├── Rust ├── .gitignore ├── local.settings-example.json ├── Cargo.toml ├── host.json ├── SimpleHttpTrigger │ └── function.json ├── README.md ├── src │ └── main.rs └── Cargo.lock ├── go ├── GoCustomHandlers ├── local.settings-example.json ├── host.json ├── SimpleHttpTrigger │ └── function.json ├── HttpTriggerWithStreaming │ └── function.json ├── QueueTrigger │ └── function.json ├── BlobTrigger │ └── function.json ├── QueueTriggerWithOutputs │ └── function.json ├── readme.md └── GoCustomHandlers.go ├── R ├── local.settings-example.json ├── hello │ └── function.json ├── host.json ├── readme.md └── rserver.R ├── CODE_OF_CONDUCT.md ├── LICENSE ├── README.md ├── SECURITY.md └── .gitignore /Rust/.gitignore: -------------------------------------------------------------------------------- 1 | /target 2 | **/*.rs.bk 3 | -------------------------------------------------------------------------------- /go/GoCustomHandlers: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Azure-Samples/functions-custom-handlers/HEAD/go/GoCustomHandlers -------------------------------------------------------------------------------- /R/local.settings-example.json: -------------------------------------------------------------------------------- 1 | { 2 | "IsEncrypted": false, 3 | "Values": { 4 | "AzureWebJobsStorage": "YOUR_STORAGE_CONNECTION_STRING" 5 | } 6 | } -------------------------------------------------------------------------------- /Rust/local.settings-example.json: -------------------------------------------------------------------------------- 1 | { 2 | "IsEncrypted": false, 3 | "Values": { 4 | "AzureWebJobsStorage": "YOUR_STORAGE_CONNECTION_STRING" 5 | } 6 | } -------------------------------------------------------------------------------- /Rust/Cargo.toml: -------------------------------------------------------------------------------- 1 | [package] 2 | name = "hello-world-server" 3 | version = "0.1.0" 4 | authors = ["paulbatum"] 5 | edition = "2018" 6 | 7 | [dependencies] 8 | hyper = "0.13.3" 9 | tokio = { version = "0.2.13", features = ["macros"] } -------------------------------------------------------------------------------- /go/local.settings-example.json: -------------------------------------------------------------------------------- 1 | { 2 | "IsEncrypted": false, 3 | "Values": { 4 | "FUNCTIONS_WORKER_RUNTIME": "custom", 5 | "AzureWebJobsStorage": "UseDevelopmentStorage=true", 6 | "FUNCTIONS_CUSTOMHANDLER_PORT": "8080" 7 | }, 8 | "ConnectionStrings": {} 9 | } -------------------------------------------------------------------------------- /go/host.json: -------------------------------------------------------------------------------- 1 | { 2 | "version": "2.0", 3 | "extensionBundle": { 4 | "id": "Microsoft.Azure.Functions.ExtensionBundle", 5 | "version": "[4.0.0, 5.0.0)" 6 | }, 7 | "customHandler": { 8 | "description": { 9 | "defaultExecutablePath": "GoCustomHandlers" 10 | }, 11 | "enableProxyingHttpRequest":true 12 | } 13 | } -------------------------------------------------------------------------------- /R/hello/function.json: -------------------------------------------------------------------------------- 1 | { 2 | "bindings": [ 3 | { 4 | "type": "httpTrigger", 5 | "direction": "in", 6 | "name": "req", 7 | "methods": [ 8 | "get", 9 | "post" 10 | ] 11 | }, 12 | { 13 | "type": "http", 14 | "direction": "out", 15 | "name": "res" 16 | } 17 | ] 18 | } -------------------------------------------------------------------------------- /Rust/host.json: -------------------------------------------------------------------------------- 1 | { 2 | "version": "2.0", 3 | "extensionBundle": { 4 | "id": "Microsoft.Azure.Functions.ExtensionBundle", 5 | "version": "[1.