├── .gitignore ├── CHANGELOG.md ├── LICENSE ├── README.md ├── doc └── intro.md ├── project.clj ├── src └── fort_knox │ ├── core.clj │ ├── leveldb.clj │ └── lmdb.clj └── test └── fort_knox └── core_test.clj /.gitignore: -------------------------------------------------------------------------------- 1 | /target 2 | /classes 3 | /checkouts 4 | pom.xml 5 | pom.xml.asc 6 | *.jar 7 | *.class 8 | /.lein-* 9 | /.nrepl-port 10 | .hgignore 11 | .hg/ 12 | -------------------------------------------------------------------------------- /CHANGELOG.md: -------------------------------------------------------------------------------- 1 | # Change Log 2 | All notable changes to this project will be documented in this file. This change log follows the conventions of [keepachangelog.com](http://keepachangelog.com/). 3 | 4 | ## [Unreleased] 5 | ### Changed 6 | - Add a new arity to `make-widget-async` to provide a different widget shape. 7 | 8 | ## [0.1.1] - 2016-05-19 9 | ### Changed 10 | - Documentation on how to make the widgets. 11 | 12 | ### Removed 13 | - `make-widget-sync` - we're all async, all the time. 14 | 15 | ### Fixed 16 | - Fixed widget maker to keep working when daylight savings switches over. 17 | 18 | ## 0.1.0 - 2016-05-19 19 | ### Added 20 | - Files from the new template. 21 | - Widget maker public API - `make-widget-sync`. 22 | 23 | [Unreleased]: https://github.com/your-name/fort-knox/compare/0.1.1...HEAD 24 | [0.1.1]: https://github.com/your-name/fort-knox/compare/0.1.0...0.1.1 25 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE PUBLIC 2 | LICENSE ("AGREEMENT"). 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No party to this 212 | Agreement will bring a legal action under this Agreement more than one year 213 | after the cause of action arose. Each party waives its rights to a jury trial 214 | in any resulting litigation. 215 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # fort-knox 2 | 3 | An implementation of `core.cache` that saves entries to disk. 4 | 5 | You get a chance to use LevelDB (default) or LMDB. 6 | 7 | [![Circle CI](https://circleci.com/gh/shriphani/fort-knox.svg?style=shield&circle-token=d6290287207f1a753a288eb4363c9ce8a1d0f3d9)](https://circleci.com/gh/shriphani/fort-knox) 8 | 9 | 10 | [![Clojars Project](https://img.shields.io/clojars/v/fort-knox.svg)](https://clojars.org/fort-knox) 11 | 12 | 13 | **DISCLAIMER** typical `core.cache` implementations use persistent 14 | and associative data structures. Since a disk-backed key-value 15 | store doesn't have any such concept, this implementation might 16 | not conform to expected behavior. 17 | 18 | ## Usage 19 | 20 | Import this implementation: 21 | 22 | ```clojure 23 | user> (use 'fort-knox.core :reload-all) 24 | nil 25 | ``` 26 | 27 | Create a cache (LevelDB by default): 28 | 29 | ```clojure 30 | user> (def cache (make-cache "/tmp")) 31 | #'user/cache 32 | ``` 33 | 34 | If you want to use LMDB: 35 | 36 | ```clojure 37 | user> (def cache (make-cache "/tmp" :type :lmdb)) 38 | #'user/cache 39 | ``` 40 | 41 | Everything else is from `core.cache`. For example: 42 | 43 | ```clojure 44 | user> (cache/has? cache "foo") 45 | false 46 | user> (cache/miss cache "foo" "bar") 47 | {:env #object[org.fusesource.lmdbjni.Env 0x6e09d885 "org.fusesource.lmdbjni.Env@6e09d885"], :db #object[org.fusesource.lmdbjni.Database 0x65807b47 "org.fusesource.lmdbjni.Database@65807b47"]} 48 | user> (cache/has? cache "foo") 49 | true 50 | ``` 51 | 52 | ## License 53 | 54 | Copyright © 2016 Shriphani Palakodety 55 | 56 | Distributed under the Eclipse Public License either version 1.0 or (at 57 | your option) any later version. 