├── .gitignore ├── LICENSE ├── README.md ├── TODO.txt ├── chart ├── chart.go └── chart_test.go ├── clients ├── bolt.go ├── bolt_test.go └── http.go ├── cmd └── cmd.go ├── loader ├── csv.go ├── csv_test.go ├── loader.go └── xls.go ├── main.go ├── parser └── parser.go ├── sample_data ├── GlobalTemperatures.csv └── LakeHuron.csv ├── server ├── handler.go ├── handler_test.go └── server.go ├── types ├── functions.go ├── functions_test.go ├── grouping.go ├── grouping_test.go ├── query.go ├── query_test.go ├── types.go └── types_test.go └── www ├── css ├── app.css ├── bootstrap.min.css └── font-awesome.min.css ├── fonts ├── FontAwesome.otf ├── fontawesome-webfont.eot ├── fontawesome-webfont.svg ├── fontawesome-webfont.ttf ├── fontawesome-webfont.woff ├── fontawesome-webfont.woff2 ├── glyphicons-halflings-regular.eot ├── glyphicons-halflings-regular.svg ├── glyphicons-halflings-regular.ttf ├── glyphicons-halflings-regular.woff └── glyphicons-halflings-regular.woff2 ├── html ├── base.html ├── browse.html ├── explore.html └── panel.html ├── images ├── gopher-fit.ico ├── gopher-fit.png ├── gopher-fit.xcf ├── tcx.png └── temperatures.png └── js ├── app.js ├── bootstrap.min.js └── jquery.min.js /.gitignore: -------------------------------------------------------------------------------- 1 | # Compiled Object files, Static and Dynamic libs (Shared Objects) 2 | *.o 3 | *.a 4 | *.so 5 | 6 | # Folders 7 | _obj 8 | _test 9 | 10 | # Architecture specific extensions/prefixes 11 | *.[568vq] 12 | [568vq].out 13 | 14 | *.cgo1.go 15 | *.cgo2.c 16 | _cgo_defun.c 17 | _cgo_gotypes.go 18 | _cgo_export.* 19 | 20 | _testmain.go 21 | 22 | *.exe 23 | *.test 24 | *.prof 25 | 26 | *.swp 27 | 28 | Takeout/* 29 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2016 Kevin Schoon 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | fit 2 | 3 | ### Fit 4 | 5 | Fit is a toolkit for exploring and manipulating datasets. Go has [many](https://github.com/gonum) [great](https://github.com/montanaflynn/stats) 6 | statistical libraries but is largely unrepresented in the data science world. 7 | Fit aims to be a general purpose tool for handling data [ETL](https://en.wikipedia.org/wiki/Extract,_transform,_load), 8 | analytics, and visualization. 9 | 10 | Note that this project is **largely unfinished** and unsuitable for any practical purpose. 11 | 12 | #### Components 13 | 14 | Below is a rough outline of the different commonents that currently exist in Fit. 15 | 16 | ##### Dataset 17 | 18 | All numerical values are internally represented as `float64` and are logically groupped into a 19 | `Dataset` object. Datasets use the excellent [Gonum Matrix](https://github.com/gonum/matrix) 20 | underneath which are simmilar to Numpy's multi-demensional arrays. 21 | 22 | ##### Loaders 23 | 24 | Loaders perform iterative scanning of a file path and emit an `[]string` array for each row of data 25 | until EOF is reached. Currently only `csv` and `xls` loaders exist. 26 | 27 | ##### Parsers 28 | 29 | Parsers perform pre-processing on string data prior to being loaded into a dataset. 30 | 31 | ###### TimeParser 32 | 33 | TimeParser accepts a [formatted](https://golang.org/pkg/time/#Parse) string and stores the result 34 | as Unix epoch time. 35 | 36 | #### Usage 37 | 38 | fit --help 39 | Usage: fit [OPTIONS] COMMAND [arg...] 40 | 41 | Fit is a toolkit for exploring, extracting, and transforming datasets 42 | 43 | Options: 44 | -d, --db="" Path to a BoltDB database, default: /tmp/fit.db 45 | -s, --server="" Fit API server, default: http://127.0.0.1:8000 46 | -h, --human=true output data as human readable text 47 | -j, --json=false output data in JSON format 48 | -v, --version Show the version and exit 49 | 50 | Commands: 51 | server Run the Fit web server 52 | load load a dataset into BoltDB 53 | ls list datasets loaded into the database with their columns 54 | rm Delete a dataset 55 | query Query values from one or more datasets 56 | 57 | 58 | #### Examples 59 | 60 | 61 | # Start the Fit HTTP server 62 | fit server 63 | # Load sample data 64 | fit load --name LakeHuron sample_data/LakeHuron.csv 65 | # List datasets 66 | fit ls 67 | 68 | NAME ROWS COLS COLUMNS 69 | LakeHuron 98 3 [ time LakeHuron] 70 | 71 | # Query 72 | fit query -n "LakeHuron,time,LakeHuron" 73 | 74 | [time LakeHuron] 75 | 76 | Dims(98, 2) 77 | ⎡ 1875 580.38⎤ 78 | ⎢ 1876 581.86⎥ 79 | ⎢ 1877 580.97⎥ 80 | ⎢ 1878 580.8⎥ 81 | ⎢ 1879 579.79⎥ 82 | . 83 | . 84 | . 85 | ⎢ 1968 578.52⎥ 86 | ⎢ 1969 579.74⎥ 87 | ⎢ 1970 579.31⎥ 88 | ⎢ 1971 579.89⎥ 89 | ⎣ 1972 579.96⎦ 90 | 91 | 92 | fit --json query -n "LakeHuron,time,LakeHuron" |jq . 93 | 94 | { 95 | "Name": "QueryResult", 96 | "Columns": [ 97 | "time", 98 | "LakeHuron" 99 | ], 100 | "Stats": { 101 | "Rows": 98, 102 | "Columns": 2 103 | }, 104 | "Mtx": [ 105 | 1875, 106 | 580.38 .... 107 | 108 | # Open your web browser and perform the same query: 109 | # http://localhost:8000/explore?q=LakeHuron,time&q=LakeHuron,LakeHuron 110 | 111 | 112 | #### Web Interface 113 | 114 | Fit provides a web interface for interactively exploring queries. 115 | 116 | fit 117 | 118 | 119 | 120 | -------------------------------------------------------------------------------- /TODO.txt: -------------------------------------------------------------------------------- 1 | Truncate column names 2 | Remove extension from default name 3 | Handle missing query values (no panic) 4 | Add ability to rename columns 5 | Fix errors with large datasets 6 | Support arbitrary JSON 7 | Catch matrix panic 8 | Add ability to "discover" time fields 9 | Add new chart types 10 | Add SQL backend 11 | -------------------------------------------------------------------------------- /chart/chart.go: -------------------------------------------------------------------------------- 1 | package chart 2 | 3 | import ( 4 | mtx "github.com/gonum/matrix/mat64" 5 | "github.com/gonum/plot" 6 | "github.com/gonum/plot/plotter" 7 | "github.com/gonum/plot/plotutil" 8 | "github.com/gonum/plot/vg" 9 | "github.com/gonum/plot/vg/draw" 10 | "image/color" 11 | ) 12 | 13 | type Config struct { 14 | PrimaryColor color.Color 15 | SecondaryColor color.Color 16 | XLabel string 17 | YLabel string 18 | Title string 19 | Type string 20 | Columns []string 21 | Width vg.Length 22 | Height vg.Length 23 | PlotTime bool 24 | } 25 | 26 | type Vector struct { 27 | Name string 28 | Position int 29 | } 30 | 31 | func getPlot(cfg Config) (*plot.Plot, error) { 32 | plt, err := plot.New() 33 | if err != nil { 34 | return nil, err 35 | } 36 | plt.Legend.Color = cfg.PrimaryColor 37 | plt.Legend.Top = true 38 | plt.BackgroundColor = cfg.SecondaryColor 39 | 40 | //plt.Title.Text = cfg.Title 41 | //plt.Title.Color = cfg.PrimaryColor 42 | //plt.Title.Font.Size = 0.5 * vg.Inch 43 | 44 | //plt.Y.Label.Text = cfg.YLabel 45 | plt.Y.Color = cfg.PrimaryColor 46 | plt.Y.Label.Color = cfg.PrimaryColor 47 | plt.Y.Label.Font.Size = 0.3 * vg.Inch 48 | plt.Y.Tick.Color = cfg.PrimaryColor 49 | plt.Y.Tick.Label.Font.Size = 0.2 * vg.Inch 50 | plt.Y.Tick.Label.Color = cfg.PrimaryColor 51 | 52 | //plt.X.Label.Text = cfg.XLabel 53 | plt.X.Color = cfg.PrimaryColor 54 | plt.X.Label.Color = cfg.PrimaryColor 55 | plt.X.Label.Font.Size = 0.3 * vg.Inch 56 | plt.X.Tick.Color = cfg.PrimaryColor 57 | plt.X.Tick.Label.Color = cfg.PrimaryColor 58 | plt.X.Tick.Label.Font.Size = 0.2 * vg.Inch 59 | 60 | if cfg.PlotTime { 61 | plt.X.Tick.Marker = plot.UnixTimeTicks{Format: "2006-01-02"} 62 | } 63 | return plt, nil 64 | } 65 | 66 | // GetLines returns variadic arguments for plotter.AddLines 67 | // The chart will always plot the first column vector as 68 | // the X axis and remaining columns on the Y axis. 69 | // 70 | // x,y,z 71 | // 1,1,2 72 | // 2,3,4 73 | // 3,5,6 74 | // 75 | // Line Y: 1,1 2,3 3,5 76 | // Line Z: 1,2 2,4 3,6 77 | 78 | func GetLines(mx *mtx.Dense, columns []string) []interface{} { 79 | data := make([]interface{}, 0) 80 | r, c := mx.Dims() 81 | for i := 1; i < c; i++ { 82 | xys := make(plotter.XYs, r) 83 | for j := 0; j < r; j++ { 84 | xys[j].X = mx.At(j, 0) 85 | xys[j].Y = mx.At(j, i) 86 | } 87 | data = append(data, columns[i]) 88 | data = append(data, xys) 89 | } 90 | return data 91 | } 92 | 93 | // GetValues returns an array of plotter.Values 94 | // where each entry is a column vector. 95 | func GetValues(mx *mtx.Dense) []plotter.Values { 96 | _, c := mx.Dims() 97 | values := make([]plotter.Values, c) 98 | for i := 0; i < c; i++ { 99 | values[i] = plotter.Values(mtx.Col(nil, i, mx)) 100 | } 101 | return values 102 | } 103 | 104 | func New(cfg Config, mx *mtx.Dense) (vg.CanvasWriterTo, error) { 105 | plt, err := getPlot(cfg) 106 | if err != nil { 107 | return nil, err 108 | } 109 | switch cfg.Type { 110 | case "box": 111 | values := GetValues(mx) 112 | for i, vals := range values { 113 | box, err := plotter.NewBoxPlot(vg.Points(20), float64(i), vals) 114 | if err != nil { 115 | return nil, err 116 | } 117 | box.WhiskerStyle.Color = cfg.PrimaryColor 118 | box.BoxStyle.Color = cfg.PrimaryColor 119 | box.MedianStyle.Color = cfg.PrimaryColor 120 | plt.Add(box) 121 | } 122 | default: // Default to line chart 123 | if err := plotutil.AddLines(plt, GetLines(mx, cfg.Columns)...); err != nil { 124 | return nil, err 125 | } 126 | } 127 | plt.Add(plotter.NewGrid()) 128 | canvas, err := draw.NewFormattedCanvas(cfg.Width, cfg.Height, "png") 129 | if err != nil { 130 | return nil, err 131 | } 132 | plt.Draw(draw.New(canvas)) 133 | return canvas, nil 134 | } 135 | -------------------------------------------------------------------------------- /chart/chart_test.go: -------------------------------------------------------------------------------- 1 | package chart 2 | 3 | import ( 4 | mtx "github.com/gonum/matrix/mat64" 5 | "github.com/gonum/plot/plotter" 6 | "github.com/stretchr/testify/assert" 7 | "testing" 8 | ) 9 | 10 | func TestGetLines(t *testing.T) { 11 | mx := mtx.NewDense(3, 3, []float64{ 12 | 1.0, 1.0, 2.0, 13 | 2.0, 3.0, 4.0, 14 | 3.0, 5.0, 6.0, 15 | }) 16 | data := GetLines(mx, []string{"x", "y", "z"}) 17 | assert.Len(t, data, 4) 18 | assert.IsType(t, "", data[0]) 19 | name := data[0].