*, 2.0.0)" 6 | }, 7 | "customHandler": { 8 | "description": { 9 | "defaultExecutablePath": "target/debug/hello-world-server.exe" 10 | }, 11 | "enableForwardingHttpRequest":true 12 | } 13 | } -------------------------------------------------------------------------------- /R/host.json: -------------------------------------------------------------------------------- 1 | { 2 | "version": "2.0", 3 | "extensionBundle": { 4 | "id": "Microsoft.Azure.Functions.ExtensionBundle", 5 | "version": "[1.*, 2.0.0)" 6 | }, 7 | "customHandler": { 8 | "description": { 9 | "defaultExecutablePath": "RScript", 10 | "arguments": ["rserver.R"] 11 | }, 12 | "enableForwardingHttpRequest":true 13 | } 14 | } -------------------------------------------------------------------------------- /go/SimpleHttpTrigger/function.json: -------------------------------------------------------------------------------- 1 | { 2 | "bindings": [ 3 | { 4 | "type": "httpTrigger", 5 | "direction": "in", 6 | "name": "req", 7 | "methods": [ 8 | "get", 9 | "post" 10 | ] 11 | }, 12 | { 13 | "type": "http", 14 | "direction": "out", 15 | "name": "res" 16 | } 17 | ] 18 | } -------------------------------------------------------------------------------- /Rust/SimpleHttpTrigger/function.json: -------------------------------------------------------------------------------- 1 | { 2 | "bindings": [ 3 | { 4 | "type": "httpTrigger", 5 | "direction": "in", 6 | "name": "req", 7 | "methods": [ 8 | "get", 9 | "post" 10 | ] 11 | }, 12 | { 13 | "type": "http", 14 | "direction": "out", 15 | "name": "res" 16 | } 17 | ] 18 | } -------------------------------------------------------------------------------- /go/HttpTriggerWithStreaming/function.json: -------------------------------------------------------------------------------- 1 | { 2 | "bindings": [ 3 | { 4 | "type": "httpTrigger", 5 | "direction": "in", 6 | "name": "req", 7 | "methods": [ 8 | "get", 9 | "post" 10 | ] 11 | }, 12 | { 13 | "type": "http", 14 | "direction": "out", 15 | "name": "res" 16 | } 17 | ] 18 | } -------------------------------------------------------------------------------- /go/QueueTrigger/function.json: -------------------------------------------------------------------------------- 1 | { 2 | "bindings": [ 3 | { 4 | "name": "myQueueItem", 5 | "type": "queueTrigger", 6 | "direction": "in", 7 | "queueName": "test-input", 8 | "connection": "AzureWebJobsStorage" 9 | }, 10 | { 11 | "name": "$return", 12 | "type": "queue", 13 | "direction": "out", 14 | "queueName": "test-output", 15 | "connection": "AzureWebJobsStorage" 16 | } 17 | ] 18 | } -------------------------------------------------------------------------------- /CODE_OF_CONDUCT.md: -------------------------------------------------------------------------------- 1 | # Microsoft Open Source Code of Conduct 2 | 3 | This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). 4 | 5 | Resources: 6 | 7 | - [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/) 8 | - [Microsoft Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) 9 | - Contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with questions or concerns 10 | -------------------------------------------------------------------------------- /go/BlobTrigger/function.json: -------------------------------------------------------------------------------- 1 | { 2 | "bindings" : [ { 3 | "type" : "blobTrigger", 4 | "direction" : "in", 5 | "name" : "triggerBlob", 6 | "path" : "test-triggerinput-httpworker/{name}", 7 | "dataType" : "binary", 8 | "connection" : "AzureWebJobsStorage" 9 | }, 10 | { 11 | "type" : "blob", 12 | "direction" : "out", 13 | "name" : "$return", 14 | "path" : "test-output-httpworker/{name}", 15 | "dataType" : "binary", 16 | "connection" : "AzureWebJobsStorage" 17 | } ] 18 | } -------------------------------------------------------------------------------- /go/QueueTriggerWithOutputs/function.json: -------------------------------------------------------------------------------- 1 | { 2 | "bindings": [ 3 | { 4 | "name": "myQueueItem", 5 | "type": "queueTrigger", 