58 | -------------------------------------------------------------------------------- /doc/intro.md: -------------------------------------------------------------------------------- 1 | # Introduction to fort-knox 2 | 3 | TODO: write [great documentation](http://jacobian.org/writing/what-to-write/) 4 | -------------------------------------------------------------------------------- /project.clj: -------------------------------------------------------------------------------- 1 | (defproject fort-knox "0.4.0" 2 | :description "A disk-backed core.cache implementation based on LMDB" 3 | :url "https://github.com/shriphani/fort-knox" 4 | :license {:name "Eclipse Public License" 5 | :url "http://www.eclipse.org/legal/epl-v10.html"} 6 | :dependencies [[org.clojure/clojure "1.8.0"] 7 | [org.clojure/core.cache "0.6.5"] 8 | [byte-streams "0.2.2"] 9 | [clj-lmdb "0.2.4"] 10 | [factual/clj-leveldb "0.1.1"] 11 | [clj-named-leveldb "0.1.0"] 12 | [me.raynes/fs "1.4.6"]]) 13 | -------------------------------------------------------------------------------- /src/fort_knox/core.clj: -------------------------------------------------------------------------------- 1 | (ns fort-knox.core 2 | (:require [clojure.core.cache :refer :all] 3 | [me.raynes.fs :as fs] 4 | [fort-knox.leveldb :as leveldb] 5 | [fort-knox.lmdb :as lmdb]) 6 | (:import [fort_knox.leveldb LevelDBCache] 7 | [fort_knox.lmdb LMDBCache] 8 | [java.lang UnsupportedOperationException])) 9 | 10 | (defn make-cache 11 | "Args: 12 | location: /path/to/location/to/persist/cache - should be a directory" 13 | ([location] 14 | (make-cache location :type :leveldb)) 15 | 16 | ([location & options] 17 | ;; first make the directory if it doesn't exist 18 | (let [options-dict (into {} 19 | [(into [] 20 | options)])] 21 | 22 | (when-not (fs/exists? location) 23 | (fs/mkdir location)) 24 | 25 | ;; set up the database 26 | (cond (-> options-dict 27 | :type 28 | (= :leveldb)) 29 | (LevelDBCache. 30 | (leveldb/make-cache location)) 31 | 32 | (-> options-dict 33 | :type 34 | (= :lmdb)) 35 | (LMDBCache. 36 | (lmdb/make-cache location)) 37 | 38 | :else 39 | (UnsupportedOperationException. "This DB is not supported (yet)."))))) 40 | 41 | (defn make-cache-from-db 42 | "Args: 43 | db: An existing lmdb instance" 44 | [db & options] 45 | (let [options-dict (->> options 46 | (into []) 47 | vector 48 | (into {}))] 49 | (cond (-> options-dict 50 | :type 51 | (= :lmdb)) 52 | (LMDBCache. db) 53 | 54 | (-> options-dict 55 | :type 56 | (= :leveldb)) 57 | (LevelDBCache. db) 58 | 59 | :else 60 | (UnsupportedOperationException. "This DB is not supported (yet).")))) 61 | -------------------------------------------------------------------------------- /src/fort_knox/leveldb.clj: -------------------------------------------------------------------------------- 1 | (ns fort-knox.leveldb 2 | (:require [byte-streams] 3 | [clojure.core.cache :refer :all] 4 | [clj-leveldb :as leveldb] 5 | [clj-named-leveldb.core :as named-leveldb] 6 | [me.raynes.fs :as fs]) 7 | (:import [clj_leveldb LevelDB])) 8 | 9 | (defn cache->leveldb 10 | [cache] 11 | (let [cache* (into {} cache) 12 | 13 | db* (:db cache*) 14 | name* (:name cache*) 15 | 16 | db (leveldb/->LevelDB (:db db*) 17 | (:key-decoder db*) 18 | (:key-encoder db*) 19 | (:val-decoder db*) 20 | (:val-encoder db*))] 21 | (named-leveldb/make-named-db db name*))) 22 | 23 | (defn fixed-to-string 24 | [x] 25 | (if-not (nil? x) 26 | (byte-streams/to-string x))) 27 | 28 | (defcache LevelDBCache 29 | [cache] 30 | CacheProtocol 31 | (lookup 32 | [_ item] 33 | (fixed-to-string 34 | (named-leveldb/get (cache->leveldb cache) 35 | (name item)))) 36 | 37 | (lookup 38 | [_ item not-found] 39 | (or (fixed-to-string 40 | (named-leveldb/get (cache->leveldb cache) 41 | (name item))) 42 | not-found)) 43 | 44 | (has? 45 | [_ item] 46 | (-> (named-leveldb/get (cache->leveldb cache) 47 | (name item)) 48 | nil? 49 | not)) 50 | 51 | (hit 52 | [cache item] 53 | cache) 54 | 55 | (miss 56 | [_ item result] 57 | (named-leveldb/put (cache->leveldb cache) 58 | (name item) 59 | result) 60 | (LevelDBCache. cache)) 61 | 62 | (evict 63 | [_ k] 64 | (named-leveldb/delete (cache->leveldb cache) 65 | (name k)) 66 | (LevelDBCache. cache)) 67 | 68 | (seed 69 | [_ base] 70 | (LevelDBCache. base))) 71 | 72 | (defn make-cache 73 | "Args: 74 | location: /path/to/location/to/persist/cache - should be a directory" 75 | ([location] 76 | (make-cache location 77 | "")) 78 | 79 | ([location name] 80 | 81 | ;; first make the directory if it doesn't exist 82 | (when-not (fs/exists? location) 83 | (fs/mkdir location)) 84 | 85 | ;; set up the database 86 | (let [db (leveldb/create-db 87 | location 88 | {}) 89 | 90 | named-db (named-leveldb/make-named-db db 91 | name)] 92 | (LevelDBCache. named-db)))) 93 | 94 | (defn make-cache-from-db 95 | "Args: 96 | db: An existing lmdb instance" 97 | [db] 98 | (LevelDBCache. db)) 99 | 100 | (def make-db leveldb/create-db) 101 | -------------------------------------------------------------------------------- /src/fort_knox/lmdb.clj: -------------------------------------------------------------------------------- 1 | (ns fort-knox.lmdb 2 | (:require [clojure.core.cache :refer :all] 3 | [clj-lmdb.simple :refer :all] 4 | [clj-lmdb.core :as lmdb] 5 | [me.raynes.fs :as fs])) 6 | 7 | (defn cache->lmdb 8 | [cache] 9 | (let [cache* (into {} cache)] 10 | (lmdb/->DB (:env cache*) 11 | (:db cache*)))) 12 | 13 | (defcache LMDBCache 14 | [cache] 15 | CacheProtocol 16 | (lookup 17 | [_ item] 18 | (with-txn [rtxn (read-txn (cache->lmdb cache))] 19 | (get! (cache->lmdb cache) 20 | rtxn 21 | (name item)))) 22 | 23 | (lookup 24 | [_ item not-found] 25 | (with-txn [rtxn (read-txn (cache->lmdb cache))] 26 | (or (get! (cache->lmdb cache) 27 | rtxn 28 | (name item)) 29 | not-found))) 30 | 31 | (has? 32 | [_ item] 33 | (with-txn [rtxn (read-txn (cache->lmdb cache))] 34 | (-> (get! (cache->lmdb cache) 35 | rtxn 36 | (name item)) 37 | nil? 38 | not))) 39 | 40 | (hit 41 | [cache item] 42 | cache) 43 | 44 | (miss 45 | [_ item result] 46 | (with-txn [wtxn (write-txn (cache->lmdb cache))] 47 | (put! (cache->lmdb cache) 48 | wtxn 49 | (name item) 50 | result)) 51 | (LMDBCache. cache)) 52 | 53 | (evict 54 | [_ k] 55 | (with-txn [wtxn (write-txn (cache->lmdb cache))] 56 | (delete! (cache->lmdb cache) wtxn (name k))) 57 | (LMDBCache. cache)) 58 | 59 | (seed 60 | [_ base] 61 | (LMDBCache. base))) 62 | 63 | (defn make-cache 64 | "Args: 65 | location: /path/to/location/to/persist/cache - should be a directory" 66 | [location] 67 | 68 | ;; first make the directory if it doesn't exist 69 | (when-not (fs/exists? location) 70 | (fs/mkdir location)) 71 | 72 | ;; set up the database 73 | (LMDBCache. 74 | (make-db location))) 75 | 76 | (defn make-cache-from-db 77 | "Args: 78 | db: An existing lmdb instance" 79 | [db] 80 | (LMDBCache. db)) 81 | -------------------------------------------------------------------------------- /test/fort_knox/core_test.clj: -------------------------------------------------------------------------------- 1 | (ns fort-knox.core-test 2 | (:require [clojure.test :refer :all] 3 | [fort-knox.core :refer :all] 4 | [clojure.core.cache :as cache] 5 | [me.raynes.fs :as fs])) 6 | 7 | (deftest lmdb-cache-test 8 | (testing "Start with an empty cache, add a bunch of things ^.^" 9 | 10 | (let [path (fs/temp-name "tmp-cache") 11 | the-cache (make-cache path :type :lmdb)] 12 | (is 13 | (not 14 | (cache/has? the-cache 15 | "foo"))) 16 | 17 | 18 | (cache/miss the-cache 19 | "foo" 20 | "bar") 21 | (is 22 | (cache/has? the-cache 23 | "foo")) 24 | 25 | (is 26 | (= "bar" 27 | (cache/lookup the-cache 28 | "foo"))) 29 | 30 | (fs/delete-dir path)))) 31 | 32 | (deftest leveldb-cache-test 33 | (testing "Start with an empty cache, add a bunch of things ^.^" 34 | 35 | (let [path (fs/temp-name "tmp-cache") 36 | the-cache (make-cache path :type :leveldb)] 37 | (is 38 | (not 39 | (cache/has? the-cache 40 | "foo"))) 41 | 42 | 43 | (cache/miss the-cache 44 | "foo" 45 | "bar") 46 | (is 47 | (cache/has? the-cache 48 | "foo")) 49 | 50 | (is 51 | (= "bar" 52 | (cache/lookup the-cache 53 | "foo"))) 54 | 55 | (fs/delete-dir path)))) 56 | --------------------------------------------------------------------------------