(string) 20 | assert.Equal(t, "y", name) 21 | assert.IsType(t, plotter.XYs{}, data[1]) 22 | xys := data[1].(plotter.XYs) 23 | assert.Equal(t, 3, xys.Len()) 24 | x, y := xys.XY(0) 25 | assert.Equal(t, 1.0, x) 26 | assert.Equal(t, 1.0, y) 27 | x, y = xys.XY(1) 28 | assert.Equal(t, 2.0, x) 29 | assert.Equal(t, 3.0, y) 30 | x, y = xys.XY(2) 31 | assert.Equal(t, 3.0, x) 32 | assert.Equal(t, 5.0, y) 33 | assert.IsType(t, "", data[2]) 34 | name = data[2].(string) 35 | assert.Equal(t, "z", name) 36 | assert.IsType(t, plotter.XYs{}, data[3]) 37 | xys = data[3].(plotter.XYs) 38 | assert.Equal(t, 3, xys.Len()) 39 | x, y = xys.XY(0) 40 | assert.Equal(t, 1.0, x) 41 | assert.Equal(t, 2.0, y) 42 | x, y = xys.XY(1) 43 | assert.Equal(t, 2.0, x) 44 | assert.Equal(t, 4.0, y) 45 | x, y = xys.XY(2) 46 | assert.Equal(t, 3.0, x) 47 | assert.Equal(t, 6.0, y) 48 | } 49 | -------------------------------------------------------------------------------- /clients/bolt.go: -------------------------------------------------------------------------------- 1 | package clients 2 | 3 | import ( 4 | "encoding/json" 5 | "github.com/boltdb/bolt" 6 | mtx "github.com/gonum/matrix/mat64" 7 | "github.com/kevinschoon/fit/types" 8 | "time" 9 | ) 10 | 11 | // BoltClient implements the types.Client 12 | // interface with a BoltDB backend. 13 | // BoltClient is the primary database 14 | // backend for Fit. It can also be used 15 | // directly from the command line. 16 | type BoltClient struct { 17 | bolt *bolt.DB 18 | } 19 | 20 | var ( 21 | dsBucket = []byte("datasets") 22 | mxBucket = []byte("matricies") 23 | ) 24 | 25 | func (c *BoltClient) Datasets() (datasets []*types.Dataset, err error) { 26 | err = c.bolt.View(func(tx *bolt.Tx) error { 27 | b := tx.Bucket(dsBucket) 28 | cursor := b.Cursor() 29 | for k, v := cursor.First(); k != nil; k, v = cursor.Next() { 30 | ds := &types.Dataset{} 31 | if err := json.Unmarshal(v, ds); err != nil { 32 | return err 33 | } 34 | datasets = append(datasets, ds) 35 | } 36 | return nil 37 | }) 38 | return datasets, err 39 | } 40 | 41 | func (c *BoltClient) Write(ds *types.Dataset) (err error) { 42 | return c.bolt.Update(func(tx *bolt.Tx) error { 43 | b := tx.Bucket(dsBucket) 44 | raw, err := json.Marshal(ds) 45 | if err != nil { 46 | return err 47 | } 48 | if err = b.Put([]byte(ds.Name), raw); err != nil { 49 | return err 50 | } 51 | if ds.Mtx == nil { // No matricies attached to this dataset 52 | return nil 53 | } 54 | b = tx.Bucket(mxBucket) 55 | raw, err = ds.Mtx.MarshalBinary() 56 | if err != nil { 57 | return err 58 | } 59 | return b.Put([]byte(ds.Name), raw) 60 | }) 61 | } 62 | 63 | func (c *BoltClient) read(name string) (ds *types.Dataset, err error) { 64 | if err = c.bolt.View(func(tx *bolt.Tx) error { 65 | b := tx.Bucket(dsBucket) 66 | raw := b.Get([]byte(name)) 67 | if raw == nil { 68 | return types.ErrNotFound 69 | } 70 | ds = &types.Dataset{} 71 | if err = json.Unmarshal(raw, ds); err != nil { 72 | return err 73 | } 74 | b = tx.Bucket(mxBucket) 75 | raw = b.Get([]byte(name)) 76 | if raw == nil { 77 | return nil // No matricies attached to the dataset 78 | } 79 | ds.Mtx = mtx.NewDense(0, 0, nil) 80 | return ds.Mtx.UnmarshalBinary(raw) 81 | }); err != nil { 82 | return nil, err 83 | } 84 | return ds, nil 85 | } 86 | 87 | func (c *BoltClient) Delete(name string) error { 88 | return c.bolt.Update(func(tx *bolt.Tx) error { 89 | b := tx.Bucket(dsBucket) 90 | if err := b.Delete([]byte(name)); err != nil { 91 | return err 92 | } 93 | b = tx.Bucket(mxBucket) 94 | return b.Delete([]byte(name)) 95 | }) 96 | } 97 | 98 | // Query finds all of the datasets contained 99 | // in Queries and returns a combined dataset 100 | // for each column in the search. The values 101 | // from each dataset are stored entirely in 102 | // memory until the query is complete. This 103 | // means that the total size of all datasets 104 | // queried cannot exceed the total system 105 | // memory. The resulting dataset columns 106 | // will be ordered in the same order they 107 | // were queried for. 108 | func (c *BoltClient) Query(query *types.Query) (*types.Dataset, error) { 109 | var ( 110 | rows int // Row count for new dataset 111 | cols int // Col count for new dataset 112 | other *types.Dataset // Dataset currently being processed 113 | ) 114 | // The new resulting dataset 115 | ds := &types.Dataset{ 116 | Name: "QueryResult", 117 | Columns: make([]string, 0), 118 | } 119 | // Empty array of Vectors where each 120 | // is a column from the queries 121 | vectors := make([]*mtx.Vector, 0) 122 | // Map of datasets already processed 123 | processed := make(map[string]*types.Dataset) 124 | // Range each dataset in the query 125 | for _, dataset := range query.Datasets { 126 | columns := dataset.Columns 127 | //columns := query.Columns(name) 128 | // Check to see if a query for this dataset 129 | // has already been executed 130 | if _, ok := processed[dataset.Name]; !ok { 131 | // Query for the other dataset 132 | other, err := c.read(dataset.Name) 133 | if err != nil { 134 | return nil, err 135 | } 136 | // Resulting matrix should have the sum of 137 | // the number of rows from each unique 138 | // dataset matrix that is queried 139 | r, _ := other.Mtx.Dims() 140 | rows += r 141 | // Add this dataset to the map 142 | // so it is not queried again 143 | processed[dataset.Name] = other 144 | } 145 | // The other dataset we are querying 146 | other = processed[dataset.Name] 147 | // If this is a wild card search 148 | // set columns to equal all available 149 | // columns in the dataset 150 | if len(columns) == 1 { 151 | if columns[0] == "*" { 152 | columns = other.Columns 153 | } 154 | } 155 | // Range each column in the query 156 | for _, name := range columns { 157 | // Get the position (index) of the column 158 | pos := other.CPos(name) 159 | // If the returned position is a negative 160 | // number the column does not exist 161 | if pos < 0 { 162 | return nil, types.ErrNotFound 163 | } 164 | // Append the column to vectors array 165 | vectors = append(vectors, other.Mtx.ColView(pos)) 166 | // Add the column name to the resulting dataset 167 | ds.Columns = append(ds.Columns, name) 168 | } 169 | } 170 | // Resulting number of columns is equal to 171 | // the amount that were queried for 172 | cols = len(vectors) 173 | // Create a new matrix zeroed Matrix 174 | ds.Mtx = mtx.NewDense(rows, cols, nil) 175 | // Fill the matrix with values from each column vector 176 | for i := 0; i < rows; i++ { 177 | for j := 0; j < cols; j++ { 178 | if vectors[j].Len() > i { 179 | ds.Mtx.Set(i, j, vectors[j].At(i, 0)) 180 | } // Zeros are left for missing data 181 | } 182 | } 183 | // Apply any other query options to the resulting dataset 184 | ds.Mtx = query.Apply(ds.Mtx) 185 | return ds, nil 186 | } 187 | 188 | func (c *BoltClient) Close() { 189 | c.bolt.Close() 190 | } 191 | 192 | func NewBoltClient(path string) (types.Client, error) { 193 | b, err := bolt.Open(path, 0600, &bolt.Options{Timeout: 1 * time.Second}) 194 | if err != nil { 195 | return nil, err 196 | } 197 | c := &BoltClient{ 198 | bolt: b, 199 | } 200 | // Initialize buckets 201 | err = c.bolt.Update(func(tx *bolt.Tx) error { 202 | if _, err = tx.CreateBucketIfNotExists(dsBucket); err != nil { 203 | return err 204 | } 205 | if _, err = tx.CreateBucketIfNotExists(mxBucket); err != nil { 206 | return err 207 | } 208 | return nil 209 | }) 210 | return types.Client(c), err 211 | } 212 | -------------------------------------------------------------------------------- /clients/bolt_test.go: -------------------------------------------------------------------------------- 1 | package clients 2 | 3 | import ( 4 | mtx "github.com/gonum/matrix/mat64" 5 | "github.com/kevinschoon/fit/types" 6 | "github.com/stretchr/testify/assert" 7 | "io/ioutil" 8 | "math/rand" 9 | "os" 10 | "testing" 11 | "time" 12 | ) 13 | 14 | var cleanup bool = false 15 | 16 | func NewTestMatrix(r, c int) *mtx.Dense { 17 | values := make([]float64, r*c) 18 | for i := range values { 19 | values[i] = rand.NormFloat64() 20 | } 21 | return mtx.NewDense(r, c, values) 22 | } 23 | 24 | func NewTestDB(t *testing.T) (types.Client, func()) { 25 | f, err := ioutil.TempFile("/tmp", "fit-test") 26 | if err != nil { 27 | t.Error(err) 28 | } 29 | db, err := NewBoltClient(f.Name()) 30 | assert.NoError(t, err) 31 | return db, func() { 32 | if cleanup { 33 | os.Remove(f.Name()) 34 | } 35 | } 36 | } 37 | 38 | func TestDatasets(t *testing.T) { 39 | db, cleanup := NewTestDB(t) 40 | defer cleanup() 41 | datasets, err := db.Datasets() 42 | assert.NoError(t, err) 43 | assert.Equal(t, 0, len(datasets)) 44 | } 45 | 46 | func TestReadWrite(t *testing.T) { 47 | d, cleanup := NewTestDB(t) 48 | defer cleanup() 49 | db := d.