6 | "direction": "in", 7 | "queueName": "test-inputmultiout", 8 | "connection": "AzureWebJobsStorage" 9 | }, 10 | { 11 | "name": "$return", 12 | "type": "queue", 13 | "direction": "out", 14 | "queueName": "test-output", 15 | "connection": "AzureWebJobsStorage" 16 | }, 17 | { 18 | "name": "output1", 19 | "type": "queue", 20 | "direction": "out", 21 | "queueName": "test-output1", 22 | "connection": "AzureWebJobsStorage" 23 | } 24 | ] 25 | } -------------------------------------------------------------------------------- /R/readme.md: -------------------------------------------------------------------------------- 1 | 2 | # Azure Functions custom handler in R 3 | 4 | The samples available in this folder demonstrate how to implement a [custom handler](https://docs.microsoft.com/azure/azure-functions/functions-custom-handlers) in R. 5 | 6 | Example functions featured in this repo include: 7 | 8 | | Name | Trigger | Input | Output | 9 | |------|---------|-------|--------| 10 | | [hello](../../../tree/master/R/hello) | HTTP | n/a | na/ | 11 | 12 | ## Configuration 13 | 14 | The *local.settings-example.json* is provided to show what values the app is expecting to read from environment variables. Make a copy of *local.settings-example.json* and rename it *local.settings.json* and replace any values that begin with "**YOUR_**" with your values. 15 | -------------------------------------------------------------------------------- /Rust/README.md: -------------------------------------------------------------------------------- 1 | # Azure Functions custom handler in Rust 2 | 3 | The samples available in this folder demonstrate how to implement a [custom handler](https://docs.microsoft.com/azure/azure-functions/functions-custom-handlers) in Rust. 4 | 5 | Example functions featured in this repo include: 6 | 7 | | Name | Trigger | Input | Output | 8 | |------|---------|-------|--------| 9 | | [SimpleHttpTrigger](../../../tree/master/Rust/SimpleHttpTrigger) | HTTP | n/a | n/a | 10 | 11 | ## Configuration 12 | 13 | The *local.settings-example.json* is provided to show what values the app is expecting to read from environment variables. Make a copy of *local.settings-example.json* and rename it *local.settings.json* and replace any values that begin with "**YOUR_**" with your values. 14 | 15 | ## Pre-reqs 16 | 17 | - Rust : https://www.rust-lang.org/learn/get-started 18 | - Azure Functions Core Tools 19 | 20 | ## Build + Run 21 | 22 | - run `cargo build` 23 | - run `func host start` 24 | 25 | **NOTE**: if running on a non-Windows platform you will have to remove ".exe" from the `defaultExecutablePath` in the `host.json`. 26 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) Microsoft Corporation. 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 | -------------------------------------------------------------------------------- /Rust/src/main.rs: -------------------------------------------------------------------------------- 1 | use hyper::service::{make_service_fn, service_fn}; 2 | use hyper::{Body, Error, Request, Response, Server}; 3 | use hyper::{Method, StatusCode}; 4 | use std::convert::Infallible; 5 | use std::env; 6 | 7 | async fn handler(req: Request) -> Result, Infallible> { 8 | let builder = Response::builder(); 9 | 10 | let response = match (req.method(), req.uri().path()) { 11 | (&Method::GET, "/api/SimpleHttpTrigger") => builder 12 | .body(Body::from("Hello World from rust Custom Handler")) 13 | .unwrap(), 14 | (&Method::POST, "/echo") => builder.body(req.into_body()).unwrap(), 15 | _ => builder 16 | .status(StatusCode::NOT_FOUND) 17 | .body(Body::from("")) 18 | .unwrap(), 19 | }; 20 | 21 | Ok(response) 22 | } 23 | 24 | #[tokio::main] 25 | async fn main() -> Result<(), Error> { 26 | let port_key = "FUNCTIONS_CUSTOMHANDLER_PORT"; 27 | let port: u16 = match env::var(port_key) { 28 | Ok(val) => val.parse().expect("Custom Handler port is not a number!"), 29 | Err(_) => 3000, 30 | }; 31 | let addr = ([127, 0, 0, 1], port).into(); 32 | 33 | let server = Server::bind(&addr).serve(make_service_fn(|_| async move { 34 | Ok::<_, Infallible>(service_fn(handler)) 35 | })); 36 | 37 | println!