(*BoltClient) 50 | dsA := &types.Dataset{ 51 | Name: "TestReadWrite", 52 | Columns: []string{ 53 | "V1", "V2", "V3", "V4", 54 | "V5", "V6", "V7", "V8", 55 | }, 56 | Mtx: NewTestMatrix(128, 8), 57 | } 58 | assert.NoError(t, db.Write(dsA)) 59 | dsB, err := db.read(dsA.Name) 60 | assert.NoError(t, err) 61 | assert.True(t, mtx.Equal(dsA.Mtx, dsB.Mtx)) 62 | assert.Equal(t, 8, len(dsB.Columns)) 63 | assert.Equal(t, "TestReadWrite", dsB.Name) 64 | } 65 | 66 | func TestQuery(t *testing.T) { 67 | db, cleanup := NewTestDB(t) 68 | defer cleanup() 69 | mx1 := mtx.NewDense(2, 4, []float64{ 70 | 1.0, 1.0, 1.0, 1.0, 71 | 2.0, 2.0, 2.0, 2.0, 72 | }) 73 | mx2 := mtx.NewDense(3, 4, []float64{ 74 | 3.0, 3.0, 3.0, 3.0, 75 | 2.0, 2.0, 2.0, 2.0, 76 | 1.0, 1.0, 1.0, 1.0, 77 | }) 78 | assert.NoError(t, db.Write(&types.Dataset{ 79 | Name: "mx1", 80 | Mtx: mx1, 81 | Columns: []string{"A", "B", "C", "D"}}), 82 | ) 83 | assert.NoError(t, db.Write(&types.Dataset{ 84 | Name: "mx2", 85 | Mtx: mx2, 86 | Columns: []string{"E", "F", "G", "H"}}), 87 | ) 88 | // Ensure multiple queries for the same dataset do not 89 | // return multiple rows 90 | ds, err := db.Query(types.NewQuery([]string{"mx1,A,B,B", "mx1,B,C,D"}, "", "")) 91 | assert.NoError(t, err) 92 | mx := ds.Mtx 93 | r, c := mx.Dims() 94 | assert.Equal(t, 2, r) 95 | assert.Equal(t, 6, c) 96 | ds, err = db.Query(types.NewQuery([]string{"mx1,A,B,C", "mx2,E,F,G"}, "", "")) 97 | assert.NoError(t, err) 98 | mx = ds.Mtx 99 | r, c = mx.Dims() 100 | assert.Equal(t, 5, r) 101 | assert.Equal(t, 6, c) 102 | assert.Equal(t, 6, len(ds.Columns)) 103 | assert.Equal(t, 1.0, mx.At(0, ds.CPos("A"))) 104 | assert.Equal(t, 2.0, mx.At(1, ds.CPos("A"))) 105 | assert.Equal(t, 1.0, mx.At(0, ds.CPos("B"))) 106 | assert.Equal(t, 2.0, mx.At(1, ds.CPos("B"))) 107 | assert.Equal(t, 1.0, mx.At(0, ds.CPos("C"))) 108 | assert.Equal(t, 2.0, mx.At(1, ds.CPos("C"))) 109 | assert.Equal(t, 3.0, mx.At(0, ds.CPos("E"))) 110 | assert.Equal(t, 2.0, mx.At(1, ds.CPos("E"))) 111 | assert.Equal(t, 1.0, mx.At(2, ds.CPos("E"))) 112 | assert.Equal(t, 3.0, mx.At(0, ds.CPos("F"))) 113 | assert.Equal(t, 2.0, mx.At(1, ds.CPos("F"))) 114 | assert.Equal(t, 1.0, mx.At(2, ds.CPos("F"))) 115 | assert.Equal(t, 3.0, mx.At(0, ds.CPos("G"))) 116 | assert.Equal(t, 2.0, mx.At(1, ds.CPos("G"))) 117 | assert.Equal(t, 1.0, mx.At(2, ds.CPos("G"))) 118 | _, err = db.Query(types.NewQuery([]string{"mx3"}, "", "")) 119 | assert.Error(t, err, "not found") 120 | _, err = db.Query(types.NewQuery([]string{"mx1,H"}, "", "")) 121 | assert.Error(t, err, "not found") 122 | // Wildcard query 123 | ds, err = db.Query(types.NewQuery([]string{"mx1,*"}, "", "")) 124 | assert.NoError(t, err) 125 | r, c = ds.Mtx.Dims() 126 | assert.Equal(t, 2, r) 127 | assert.Equal(t, 4, c) 128 | } 129 | 130 | func init() { 131 | rand.Seed(time.Now().Unix()) 132 | } 133 | -------------------------------------------------------------------------------- /clients/http.go: -------------------------------------------------------------------------------- 1 | package clients 2 | 3 | import ( 4 | "bytes" 5 | "encoding/json" 6 | "fmt" 7 | "github.com/kevinschoon/fit/types" 8 | "io" 9 | "io/ioutil" 10 | "log" 11 | "net/http" 12 | "net/url" 13 | "time" 14 | ) 15 | 16 | const timeout time.Duration = 10 * time.Second 17 | 18 | // HTTPClient implements the types.Client 19 | // interface over HTTP 20 | type HTTPClient struct { 21 | baseURL *url.URL 22 | client *http.Client 23 | } 24 | 25 | func (c *HTTPClient) url() *url.URL { 26 | return &url.URL{ 27 | Scheme: c.baseURL.Scheme, 28 | Host: c.baseURL.Host, 29 | Path: "/1/dataset", 30 | } 31 | } 32 | 33 | func (c *HTTPClient) do(req *http.Request) ([]byte, error) { 34 | res, err := c.client.Do(req) 35 | if err != nil { 36 | return nil, err 37 | } 38 | data, err := ioutil.ReadAll(res.Body) 39 | defer res.Body.Close() 40 | if err != nil { 41 | return nil, err 42 | } 43 | if res.StatusCode != http.StatusOK { 44 | log.Printf("API Error: %d - %s\n", res.StatusCode, data) 45 | switch res.StatusCode { 46 | case 404: 47 | return nil, types.ErrNotFound 48 | default: 49 | return nil, types.ErrAPI 50 | } 51 | } 52 | return data, nil 53 | } 54 | 55 | func (c *HTTPClient) Datasets() (datasets []*types.Dataset, err error) { 56 | raw, err := c.do(&http.Request{ 57 | URL: c.url(), 58 | Method: "GET", 59 | }) 60 | if err != nil { 61 | return nil, err 62 | } 63 | err = json.Unmarshal(raw, &datasets) 64 | return datasets, err 65 | } 66 | 67 | func (c *HTTPClient) Write(ds *types.Dataset) (err error) { 68 | ds.WithValues = true 69 | raw, err := json.Marshal(ds) 70 | if err != nil { 71 | return err 72 | } 73 | req, err := http.NewRequest("POST", c.url().String(), io.Reader(bytes.NewReader(raw))) 74 | if err != nil { 75 | return err 76 | } 77 | _, err = c.do(req) 78 | return err 79 | } 80 | 81 | func (c *HTTPClient) Delete(name string) (err error) { 82 | u := c.url() 83 | u.RawQuery = fmt.Sprintf("name=%s", name) 84 | _, err = c.do(&http.Request{ 85 | URL: u, 86 | Method: "DELETE", 87 | }) 88 | return err 89 | } 90 | 91 | func (c *HTTPClient) Query(query *types.Query) (ds *types.Dataset, err error) { 92 | u := c.url() 93 | u.RawQuery = query.String() 94 | raw, err := c.do(&http.Request{ 95 | URL: u, 96 | Method: "GET", 97 | }) 98 | if err != nil { 99 | return nil, err 100 | } 101 | ds = &types.Dataset{ 102 | WithValues: true, 103 | } 104 | err = json.Unmarshal(raw, ds) 105 | return ds, err 106 | } 107 | 108 | func NewHTTPClient(endpoint string) (types.Client, error) { 109 | u, err := url.Parse(endpoint) 110 | if err != nil { 111 | return nil, err 112 | } 113 | c := &HTTPClient{ 114 | baseURL: u, 115 | client: &http.Client{ 116 | Timeout: timeout, 117 | }, 118 | } 119 | return types.Client(c), nil 120 | } 121 | -------------------------------------------------------------------------------- /cmd/cmd.go: -------------------------------------------------------------------------------- 1 | package cmd 2 | 3 | import ( 4 | "encoding/json" 5 | "fmt" 6 | mtx "github.com/gonum/matrix/mat64" 7 | "github.com/gosuri/uitable" 8 | "github.com/jawher/mow.cli" 9 | 10 | "github.com/kevinschoon/fit/clients" 11 | "github.com/kevinschoon/fit/loader" 12 | "github.com/kevinschoon/fit/parser" 13 | "github.com/kevinschoon/fit/server" 14 | "github.com/kevinschoon/fit/types" 15 | "os" 16 | ) 17 | 18 | const FitVersion string = "0.0.1" 19 | 20 | var ( 21 | app = cli.App("fit", "Fit is a toolkit for exploring, extracting, and transforming datasets") 22 | 23 | dbPath = app.StringOpt("d db", "", "Path to a BoltDB database, default: /tmp/fit.db") 24 | apiURL = app.StringOpt("s server", "", "Fit API server, default: http://127.0.0.1:8000") 25 | asHuman = app.BoolOpt("h human", true, "output data as human readable text") 26 | asJSON = app.BoolOpt("j json", false, "output data in JSON format") 27 | ) 28 | 29 | func FailOnErr(err error) { 30 | if err != nil { 31 | fmt.Println("ERROR:", err.Error()) 32 | os.Exit(1) 33 | } 34 | } 35 | 36 | func GetClient(pref string) types.Client { 37 | switch { 38 | case *dbPath != "": 39 | client, err := clients.NewBoltClient(*dbPath) 40 | FailOnErr(err) 41 | return client 42 | case *apiURL != "": 43 | client, err := clients.NewHTTPClient(*apiURL) 44 | FailOnErr(err) 45 | return client 46 | } 47 | if pref == "db" { 48 | client, err := clients.NewBoltClient("/tmp/fit.db") 49 | FailOnErr(err) 50 | return client 51 | } 52 | client, err := clients.NewHTTPClient("http://127.0.0.1:8000") 53 | FailOnErr(err) 54 | return client 55 | } 56 | 57 | func Run() { 58 | app.Version("v version", FitVersion) 59 | 60 | app.Command("server", "Run the Fit web server", func(cmd *cli.Cmd) { 61 | var ( 62 | pattern = cmd.StringOpt("pattern", "127.0.0.1:8000", "IP and port pattern to listen on") 63 | static = cmd.StringOpt("static", "./www", "Path to static assets") 64 | demo = cmd.BoolOpt("demo", false, "Run in Demo Mode") 65 | ) 66 | cmd.Action = func() { 67 | server.RunServer(GetClient("db"), *pattern, *static, FitVersion, *demo) 68 | } 69 | }) 70 | 71 | app.Command("load", "load a dataset into BoltDB", func(cmd *cli.Cmd) { 72 | cmd.Spec = "[[-n] [-s]][-p...][-c...] PATH" 73 | var ( 74 | name = cmd.StringOpt("n name", "", "name of this dataset") 75 | path = cmd.StringArg("PATH", "", "File path") 76 | parserArgs = cmd.StringsOpt("p parser", []string{}, "parsers to apply") 77 | sheet = cmd.StringOpt("s sheet", "", "name of the sheet to load with XLS file") 78 | columns = cmd.StringsOpt("c column", []string{}, "column names") 79 | ) 80 | cmd.Action = func() { 81 | parsers, err := parser.ParsersFromArgs(*parserArgs) 82 | FailOnErr(err) 83 | opts := loader.Options{ 84 | Name: *name, 85 | Path: *path, 86 | Parsers: parsers, 87 | Columns: *columns, 88 | Sheet: *sheet, 89 | } 90 | ds, err := loader.ReadPath(opts) 91 | FailOnErr(err) 92 | FailOnErr(GetClient("").Write(ds)) 93 | } 94 | }) 95 | 96 | app.Command("ls", "list datasets loaded into the database with their columns", func(cmd *cli.Cmd) { 97 | cmd.Action = func() { 98 | datasets, err := GetClient("").Datasets() 99 | FailOnErr(err) 100 | switch { 101 | case *asJSON: 102 | raw, err := json.Marshal(datasets) 103 | FailOnErr(err) 104 | fmt.Println(string(raw)) 105 | default: 106 | tbl := uitable.New() 107 | tbl.AddRow("NAME", "ROWS", "COLS", "COLUMNS") 108 | for _, dataset := range datasets { 109 | tbl.AddRow(dataset.Name, fmt.Sprintf("%d", dataset.Stats.Rows), fmt.Sprintf("%d", dataset.Stats.Columns), dataset.Columns) 110 | } 111 | fmt.Println(tbl) 112 | } 113 | } 114 | }) 115 | 116 | app.Command("rm", "Delete a dataset", func(cmd *cli.Cmd) { 117 | var name = cmd.StringArg("NAME", "", "Name of the dataset to delete") 118 | cmd.Action = func() { 119 | if *name == "" { 120 | cmd.PrintLongHelp() 121 | os.Exit(1) 122 | } 123 | FailOnErr(GetClient("").Delete(*name)) 124 | } 125 | }) 126 | 127 | app.Command("query", "Query values from one or more datasets", func(cmd *cli.Cmd) { 128 | var ( 129 | queryArgs = cmd.StringsArg("QUERY", []string{}, "Query parameters") 130 | lines = cmd.IntOpt("n lines", 10, "number of rows to output") 131 | grouping = cmd.StringOpt("g grouping", "", "grouping to apply to the resulting matrix") 132 | function = cmd.StringOpt("f function", "avg", "function to apply when grouping") 133 | ) 134 | cmd.LongDesc = `Query values from one or more stored datasets. Values from different 135 | datasets can be joined together by specifying multiple query parameters. 136 | 137 | Example: 138 | 139 | fit query -n 10 -g Duration,0,1m -f avg "Dataset1,fuu" "Dataset2,bar,baz" 140 | ` 141 | cmd.Spec = "[OPTIONS] QUERY..." 142 | cmd.Action = func() { 143 | if len(*queryArgs) == 0 { 144 | cmd.PrintLongHelp() 145 | os.Exit(1) 146 | } 147 | ds, err := GetClient("").Query(types.NewQuery(*queryArgs, *function, *grouping)) 148 | FailOnErr(err) 149 | if ds.Len() > 0 { 150 | switch { 151 | case *asJSON: 152 | ds.WithValues = true 153 | raw, err := json.Marshal(ds) 154 | FailOnErr(err) 155 | fmt.Println(string(raw)) 156 | default: 157 | fmt.Printf("\n%s\n", ds.Columns) 158 | if *lines > 0 { 159 | fmt.Printf("\n%v\n\n", mtx.Formatted(ds.Mtx, mtx.Prefix(" "), mtx.Excerpt(*lines))) 160 | } else { 161 | fmt.Printf("\n%v\n\n", mtx.Formatted(ds.Mtx, mtx.Prefix(" "))) 162 | } 163 | } 164 | } 165 | } 166 | }) 167 | FailOnErr(app.Run(os.Args)) 168 | } 169 | -------------------------------------------------------------------------------- /loader/csv.go: -------------------------------------------------------------------------------- 1 | package loader 2 | 3 | import ( 4 | "encoding/csv" 5 | "io" 6 | ) 7 | 8 | type CSV struct { 9 | Columns []string 10 | reader *csv.Reader 11 | rows [][]string 12 | index int 13 | } 14 | 15 | func (c *CSV) Row() ([]string, error) { 16 | if c.index == len(c.rows) { 17 | return nil, io.EOF 18 | } 19 | row := c.rows[c.index] 20 | c.index++ 21 | return row, nil 22 | } 23 | 24 | func (c CSV) Dims() (int, int) { 25 | return len(c.rows), len(c.Columns) 26 | } 27 | 28 | func NewCSV(reader io.Reader) (*CSV, error) { 29 | c := &CSV{ 30 | reader: csv.NewReader(reader), 31 | } 32 | // Read the first record in the CSV to load column names 33 | row, err := c.reader.Read() 34 | if err != nil { 35 | return c, err 36 | } 37 | c.Columns = make([]string, len(row)) 38 | for i, name := range row { 39 | c.Columns[i] = name 40 | } 41 | // Load the entire CSV into memory so 42 | // we can get it's demensions 43 | for { 44 | row, err := c.reader.Read() 45 | if err == io.EOF { 46 | break 47 | } 48 | if err != nil { 49 | return nil, err 50 | } 51 | c.rows = append(c.rows, row) 52 | } 53 | return c, nil 54 | } 55 | -------------------------------------------------------------------------------- /loader/csv_test.go: -------------------------------------------------------------------------------- 1 | package loader 2 | 3 | import ( 4 | "github.com/stretchr/testify/assert" 5 | "io" 6 | "strings" 7 | "testing" 8 | ) 9 | 10 | var Simple string = ` 11 | "","time","LakeHuron" 12 | "1",1875,580.38 13 | "2",1876,581.86 14 | "3",1877,580.97 15 | "4",1878,580.8 16 | "5",1879,579.79 17 | ` 18 | 19 | func TestCSVLoader(t *testing.T) { 20 | c, err := NewCSV(strings.NewReader(Simple)) 21 | assert.NoError(t, err) 22 | assert.Len(t, c.Columns, 3) 23 | rows, cols := c.Dims() 24 | assert.Equal(t, 5, rows) 25 | assert.Equal(t, 3, cols) 26 | values, err := c.Row() 27 | assert.NoError(t, err) 28 | assert.Len(t, values, 3) 29 | assert.Equal(t, "1", values[0]) 30 | assert.Equal(t, "1875", values[1]) 31 | assert.Equal(t, "580.38", values[2]) 32 | values, err = c.Row() 33 | assert.NoError(t, err) 34 | assert.Len(t, values, 3) 35 | assert.Equal(t, "2", values[0]) 36 | assert.Equal(t, "1876", values[1]) 37 | assert.Equal(t, "581.86", values[2]) 38 | values, err = c.Row() 39 | assert.NoError(t, err) 40 | assert.Equal(t, "3", values[0]) 41 | assert.Equal(t, "1877", values[1]) 42 | assert.Equal(t, "580.97", values[2]) 43 | values, err = c.Row() 44 | assert.NoError(t, err) 45 | assert.Equal(t, "4", values[0]) 46 | assert.Equal(t, "1878", values[1]) 47 | assert.Equal(t, "580.8", values[2]) 48 | values, err = c.Row() 49 | assert.NoError(t, err) 50 | assert.Equal(t, "5", values[0]) 51 | assert.Equal(t, "1879", values[1]) 52 | assert.Equal(t, "579.79", values[2]) 53 | _, err = c.Row() 54 | assert.Error(t, err) 55 | assert.Equal(t, err, io.EOF) 56 | } 57 | -------------------------------------------------------------------------------- /loader/loader.go: -------------------------------------------------------------------------------- 1 | package loader 2 | 3 | import ( 4 | "errors" 5 | "fmt" 6 | mtx "github.com/gonum/matrix/mat64" 7 | "github.com/kevinschoon/fit/parser" 8 | "github.com/kevinschoon/fit/types" 9 | "io" 10 | "math" 11 | "os" 12 | "strconv" 13 | "strings" 14 | ) 15 | 16 | var ErrUnequalValues = errors.New("unequal value size") 17 | 18 | type Rower interface { 19 | Row() ([]string, error) 20 | Dims() (int, int) 21 | } 22 | 23 | type Options struct { 24 | Name string 25 | Path string 26 | Enc string 27 | Columns []string 28 | Sheet string // Sheet name (XLS) 29 | Size int64 // File Size (XLS) 30 | Parsers map[int]parser.Parser 31 | } 32 | 33 | // Rower returns a Rower based on the configured options 34 | func (opts *Options) Rower(fp *os.File) (Rower, error) { 35 | var split []string 36 | if opts.Name == "" { 37 | split = strings.Split(opts.Path, "/") 38 | opts.Name = split[len(split)-1] 39 | if strings.Contains(opts.Name, ".") { 40 | opts.Name = strings.Split(opts.Name, ".")[0] 41 | } 42 | } 43 | if opts.Enc == "" { 44 | split = strings.Split(opts.Path, "/") 45 | split = strings.Split(split[len(split)-1], ".") 46 | opts.Enc = split[len(split)-1] 47 | } 48 | switch { 49 | case opts.Enc == "csv": 50 | csv, err := NewCSV(fp) 51 | if err != nil { 52 | return nil, err 53 | } 54 | if len(opts.Columns) == 0 { 55 | opts.Columns = csv.Columns 56 | } 57 | return csv, nil 58 | case opts.Enc == "xls" || opts.Enc == "xlsx": 59 | xls, err := NewXLS(fp, *opts) 60 | if err != nil { 61 | return nil, err 62 | } 63 | if len(opts.Columns) == 0 { 64 | return nil, fmt.Errorf("Specify at least one column") 65 | } 66 | return xls, nil 67 | } 68 | panic(fmt.Sprintf("unknown encoding: %d", opts.Enc)) 69 | } 70 | 71 | func Matrix(rower Rower, parsers map[int]parser.Parser) (*mtx.Dense, error) { 72 | r, c := rower.Dims() 73 | mx := mtx.NewDense(r, c, nil) 74 | for j := 0; j < r; j++ { 75 | strs, err := rower.Row() 76 | if err == io.EOF { 77 | break 78 | } 79 | if err != nil { 80 | return nil, err 81 | } 82 | row := make([]float64, c) 83 | for i, str := range strs { 84 | if parser, ok := parsers[i]; ok { 85 | if value, err := parser.Parse(str); err == nil { 86 | row[i] = value 87 | continue 88 | } 89 | } 90 | if value, err := strconv.ParseFloat(str, 64); err == nil { 91 | row[i] = value 92 | continue 93 | } 94 | row[i] = math.NaN() 95 | } 96 | mx.SetRow(j, row) 97 | } 98 | return mx, nil 99 | } 100 | 101 | func ReadPath(opts Options) (*types.Dataset, error) { 102 | var ( 103 | rower Rower 104 | mx *mtx.Dense 105 | ) 106 | fp, err := os.Open(opts.Path) 107 | if err != nil { 108 | return nil, err 109 | } 110 | stats, err := fp.Stat() 111 | if err != nil { 112 | return nil, err 113 | } 114 | defer fp.Close() 115 | opts.Size = stats.Size() 116 | rower, err = opts.Rower(fp) 117 | if err != nil { 118 | return nil, err 119 | } 120 | mx, err = Matrix(rower, opts.Parsers) 121 | if err != nil { 122 | return nil, err 123 | } 124 | return &types.Dataset{ 125 | Name: opts.Name, 126 | Columns: opts.Columns, 127 | Mtx: mx, 128 | }, nil 129 | } 130 | -------------------------------------------------------------------------------- /loader/xls.go: -------------------------------------------------------------------------------- 1 | package loader 2 | 3 | import ( 4 | "errors" 5 | "github.com/tealeg/xlsx" 6 | "io" 7 | ) 8 | 9 | var InvalidXLS = errors.New("Invalid XLS") 10 | 11 | type XLS struct { 12 | file *xlsx.File 13 | sheet *xlsx.Sheet 14 | index int 15 | columns []string 16 | } 17 | 18 | func (x *XLS) Row() ([]string, error) { 19 | if x.index > x.sheet.MaxRow { 20 | return nil, io.EOF 21 | } 22 | values := make([]string, len(x.columns)) 23 | for i := 0; i < len(values); i++ { 24 | if str, err := x.sheet.Cell(x.index, i).String(); err == nil { 25 | values[i] = str 26 | } 27 | } 28 | x.index++ 29 | return values, nil 30 | } 31 | 32 | func (x XLS) Dims() (int, int) { 33 | return x.sheet.MaxRow, len(x.columns) 34 | } 35 | 36 | func NewXLS(reader io.ReaderAt, opts Options) (*XLS, error) { 37 | f, err := xlsx.OpenReaderAt(reader, opts.Size) 38 | if err != nil { 39 | return nil, err 40 | } 41 | xls := &XLS{ 42 | columns: opts.Columns, 43 | } 44 | if opts.Sheet != "" { 45 | if sheet, ok := f.Sheet[opts.Sheet]; ok { 46 | xls.sheet = sheet 47 | } else { 48 | return nil, InvalidXLS 49 | } 50 | } else { 51 | if len(f.Sheets) == 0 { 52 | return nil, InvalidXLS 53 | } 54 | xls.sheet = f.Sheets[0] 55 | } 56 | return xls, nil 57 | } 58 | -------------------------------------------------------------------------------- /main.