("Listening on http://{}", addr); 38 | 39 | server.await 40 | } 41 | -------------------------------------------------------------------------------- /go/readme.md: -------------------------------------------------------------------------------- 1 | 2 | # Azure Functions custom handler in Go 3 | 4 | The samples available in this folder demonstrate how to implement a [custom handler](https://docs.microsoft.com/azure/azure-functions/functions-custom-handlers) in Go. 5 | 6 | Example functions featured in this repo include: 7 | 8 | | Name | Trigger | Input | Output | 9 | |------|---------|-------|--------| 10 | | [BlobTrigger](../../../tree/master/go/BlobTrigger) | Blob Storage | Blob Storage | Blob Storage| 11 | | [HttpTriggerWithStreaming](../../../tree/master/go/HttpTriggerWithStreaming) | HTTP | n/a | n/a | 12 | | [QueueTrigger](../../../tree/master/go/QueueTrigger) | Queue Storage | Queue Storage | Queue Storage | 13 | | [QueueTriggerWithOutputs](../../../tree/master/go/QueueTriggerWithOutputs) | Queue Storage | Queue Storage | Queue Storage | 14 | | [SimpleHttpTrigger](../../../tree/master/go/SimpleHttpTrigger) | HTTP | n/a | n/a | 15 | 16 | ## Configuration 17 | 18 | The *local.settings-example.json* is provided to show what values the app is expecting to read from environment variables. Make a copy of *local.settings-example.json* and rename it *local.settings.json* and replace any values that begin with "**YOUR_**" with your values. 19 | 20 | ## Building the go Executable 21 | 22 | Run the following in the root of the sample (where your `GoCustomHandlers.go` file is located). 23 | 24 | ``` 25 | go build -o GoCustomHandlers.exe GoCustomHandlers.go 26 | ``` 27 | 28 | If you need a Linux executable (and are working in a Windows environment) you can use the following: 29 | 30 | ``` 31 | $env:GOOS = "linux" 32 | $env:GOARCH = "amd64" 33 | cd GoCustomHandlers 34 | go build -o GoCustomHandlers GoCustomHandlers.go 35 | ``` 36 | -------------------------------------------------------------------------------- /R/rserver.R: -------------------------------------------------------------------------------- 1 | library(httpuv) 2 | 3 | PORTEnv <- Sys.getenv("FUNCTIONS_CUSTOMHANDLER_PORT") 4 | PORT = strtoi(PORTEnv , base = 0L) 5 | 6 | http_not_found <- list( 7 | status=404, 8 | body='404 Not Found' 9 | ) 10 | http_method_not_allowed <- list( 11 | status=405, 12 | body='405 Method Not Allowed' 13 | ) 14 | 15 | hello_handler <- list( 16 | GET = function (request) list(body="Hello world") 17 | # POST = function (request) { ... } 18 | ) 19 | 20 | routes <- list( 21 | '/api/hello' = hello_handler, 22 | # Required by App Engine. 23 | '/_ah/health' = list( 24 | GET = function (request) list() 25 | ) 26 | ) 27 | 28 | router <- function (routes, request) { 29 | # Pick the right handler for this path and method. 30 | # Respond with 404s and 405s if the handler isn't found. 31 | if (!request$PATH_INFO %in% names(routes)) { 32 | return(http_not_found) 33 | } 34 | path_handler <- routes[[request$PATH_INFO]] 35 | 36 | if (!request$REQUEST_METHOD %in% names(path_handler)) { 37 | return(http_method_not_allowed) 38 | } 39 | method_handler <- path_handler[[request$REQUEST_METHOD]] 40 | 41 | return(method_handler(request)) 42 | } 43 | 44 | app <- list( 45 | call = function (request) { 46 | response <- router(routes, request) 47 | 48 | # Provide some defaults for the response 49 | # to make handler code simpler. 