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "github.com/kevinschoon/fit/cmd" 5 | ) 6 | 7 | func main() { 8 | cmd.Run() 9 | } 10 | -------------------------------------------------------------------------------- /parser/parser.go: -------------------------------------------------------------------------------- 1 | package parser 2 | 3 | import ( 4 | "fmt" 5 | "strconv" 6 | "strings" 7 | "time" 8 | ) 9 | 10 | type Parser interface { 11 | Parse(string) (float64, error) 12 | } 13 | 14 | // Parsers loads Parser types from the array of strings 15 | // Example: 16 | // 1,Time,2006-01-02 17 | // ^-^----^----index(int),name(string),format(string) 18 | func ParsersFromArgs(args []string) (map[int]Parser, error) { 19 | parsers := make(map[int]Parser) 20 | for _, arg := range args { 21 | split := strings.Split(arg, ",") 22 | if len(split) < 3 { 23 | return nil, fmt.Errorf("Bad parser opts: %s", arg) 24 | } 25 | index, err := strconv.ParseInt(split[0], 0, 64) 26 | if err != nil { 27 | return nil, fmt.Errorf("Bad parser opts: %s", arg) 28 | } 29 | switch split[1] { 30 | case "Time": 31 | if len(split) != 3 { 32 | return nil, fmt.Errorf("Bad parser opts: %s", arg) 33 | } 34 | parsers[int(index)] = TimeParser{Format: split[2]} 35 | default: 36 | return nil, fmt.Errorf("Unknown parser: %s", split[1]) 37 | } 38 | } 39 | return parsers, nil 40 | } 41 | 42 | type TimeParser struct { 43 | Format string 44 | } 45 | 46 | func (t TimeParser) Parse(v string) (float64, error) { 47 | parsed, err := time.Parse(t.Format, v) 48 | if err != nil { 49 | return 0.0, err 50 | } 51 | return float64(parsed.Unix()), nil 52 | } 53 | -------------------------------------------------------------------------------- /sample_data/LakeHuron.csv: -------------------------------------------------------------------------------- 1 | "","time","LakeHuron" 2 | "1",1875,580.38 3 | "2",1876,581.86 4 | "3",1877,580.97 5 | "4",1878,580.8 6 | "5",1879,579.79 7 | "6",1880,580.39 8 | "7",1881,580.42 9 | "8",1882,580.82 10 | "9",1883,581.4 11 | "10",1884,581.32 12 | "11",1885,581.44 13 | "12",1886,581.68 14 | "13",1887,581.17 15 | "14",1888,580.53 16 | "15",1889,580.01 17 | "16",1890,579.91 18 | "17",1891,579.14 19 | "18",1892,579.16 20 | "19",1893,579.55 21 | "20",1894,579.67 22 | "21",1895,578.44 23 | "22",1896,578.24 24 | "23",1897,579.1 25 | "24",1898,579.09 26 | "25",1899,579.35 27 | "26",1900,578.82 28 | "27",1901,579.32 29 | "28",1902,579.01 30 | "29",1903,579 31 | "30",1904,579.8 32 | "31",1905,579.83 33 | "32",1906,579.72 34 | "33",1907,579.89 35 | "34",1908,580.01 36 | "35",1909,579.37 37 | "36",1910,578.69 38 | "37",1911,578.19 39 | "38",1912,578.67 40 | "39",1913,579.55 41 | "40",1914,578.92 42 | "41",1915,578.09 43 | "42",1916,579.37 44 | "43",1917,580.13 45 | "44",1918,580.14 46 | "45",1919,579.51 47 | "46",1920,579.24 48 | "47",1921,578.66 49 | "48",1922,578.86 50 | "49",1923,578.05 51 | "50",1924,577.79 52 | "51",1925,576.75 53 | "52",1926,576.75 54 | "53",1927,577.82 55 | "54",1928,578.64 56 | "55",1929,580.58 57 | "56",1930,579.48 58 | "57",1931,577.38 59 | "58",1932,576.9 60 | "59",1933,576.94 61 | "60",1934,576.24 62 | "61",1935,576.84 63 | "62",1936,576.85 64 | "63",1937,576.9 65 | "64",1938,577.79 66 | "65",1939,578.18 67 | "66",1940,577.51 68 | "67",1941,577.23 69 | "68",1942,578.42 70 | "69",1943,579.61 71 | "70",1944,579.05 72 | "71",1945,579.26 73 | "72",1946,579.22 74 | "73",1947,579.38 75 | "74",1948,579.1 76 | "75",1949,577.95 77 | "76",1950,578.12 78 | "77",1951,579.75 79 | "78",1952,580.85 80 | "79",1953,580.41 81 | "80",1954,579.96 82 | "81",1955,579.61 83 | "82",1956,578.76 84 | "83",1957,578.18 85 | "84",1958,577.21 86 | "85",1959,577.13 87 | "86",1960,579.1 88 | "87",1961,578.25 89 | "88",1962,577.91 90 | "89",1963,576.89 91 | "90",1964,575.96 92 | "91",1965,576.8 93 | "92",1966,577.68 94 | "93",1967,578.38 95 | "94",1968,578.52 96 | "95",1969,579.74 97 | "96",1970,579.31 98 | "97",1971,579.89 99 | "98",1972,579.96 100 | -------------------------------------------------------------------------------- /server/handler.go: -------------------------------------------------------------------------------- 1 | package server 2 | 3 | import ( 4 | "encoding/json" 5 | "fmt" 6 | "github.com/gonum/plot/vg" 7 | "github.com/kevinschoon/fit/chart" 8 | "github.com/kevinschoon/fit/types" 9 | "image/color" 10 | "net/http" 11 | "net/url" 12 | "strconv" 13 | "text/template" 14 | ) 15 | 16 | type Response struct { 17 | Title string 18 | Explore bool // Display Data Explorer 19 | Browse bool // Display Datasets Listing 20 | Keys []string // Series Keys to Display 21 | ChartURL string // URL for rendering the chart 22 | Datasets []*types.Dataset 23 | Dataset *types.Dataset 24 | Query url.Values 25 | DemoMode bool 26 | Version string 27 | } 28 | 29 | type Handler struct { 30 | db types.Client 31 | version string 32 | templates []string 33 | defaults Response 34 | } 35 | 36 | func (handler Handler) response() *Response { 37 | return &Response{ 38 | DemoMode: handler.defaults.DemoMode, 39 | Version: handler.defaults.Version, 40 | } 41 | } 42 | 43 | func (handler Handler) Chart(w http.ResponseWriter, r *http.Request) error { 44 | ds, err := handler.db.Query(types.NewQueryQS(r.URL)) 45 | if err != nil { 46 | return err 47 | } 48 | cfg := chart.Config{ 49 | Title: ds.Name, 50 | PrimaryColor: color.White, 51 | SecondaryColor: color.Black, 52 | Width: 18 * vg.Inch, 53 | Height: 5 * vg.Inch, 54 | Type: r.URL.Query().Get("type"), 55 | Columns: types.NewQueryQS(r.URL).Columns(), 56 | } 57 | if w, err := strconv.ParseInt(r.URL.Query().Get("width"), 0, 64); err == nil { 58 | if w < 20 { // Prevent potentially horrible DOS 59 | cfg.Width = vg.Length(w) * vg.Inch 60 | } 61 | } 62 | if h, err := strconv.ParseInt(r.URL.Query().Get("height"), 0, 64); err == nil { 63 | if h < 20 { 64 | cfg.Height = vg.Length(h) * vg.Inch 65 | } 66 | } 67 | canvas, err := chart.New(cfg, ds.Mtx) 68 | if err != nil { 69 | return err 70 | } 71 | _, err = canvas.WriteTo(w) 72 | return err 73 | } 74 | 75 | func (handler Handler) DatasetAPI(w http.ResponseWriter, r *http.Request) error { 76 | switch r.Method { 77 | case "GET": 78 | query := types.NewQueryQS(r.URL) 79 | if query.Len() > 0 { // If URL contains a query return the query result 80 | ds, err := handler.db.Query(query) 81 | if err != nil { 82 | return err 83 | } 84 | ds.WithValues = true // Encode values in the dataset response 85 | if err := json.NewEncoder(w).Encode(ds); err != nil { 86 | return err 87 | } 88 | } else { // Otherwise return an array of all datasets 89 | datasets, err := handler.db.Datasets() 90 | if err != nil { 91 | return err 92 | } 93 | if err = json.NewEncoder(w).Encode(datasets); err != nil { 94 | return err 95 | } 96 | } 97 | case "POST": 98 | ds := &types.Dataset{WithValues: true} 99 | if err := json.NewDecoder(r.Body).Decode(ds); err != nil { 100 | return err 101 | } 102 | if err := handler.db.Write(ds); err != nil { 103 | return err 104 | } 105 | case "DELETE": 106 | if name := r.URL.Query().Get("name"); name != "" { 107 | if err := handler.db.Delete(name); err != nil { 108 | return err 109 | } 110 | } else { 111 | return fmt.Errorf("specify name") 112 | } 113 | } 114 | return nil 115 | } 116 | 117 | func (handler Handler) Home(w http.ResponseWriter, r *http.Request) error { 118 | tmpl, err := template.ParseFiles(handler.templates...) 119 | if err != nil { 120 | return err 121 | } 122 | response := handler.response() 123 | datasets, err := handler.db.Datasets() 124 | if err != nil { 125 | return err 126 | } 127 | response.Datasets = datasets 128 | response.Query = r.URL.Query() 129 | response.Title = "Browse" 130 | response.Browse = true 131 | return tmpl.Execute(w, response) 132 | } 133 | 134 | func (handler Handler) Explore(w http.ResponseWriter, r *http.Request) error { 135 | tmpl, err := template.ParseFiles(handler.templates...) 136 | if err != nil { 137 | return err 138 | } 139 | response := handler.response() 140 | datasets, err := handler.db.Datasets() 141 | if err != nil { 142 | return err 143 | } 144 | response.Datasets = datasets 145 | response.Query = r.URL.Query() 146 | response.Explore = true 147 | chartURL := &url.URL{ 148 | Scheme: r.URL.Scheme, 149 | Host: r.URL.Host, 150 | Path: "/chart", 151 | RawQuery: r.URL.Query().Encode(), 152 | } 153 | response.ChartURL = chartURL.String() 154 | ds, err := handler.db.Query(types.NewQueryQS(r.URL)) 155 | if err != nil { 156 | return err 157 | } 158 | response.Dataset = ds 159 | return tmpl.Execute(w, response) 160 | } 161 | -------------------------------------------------------------------------------- /server/handler_test.go: -------------------------------------------------------------------------------- 1 | package server 2 | 3 | import ( 4 | "bytes" 5 | "encoding/json" 6 | "github.com/kevinschoon/fit/clients" 7 | "github.com/kevinschoon/fit/types" 8 | "github.com/stretchr/testify/assert" 9 | "io" 10 | "io/ioutil" 11 | "net/http" 12 | "net/url" 13 | "os" 14 | "testing" 15 | ) 16 | 17 | var cleanup bool = false 18 | 19 | var ( 20 | datasetRaw []byte = []byte(`{"Name": "TestDataset", "Columns": ["V1", "V2"]}`) 21 | valuesRaw []byte = []byte(`[1.0, 1.0, 2.0, 2.0, 3.0, 3.0, 4.0, 4.0, 5.0, 5.0]`) 22 | ) 23 | 24 | type MockWriter struct { 25 | fp *os.File 26 | } 27 | 28 | func (writer MockWriter) Header() http.Header { return http.Header{} } 29 | 30 | func (writer MockWriter) Write(data []byte) (int, error) { 31 | return writer.fp.Write(data) 32 | } 33 | func (writer MockWriter) WriteHeader(int) {} 34 | 35 | type MockReader struct { 36 | *bytes.Reader 37 | } 38 | 39 | func (reader MockReader) Close() error { return nil } 40 | 41 | func NewTestDB(t *testing.T) (types.Client, func()) { 42 | f, err := ioutil.TempFile("/tmp", "fit-test-") 43 | assert.NoError(t, err) 44 | db, err := clients.NewBoltClient(f.Name()) 45 | assert.NoError(t, err) 46 | return db, func() { 47 | if cleanup { 48 | os.Remove(f.Name()) 49 | } 50 | } 51 | } 52 | 53 | func NewMockWriter(t *testing.T) (MockWriter, func()) { 54 | fp, err := ioutil.TempFile("/tmp", "fit-test-writer-") 55 | assert.NoError(t, err) 56 | return MockWriter{fp: fp}, func() { 57 | fp.Close() 58 | if cleanup { 59 | os.Remove(fp.Name()) 60 | } 61 | } 62 | } 63 | 64 | func TestDatasetAPI(t *testing.T) { 65 | db, cleanup := NewTestDB(t) 66 | defer cleanup() 67 | handler := Handler{db: db} 68 | reader := MockReader{bytes.NewReader(datasetRaw)} 69 | assert.NoError(t, handler.DatasetAPI(MockWriter{fp: nil}, &http.Request{ 70 | Method: "POST", 71 | Body: io.ReadCloser(reader), 72 | })) 73 | writer, cleanup := NewMockWriter(t) 74 | defer cleanup() 75 | assert.NoError(t, handler.DatasetAPI(writer, &http.Request{ 76 | URL: &url.URL{}, 77 | Method: "GET", 78 | })) 79 | raw, err := ioutil.ReadFile(writer.fp.Name()) 80 | assert.NoError(t, err) 81 | ds := []*types.Dataset{} 82 | assert.NoError(t, json.Unmarshal(raw, &ds)) 83 | assert.Len(t, ds, 1) 84 | assert.Equal(t, "V1", ds[0].Columns[0]) 85 | assert.Equal(t, "V2", ds[0].Columns[1]) 86 | assert.Equal(t, 0, ds[0].Stats.Rows) 87 | assert.Equal(t, 0, ds[0].Stats.Columns) 88 | assert.NoError(t, handler.DatasetAPI(MockWriter{fp: nil}, &http.Request{ 89 | Method: "DELETE", 90 | URL: &url.URL{ 91 | RawQuery: "name=TestDataset", 92 | }, 93 | })) 94 | } 95 | -------------------------------------------------------------------------------- /server/server.go: -------------------------------------------------------------------------------- 1 | package server 2 | 3 | import ( 4 | "fmt" 5 | "io/ioutil" 6 | "log" 7 | "net/http" 8 | "os" 9 | "text/template" 10 | 11 | "github.com/gorilla/handlers" 12 | "github.com/gorilla/mux" 13 | "github.com/kevinschoon/fit/types" 14 | ) 15 | 16 | type ErrorHandler func(http.ResponseWriter, *http.Request) error 17 | 18 | func (fn ErrorHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) { 19 | HandleError(fn(w, r), w, r) 20 | } 21 | 22 | func HandleError(err error, w http.ResponseWriter, r *http.Request) { 23 | if err != nil { 24 | fmt.Println("ERROR: ", err.Error()) 25 | switch err.(type) { 26 | case template.ExecError: 27 | default: 28 | switch err { 29 | case types.ErrNotFound: 30 | http.NotFound(w, r) 31 | default: 32 | http.Error(w, err.Error(), http.StatusInternalServerError) 33 | } 34 | } 35 | } 36 | } 37 | 38 | type StaticHandler struct { 39 | Path string // Path to static assets directory 40 | Allowed []string // Array of allowed directories 41 | } 42 | 43 | func (handler StaticHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) { 44 | for _, directory := range handler.Allowed { 45 | if mux.Vars(r)["directory"] == directory { 46 | if files, err := ioutil.ReadDir(fmt.Sprintf("%s/%s", handler.Path, directory)); err == nil { 47 | for _, file := range files { 48 | if mux.Vars(r)["file"] == file.Name() && file.Mode().IsRegular() { 49 | http.ServeFile(w, r, fmt.Sprintf("%s/%s/%s", handler.Path, directory, file.Name())) 50 | return 51 | } 52 | } 53 | } 54 | } 55 | } 56 | http.NotFound(w, r) 57 | } 58 | 59 | func RunServer(db types.Client, pattern, path, version string, demo bool) { 60 | templates := []string{ 61 | fmt.Sprintf("%s/html/base.html", path), 62 | fmt.Sprintf("%s/html/panel.html", path), 63 | fmt.Sprintf("%s/html/explore.html", path), 64 | fmt.Sprintf("%s/html/browse.html", path), 65 | } 66 | router := mux.NewRouter().StrictSlash(true) 67 | handler := Handler{db: db, templates: templates, defaults: Response{DemoMode: demo, Version: version}} 68 | router.Handle("/", ErrorHandler(handler.Home)) 69 | router.Handle("/explore", ErrorHandler(handler.Explore)) 70 | router.Handle("/chart", ErrorHandler(handler.Chart)).Methods("GET") 71 | if demo { 72 | router.Handle("/1/dataset", ErrorHandler(handler.DatasetAPI)).Methods("GET") 73 | } else { 74 | router.Handle("/1/dataset", ErrorHandler(handler.DatasetAPI)).Methods("GET", "POST", "PUT", "DELETE") 75 | } 76 | router.Handle("/static/{directory}/{file}", StaticHandler{ 77 | Path: path, 78 | Allowed: []string{ 79 | "images", 80 | "css", 81 | "js", 82 | "fonts", 83 | }, 84 | }) 85 | log.Printf("Fit server listening @ %s", pattern) 86 | log.Fatal(http.ListenAndServe(pattern, handlers.CombinedLoggingHandler(os.Stdout, router))) 87 | } 88 | -------------------------------------------------------------------------------- /types/functions.go: -------------------------------------------------------------------------------- 1 | package types 2 | 3 | import ( 4 | mtx "github.com/gonum/matrix/mat64" 5 | "strings" 6 | ) 7 | 8 | type Function struct { 9 | Name string 10 | } 11 | 12 | func (fn Function) apply(mx []mtx.Matrix, f func(mtx.Matrix) float64) *mtx.Dense { 13 | var ( 14 | cols int 15 | result *mtx.Dense 16 | ) 17 | for i, view := range mx { 18 | if result == nil { 19 | _, cols = view.Dims() 20 | result = mtx.NewDense(len(mx), cols, nil) 21 | } 22 | // TODO: Determine if there is a better way to accomplish 23 | // this without type assertion 24 | other := view.(*mtx.Dense) 25 | for j := 0; j < cols; j++ { 26 | result.Set(i, j, f(other.ColView(j))) 27 | } 28 | } 29 | return result 30 | } 31 | 32 | func (fn Function) Apply(mx []mtx.Matrix) *mtx.Dense { 33 | switch strings.ToLower(fn.Name) { 34 | case "min": 35 | return fn.apply(mx, mtx.Min) 36 | case "max": 37 | return fn.apply(mx, mtx.Max) 38 | case "sum": 39 | return fn.apply(mx, mtx.Sum) 40 | default: // Use the average 41 | if len(mx) > 0 { 42 | return fn.apply(mx, func(o mtx.Matrix) float64 { 43 | r, _ := o.Dims() 44 | return mtx.Sum(o) / float64(r) 45 | }) 46 | } 47 | } 48 | return mtx.NewDense(0, 0, nil) 49 | } 50 | -------------------------------------------------------------------------------- /types/functions_test.go: -------------------------------------------------------------------------------- 1 | package types 2 | -------------------------------------------------------------------------------- /types/grouping.go: -------------------------------------------------------------------------------- 1 | package types 2 | 3 | import ( 4 | "encoding/json" 5 | "fmt" 6 | mtx "github.com/gonum/matrix/mat64" 7 | "strconv" 8 | "strings" 9 | "time" 10 | ) 11 | 12 | type grouping struct { 13 | Name string 14 | Index int 15 | Max string 16 | } 17 | 18 | // Grouping represents a "group by" configuration 19 | type Grouping struct { 20 | Name string 21 | Index int 22 | Max time.Duration 23 | } 24 | 25 | func (grp Grouping) UnmarshalJSON(data []byte) error { 26 | in := &grouping{} 27 | if err := json.Unmarshal(data, in); err != nil { 28 | return err 29 | } 30 | grp.Name = in.Name 31 | grp.Index = in.Index 32 | max, _ := time.ParseDuration(in.Max) 33 | grp.Max = max 34 | return nil 35 | } 36 | 37 | func (grp Grouping) MarshalJSON() ([]byte, error) { 38 | return json.Marshal(&grouping{ 39 | Name: grp.Name, 40 | Index: grp.Index, 41 | Max: grp.Max.String(), 42 | }) 43 | } 44 | 45 | func (grp Grouping) String() string { 46 | return fmt.Sprintf("%s,%d,%s", grp.Name, grp.Index, grp.Max.String()) 47 | } 48 | 49 | func (grp Grouping) Group(other *mtx.Dense) []mtx.Matrix { 50 | r, c := other.Dims() 51 | views := make([]mtx.Matrix, 0) 52 | var ( 53 | view mtx.Matrix 54 | previous time.Time 55 | current time.Time 56 | duration time.Duration 57 | ) 58 | for i, j := 0, 1; i+j <= r; j++ { 59 | view = other.View(i, 0, j, c) 60 | current = time.Unix(int64(view.At(j-1, grp.Index)), 0).UTC() 61 | duration += current.Sub(previous) 62 | if duration >= grp.Max { 63 | views = append(views, view) 64 | i, j = i+j, 0 65 | duration = time.Duration(0) 66 | } 67 | previous = current 68 | } 69 | return views 70 | } 71 | 72 | // NewGrouping returns a grouping based on a string 73 | // parameter. See documentation for Duration str format 74 | // 75 | // Duration,0,1min 76 | // ^--------^-^----Name,Index,DurationStr 77 | func NewGrouping(arg string) *Grouping { 78 | split := strings.Split(arg, ",") 79 | var grouping *Grouping 80 | if len(split) > 0 { 81 | grouping = &Grouping{ 82 | Name: split[0], 83 | } 84 | } 85 | if len(split) >= 2 { 86 | index, _ := strconv.ParseInt(split[1], 0, 64) 87 | grouping.Index = int(index) 88 | } 89 | if len(split) >= 3 { 90 | duration, _ := time.ParseDuration(split[2]) 91 | grouping.Max = duration 92 | } 93 | return grouping 94 | } 95 | -------------------------------------------------------------------------------- /types/grouping_test.go: -------------------------------------------------------------------------------- 1 | package types 2 | 3 | import ( 4 | "fmt" 5 | mtx "github.com/gonum/matrix/mat64" 6 | "github.com/stretchr/testify/assert" 7 | "math" 8 | "math/rand" 9 | "testing" 10 | "time" 11 | ) 12 | 13 | func round(num float64) int { 14 | return int(num + math.Copysign(0.5, num)) 15 | } 16 | 17 | func toFixed(num float64, precision int) float64 { 18 | output := math.Pow(10, float64(precision)) 19 | return float64(round(num*output)) / output 20 | } 21 | 22 | func TestGrouping(t *testing.T) { 23 | grouping := NewGrouping("Duration,0,2s") 24 | assert.Equal(t, 2*time.Second, grouping.Max) 25 | assert.Equal(t, 0, grouping.Index) 26 | assert.Equal(t, "Duration,0,2s", grouping.String()) 27 | mx := mtx.NewDense(10, 10, nil) 28 | r, c := mx.Dims() 29 | start := time.Date(2001, time.January, 0, 0, 0, 1, 1, time.UTC) 30 | for i := 0; i < r; i++ { 31 | mx.Set(i, 0, float64(start.Unix())) 32 | mx.Set(i, 1, 1.0) 33 | start = start.Add(1 * time.Second) 34 | for j := 2; j < c; j++ { 35 | mx.Set(i, j, toFixed(rand.Float64(), 2)) 36 | } 37 | } 38 | assert.Equal(t, mtx.Sum(mx.ColView(1)), 10.0) 39 | assert.True(t, mtx.Sum(mx.ColView(2)) < 10) 40 | views := grouping.Group(mx) 41 | assert.Len(t, views, 5) 42 | rows := 0 43 | for _, v := range views { 44 | fmt.Println(mtx.Formatted(v)) 45 | r, _ := v.Dims() 46 | rows += r 47 | } 48 | assert.Equal(t, 10, r) 49 | //mx = apply(result, Avg) 50 | //r, c = mx.Dims() 51 | //assert.Equal(t, 5, r) 52 | //assert.Equal(t, 10, c) 53 | //fmt.Println(mtx.Formatted(mx)) 54 | } 55 | 56 | func init() { 57 | rand.Seed(time.Now().Unix()) 58 | } 59 | -------------------------------------------------------------------------------- /types/query.go: -------------------------------------------------------------------------------- 1 | package types 2 | 3 | import ( 4 | mtx "github.com/gonum/matrix/mat64" 5 | "net/url" 6 | "strings" 7 | ) 8 | 9 | // Query can be used to combine the results 10 | // of multiple datasets into a single 11 | // matrix of values. Queries can originate 12 | // from the command line as arguments, 13 | // a URL query string, or a JSON encoded 14 | // payload. 15 | // 16 | // Command line arguments take the same 17 | // form as URL encoding 18 | // 19 | // Text Specification: 20 | // d=DS1,x,y&d=DS2,z,fuu&grouping=Duration,0,1m&fn=avg 21 | // 22 | type Query struct { 23 | Datasets []struct { 24 | Name string // Name of the dataset 25 | Columns []string // Columns within the dataset to query 26 | } 27 | Function *Function 28 | Grouping *Grouping 29 | } 30 | 31 | // Len returns the length of the Query 32 | func (query Query) Len() int { 33 | return len(query.Datasets) 34 | } 35 | 36 | // Columns returns a flattened ordered 37 | // array of Column names 38 | func (query Query) Columns() []string { 39 | columns := make([]string, 0) 40 | for _, dataset := range query.Datasets { 41 | for _, column := range dataset.Columns { 42 | columns = append(columns, column) 43 | } 44 | } 45 | return columns 46 | } 47 | 48 | // String returns a valid URL query string 49 | func (query Query) String() string { 50 | values := url.Values{} 51 | values.Add("fn", query.Function.Name) 52 | if query.Grouping != nil { 53 | values.Add("grouping", query.Grouping.String()) 54 | } 55 | for _, dataset := range query.Datasets { 56 | args := make([]string, len(dataset.Columns)+1) 57 | args[0] = dataset.Name 58 | for i, column := range dataset.Columns { 59 | args[i+1] = column 60 | } 61 | values.Add("q", strings.TrimRight(strings.Join(args, ","), ",")) 62 | } 63 | return values.Encode() 64 | } 65 | 66 | // Apply returns a new modified matrix based on the query 67 | func (query Query) Apply(mx *mtx.Dense) *mtx.Dense { 68 | if query.Grouping != nil { 69 | return query.Function.Apply(query.Grouping.Group(mx)) 70 | } 71 | return mx 72 | } 73 | 74 | // NewQuery constructs a Query from the provided 75 | // args and optionally specified function. 76 | // If function is specified the query returns 77 | // aggregated 78 | func NewQuery(args []string, function, grouping string) *Query { 79 | query := &Query{ 80 | Datasets: make([]struct { 81 | Name string 82 | Columns []string 83 | }, len(args)), 84 | Function: &Function{ 85 | Name: function, 86 | }, 87 | } 88 | if grouping != "" { 89 | query.Grouping = NewGrouping(grouping) 90 | } 91 | for i, arg := range args { 92 | split := strings.Split(arg, ",") 93 | if len(split) >= 1 { 94 | query.Datasets[i].Name = split[0] 95 | } 96 | if len(split) > 1 { 97 | query.Datasets[i].Columns = split[1:] 98 | } 99 | } 100 | return query 101 | } 102 | 103 | // NewQueryQS constructs a query from a url.URL 104 | func NewQueryQS(u *url.URL) *Query { 105 | var args []string 106 | query := u.Query() 107 | if q, ok := query["q"]; ok { 108 | args = q 109 | } 110 | return NewQuery(args, query.Get("fn"), query.Get("grouping")) 111 | } 112 | -------------------------------------------------------------------------------- /types/query_test.go: -------------------------------------------------------------------------------- 1 | package types 2 | 3 | import ( 4 | "github.com/stretchr/testify/assert" 5 | "net/url" 6 | "testing" 7 | "time" 8 | ) 9 | 10 | func TestQuery(t *testing.T) { 11 | u, err := url.Parse("http://localhost/?q=D0,x,y,z&q=D1,z&grouping=Duration,0,1m&fn=avg") 12 | assert.NoError(t, err) 13 | query := NewQueryQS(u) 14 | assert.Equal(t, 2, query.Len()) 15 | assert.Equal(t, "D0", query.Datasets[0].Name) 16 | assert.Equal(t, 3, len(query.Datasets[0].Columns)) 17 | assert.Equal(t, "x", query.Datasets[0].Columns[0]) 18 | assert.Equal(t, "y", query.Datasets[0].Columns[1]) 19 | assert.Equal(t, "z", query.Datasets[0].Columns[2]) 20 | assert.Equal(t, 1, len(query.Datasets[1].Columns)) 21 | assert.Equal(t, "z", query.Datasets[1].Columns[0]) 22 | assert.Equal(t, "D1", query.Datasets[1].Name) 23 | assert.Equal(t, "avg", query.Function.Name) 24 | assert.Equal(t, 0, query.Grouping.Index) 25 | assert.Equal(t, time.Minute, query.Grouping.Max) 26 | assert.Equal(t, "fn=avg&grouping=Duration%2C0%2C1m0s&q=D0%2Cx%2Cy%2Cz&q=D1%2Cz", query.String()) 27 | } 28 | -------------------------------------------------------------------------------- /types/types.go: -------------------------------------------------------------------------------- 1 | package types 2 | 3 | import ( 4 | "encoding/json" 5 | "errors" 6 | "github.com/gonum/matrix" 7 | mtx "github.com/gonum/matrix/mat64" 8 | "io" 9 | "math" 10 | "sync" 11 | ) 12 | 13 | var ( 14 | ErrAPI = errors.New("api error") 15 | ErrNoData = errors.New("no data") 16 | ErrNotFound = errors.New("not found") 17 | ErrBadQuery = errors.New("bad query") 18 | ) 19 | 20 | // Work around for handling NaN values in JSON 21 | // https://github.com/golang/go/issues/3480 22 | type value float64 23 | 24 | func (v value) MarshalJSON() ([]byte, error) { 25 | if math.IsNaN(float64(v)) { 26 | return json.Marshal(nil) 27 | } 28 | return json.Marshal(float64(v)) 29 | } 30 | 31 | func (v *value) UnmarshalJSON(data []byte) error { 32 | if err := json.Unmarshal(data, nil); err != nil { 33 | val := float64(0.0) 34 | if err := json.Unmarshal(data, &val); err == nil { 35 | *v = value(val) 36 | } 37 | } else { 38 | *v = value(math.NaN()) 39 | } 40 | return nil 41 | } 42 | 43 | type values []value 44 | 45 | type Client interface { 46 | Datasets() ([]*Dataset, error) 47 | Write(*Dataset) error 48 | Delete(string) error 49 | Query(*Query) (*Dataset, error) 50 | } 51 | 52 | // Stats contain statistics about the 53 | // underlying data in a dataset 54 | type Stats struct { 55 | Rows int 56 | Columns int 57 | } 58 | 59 | type dataset struct { 60 | Name string 61 | Columns []string 62 | Stats *Stats 63 | Mtx []value 64 | } 65 | 66 | // Dataset consists of a name and 67 | // an ordered array of column names 68 | type Dataset struct { 69 | Name string // Name of this dataset 70 | Columns []string // Ordered array of cols 71 | Mtx *mtx.Dense `json:"-"` // Dense Matrix contains all values in the dataset 72 | Stats *Stats 73 | lock sync.RWMutex 74 | index int 75 | WithValues bool 76 | } 77 | 78 | func (ds *Dataset) MarshalJSON() ([]byte, error) { 79 | ds.stats() 80 | out := &dataset{ 81 | Name: ds.Name, 82 | Columns: ds.Columns, 83 | Stats: ds.Stats, 84 | } 85 | if ds.WithValues && ds.Mtx != nil { 86 | r, c := ds.Mtx.Dims() 87 | out.Mtx = make([]value, r*c) 88 | for i, val := range ds.Mtx.RawMatrix().Data { 89 | out.Mtx[i] = value(val) 90 | } 91 | } 92 | return json.Marshal(out) 93 | } 94 | 95 | func (ds *Dataset) UnmarshalJSON(data []byte) error { 96 | in := &dataset{} 97 | if err := json.Unmarshal(data, in); err != nil { 98 | return err 99 | } 100 | ds.Name = in.Name 101 | ds.Columns = in.Columns 102 | ds.Stats = in.Stats 103 | return matrix.Maybe(func() { 104 | if ds.WithValues && in.Mtx != nil { 105 | values := make([]float64, ds.Stats.Rows*ds.Stats.Columns) 106 | for i := 0; i < len(in.Mtx); i++ { 107 | values[i] = float64(in.Mtx[i]) 108 | } 109 | ds.Mtx = mtx.NewDense(ds.Stats.Rows, ds.Stats.Columns, values) 110 | } 111 | }) 112 | } 113 | 114 | // stats updates the Stats struct 115 | func (ds *Dataset) stats() { 116 | if ds.Stats == nil { 117 | ds.Stats = &Stats{} 118 | } 119 | if ds.Mtx != nil { 120 | ds.Stats.Rows, ds.Stats.Columns = ds.Mtx.Dims() 121 | } 122 | } 123 | 124 | // Len returns the length (number of rows) of the dataset 125 | func (ds Dataset) Len() int { 126 | len := 0 127 | if ds.Mtx != nil { 128 | len, _ = ds.Mtx.Dims() 129 | } 130 | return len 131 | } 132 | 133 | // CPos returns the position of a column 134 | // name in a dataset. If the column 135 | // does not exist it returns -1 136 | func (ds Dataset) CPos(name string) int { 137 | for i, col := range ds.Columns { 138 | if name == col { 139 | return i 140 | } 141 | } 142 | return -1 143 | } 144 | 145 | // Next returns the next row of values 146 | // If all values have been traversed 147 | // it returns io.EOF. Implements the 148 | // loader.Reader interface 149 | func (ds *Dataset) Next() ([]float64, error) { 150 | ds.lock.Lock() 151 | defer ds.lock.Unlock() 152 | if ds.Mtx == nil { 153 | return nil, ErrNoData 154 | } 155 | r, _ := ds.Mtx.Dims() 156 | if ds.index >= r { 157 | ds.index = 0 158 | return nil, io.EOF 159 | } 160 | rows := ds.Mtx.RawRowView(ds.index) 161 | ds.index++ 162 | return rows, nil 163 | } 164 | -------------------------------------------------------------------------------- /types/types_test.go: -------------------------------------------------------------------------------- 1 | package types 2 | 3 | import ( 4 | "encoding/json" 5 | mtx "github.com/gonum/matrix/mat64" 6 | "github.com/stretchr/testify/assert" 7 | "math" 8 | "testing" 9 | ) 10 | 11 | func TestDatasetJSON(t *testing.T) { 12 | ds := &Dataset{ 13 | Name: "TestDataset", 14 | Columns: []string{"V1", "V2"}, 15 | Mtx: mtx.NewDense(3, 2, []float64{1.0, 1.0, 2.0, 2.0, 3.0, math.NaN()}), 16 | WithValues: true, 17 | } 18 | raw, err := json.Marshal(ds) 19 | assert.NoError(t, err) 20 | out := &Dataset{WithValues: true} 21 | assert.NoError(t, json.Unmarshal(raw, out)) 22 | assert.Equal(t, ds.Name, out.Name) 23 | assert.Equal(t, ds.Columns[0], out.Columns[0]) 24 | assert.Equal(t, ds.Columns[1], out.Columns[1]) 25 | assert.Equal(t, 1.0, ds.Mtx.At(0, 0)) 26 | assert.Equal(t, 1.0, ds.Mtx.At(0, 1)) 27 | 28 | assert.Equal(t, 2.0, ds.Mtx.At(1, 0)) 29 | assert.Equal(t, 2.0, ds.Mtx.At(1, 1)) 30 | 31 | assert.Equal(t, 3.0, ds.Mtx.At(2, 0)) 32 | assert.True(t, math.IsNaN(ds.Mtx.At(2, 1))) 33 | } 34 | -------------------------------------------------------------------------------- /www/css/app.css: -------------------------------------------------------------------------------- 1 | body { 2 | padding-top: 50px; 3 | } 4 | 5 | .options-right { 6 | border-left: 1px solid #ccc; 7 | } 8 | 9 | .panel-body.chart { 10 | background-color: #000; 11 | } 12 | 13 | .browse { 14 | margin-top: 25px; 15 | text-align: center; 16 | } 17 | 18 | .navbar{ 19 | background-color: #222222; 20 | min-height: 0px !important; 21 | padding-top: 2px; 22 | } 23 | 24 | /* Always float the navbar header */ 25 | .navbar-header { 26 | float: left; 27 | } 28 | 29 | /* Undo the collapsing navbar */ 30 | .navbar-collapse { 31 | display: block !important; 32 | height: auto !important; 33 | padding-bottom: 0; 34 | overflow: visible !important; 35 | visibility: visible !important; 36 | } 37 | 38 | .navbar-toggle { 39 | display: none; 40 | } 41 | .navbar-collapse { 42 | border-top: 0; 43 | } 44 | 45 | .navbar-brand { 46 | margin-left: -15px; 47 | } 48 | 49 | /* Always apply the floated nav */ 50 | .navbar-nav { 51 | float: left; 52 | margin: 0; 53 | } 54 | .navbar-nav > li { 55 | float: left; 56 | } 57 | .navbar-nav > li > a { 58 | padding: 15px; 59 | } 60 | 61 | /* Redeclare since we override the float above */ 62 | .navbar-nav.navbar-right { 63 | float: right; 64 | } 65 | 66 | /* Undo custom dropdowns */ 67 | .navbar .navbar-nav .open .dropdown-menu { 68 | position: absolute; 69 | float: left; 70 | border: 1px solid #ccc; 71 | border: 1px solid rgba(0, 0, 0, .15); 72 | border-width: 0 1px 1px; 73 | border-radius: 0 0 4px 4px; 74 | -webkit-box-shadow: 0 6px 12px rgba(0, 0, 0, .175); 75 | box-shadow: 0 6px 12px rgba(0, 0, 0, .175); 76 | } 77 | .navbar-default .navbar-nav .open .dropdown-menu > li > a { 78 | color: #333; 79 | } 80 | .navbar .navbar-nav .open .dropdown-menu > li > a:hover, 81 | .navbar .navbar-nav .open .dropdown-menu > li > a:focus, 82 | .navbar .navbar-nav .open .dropdown-menu > .active > a, 83 | .navbar .navbar-nav .open .dropdown-menu > .active > a:hover, 84 | .navbar .navbar-nav .open .dropdown-menu > .active > a:focus { 85 | color: #fff !important; 86 | background-color: #428bca !important; 87 | } 88 | .navbar .navbar-nav .open .dropdown-menu > .disabled > a, 89 | .navbar .navbar-nav .open .dropdown-menu > .disabled > a:hover, 90 | .navbar .navbar-nav .open .dropdown-menu > .disabled > a:focus { 91 | color: #999 !important; 92 | background-color: transparent !important; 93 | } 94 | 95 | /* Undo form expansion */ 96 | .navbar-form { 97 | float: left; 98 | width: auto; 99 | padding-top: 0; 100 | padding-bottom: 0; 101 | margin-right: 0; 102 | margin-left: 0; 103 | border: 0; 104 | -webkit-box-shadow: none; 105 | box-shadow: none; 106 | } 107 | 108 | /* Copy-pasted from forms.less since we mixin the .form-inline styles. */ 109 | .navbar-form .form-group { 110 | display: inline-block; 111 | margin-bottom: 0; 112 | vertical-align: middle; 113 | } 114 | 115 | .navbar-form .form-control { 116 | display: inline-block; 117 | width: auto; 118 | vertical-align: middle; 119 | } 120 | 121 | .navbar-form .form-control-static { 122 | display: inline-block; 123 | } 124 | 125 | .navbar-form .input-group { 126 | display: inline-table; 127 | vertical-align: middle; 128 | } 129 | 130 | .navbar-form .input-group .input-group-addon, 131 | .navbar-form .input-group .input-group-btn, 132 | .navbar-form .input-group .form-control { 133 | width: auto; 134 | } 135 | 136 | .navbar-form .input-group > .form-control { 137 | width: 100%; 138 | } 139 | 140 | .navbar-form .control-label { 141 | margin-bottom: 0; 142 | vertical-align: middle; 143 | } 144 | 145 | .navbar-form .radio, 146 | .navbar-form .checkbox { 147 | display: inline-block; 148 | margin-top: 0; 149 | margin-bottom: 0; 150 | vertical-align: middle; 151 | } 152 | 153 | .navbar-form .radio label, 154 | .navbar-form .checkbox label { 155 | padding-left: 0; 156 | } 157 | 158 | .navbar-form .radio input[type="radio"], 159 | .navbar-form .checkbox input[type="checkbox"] { 160 | position: relative; 161 | margin-left: 0; 162 | } 163 | 164 | .navbar-form .has-feedback .form-control-feedback { 165 | top: 0; 166 | } 167 | 168 | -------------------------------------------------------------------------------- /www/css/font-awesome.min.css: -------------------------------------------------------------------------------- 1 | /*! 2 | * Font Awesome 4.6.3 by @davegandy - http://fontawesome.io - @fontawesome 3 | * License - http://fontawesome.io/license (Font: SIL OFL 1.1, CSS: MIT License) 4 | */@font-face{font-family:'FontAwesome';src:url('../fonts/fontawesome-webfont.eot?v=4.6.3');src:url('../fonts/fontawesome-webfont.eot?#iefix&v=4.6.3') format('embedded-opentype'),url('../fonts/fontawesome-webfont.woff2?v=4.6.3') format('woff2'),url('../fonts/fontawesome-webfont.woff?v=4.6.3') format('woff'),url('../fonts/fontawesome-webfont.ttf?v=4.6.3') format('truetype'),url('../fonts/fontawesome-webfont.svg?v=4.6.3#fontawesomeregular') format('svg');font-weight:normal;font-style:normal}.fa{display:inline-block;font:normal normal normal 14px/1 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Fit is a tool for reading, manipulating, and exploring time series data.

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Explore Example Series

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TCX Data

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TCX Data

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Series

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Query

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Time Range

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Options

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Function
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TODO
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91 | 92 | 93 | 132 | 133 | {{end}} 134 | 135 | -------------------------------------------------------------------------------- /www/html/panel.html: -------------------------------------------------------------------------------- 1 | {{define "panel"}} 2 | 3 | 35 | 36 | {{end}} 37 | -------------------------------------------------------------------------------- /www/images/gopher-fit.ico: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/kevinschoon/fit/fc27e31445f0d6fbcfacc8dbeb0f920657fedcb2/www/images/gopher-fit.ico -------------------------------------------------------------------------------- /www/images/gopher-fit.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/kevinschoon/fit/fc27e31445f0d6fbcfacc8dbeb0f920657fedcb2/www/images/gopher-fit.png -------------------------------------------------------------------------------- /www/images/gopher-fit.xcf: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/kevinschoon/fit/fc27e31445f0d6fbcfacc8dbeb0f920657fedcb2/www/images/gopher-fit.xcf -------------------------------------------------------------------------------- /www/images/tcx.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/kevinschoon/fit/fc27e31445f0d6fbcfacc8dbeb0f920657fedcb2/www/images/tcx.png -------------------------------------------------------------------------------- /www/images/temperatures.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/kevinschoon/fit/fc27e31445f0d6fbcfacc8dbeb0f920657fedcb2/www/images/temperatures.png -------------------------------------------------------------------------------- /www/js/app.js: -------------------------------------------------------------------------------- 1 | $(function() { 2 | function update(uri, key, value) { 3 | /*Thanks http://stackoverflow.com/questions/5999118/add-or-update-query-string-parameter#6021027*/ 4 | if (typeof value != 'undefined') { 5 | var re = new RegExp("([?&])" + key + "=.*?(&|$)", "i"); 6 | var separator = uri.indexOf('?') !== -1 ? "&" : "?"; 7 | if (uri.match(re)) { 8 | return uri.replace(re, '$1' + key + "=" + value + '$2'); 9 | } else { 10 | return uri + separator + key + "=" + value; 11 | } 12 | } 13 | return uri 14 | } 15 | $("#submit").on('click', function() { 16 | var target = window.location.pathname 17 | var Q = window.location.search 18 | Q = update(Q, "X", $("#x").val()) 19 | Q = update(Q, "Y", $("#y").val()) 20 | Q = update(Q, "aggr", $("#aggr").val()) 21 | Q = update(Q, "fn", $("#fn").val()) 22 | Q = update(Q, "start", $("#start").val()) 23 | Q = update(Q, "end", $("#end").val()) 24 | window.location = window.location.pathname + Q 25 | }); 26 | }) 27 | -------------------------------------------------------------------------------- /www/js/bootstrap.min.js: -------------------------------------------------------------------------------- 1 | /*! 2 | * Bootstrap v3.3.7 (http://getbootstrap.com) 3 | * Copyright 2011-2016 Twitter, Inc. 4 | * Licensed under the MIT license 5 | */ 6 | 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