50 | if (!'status' %in% names(response)) { 51 | response$status <- 200 52 | } 53 | if (!'headers' %in% names(response)) { 54 | response$headers <- list() 55 | } 56 | if (!'Content-Type' %in% names(response$headers)) { 57 | response$headers[['Content-Type']] <- 'text/plain' 58 | } 59 | 60 | return(response) 61 | } 62 | ) 63 | 64 | cat(paste0("Server listening on :", PORT, "...\n")) 65 | runServer("0.0.0.0", PORT, app) -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Azure Functions custom handlers (preview) 2 | 3 | Every Functions app is executed by a language-specific handler. While Azure Functions supports many [language handlers](https://docs.microsoft.com/azure/azure-functions/supported-languages) by default, there are cases where you may want additional control over the app execution environment. Custom handlers give you this additional control. 4 | 5 | Custom handlers are lightweight web servers that receive events from the Functions host. Any language that supports HTTP primitives can implement a custom handler. 6 | 7 | Custom handlers are best suited for situations where you want to: 8 | 9 | - Implement a Functions app in a language beyond the officially supported languages 10 | - Implement a Functions app in a language version or runtime not supported by default 11 | - Have granular control over the app execution environment 12 | 13 | With custom handlers, all [triggers and input and output bindings](https://docs.microsoft.com/azure/azure-functions/functions-triggers-bindings) are supported via [extension bundles](https://docs.microsoft.com/azure/azure-functions/functions-bindings-register). 14 | 15 | Read more [about custom handlers in detail](https://docs.microsoft.com/azure/azure-functions/functions-custom-handlers). 16 | 17 | ## Samples 18 | 19 | The following samples demonstrate how to implement a custom handler in the following languages: 20 | 21 | - [C#](https://github.com/Azure-Samples/functions-custom-handlers/tree/master/CSharp) 22 | - [Go](https://github.com/Azure-Samples/functions-custom-handlers/tree/master/go) 23 | - [Java](https://github.com/Azure-Samples/functions-custom-handlers/tree/master/Java) 24 | - [JavaScript](https://github.com/Azure-Samples/functions-custom-handlers/tree/master/node) 25 | - [R](https://github.com/Azure-Samples/functions-custom-handlers/tree/master/R) 26 | - [Rust](https://github.com/Azure-Samples/functions-custom-handlers/tree/master/Rust) 27 | 28 | ## Docker 29 | 30 | Following is an example dockerfile using azure functions node base image 31 | 32 | ``` 33 | # To enable ssh & remote debugging on app service change the base image to the one below 34 | # FROM mcr.microsoft.com/azure-functions/node:2.0-appservice 35 | FROM mcr.microsoft.com/azure-functions/node:2.0 36 | 37 | ENV AzureWebJobsScriptRoot=/home/site/wwwroot \ 38 | AzureFunctionsJobHost__Logging__Console__IsEnabled=true 39 | 40 | COPY . /home/site/wwwroot 41 | 42 | RUN cd /home/site/wwwroot 43 | 44 | ``` 45 | 46 | Copy any of the samples to the directory where you have dockerfile and build an image -------------------------------------------------------------------------------- /SECURITY.md: -------------------------------------------------------------------------------- 1 | 2 | 3 | ## Security 4 | 5 | Microsoft takes the security of our software products and services seriously, which includes all source code repositories managed through our GitHub organizations, which include [Microsoft](https://github.com/Microsoft), [Azure](https://github.com/Azure), [DotNet](https://github.com/dotnet), [AspNet](https://github.com/aspnet), [Xamarin](https://github.com/xamarin), and [our GitHub organizations](https://opensource.microsoft.com/). 6 | 7 | If you believe you have found a security vulnerability in any Microsoft-owned repository that meets Microsoft's [Microsoft's definition of a security vulnerability](https://docs.microsoft.com/en-us/previous-versions/tn-archive/cc751383(v=technet.10)) of a security vulnerability, please report it to us as described below. 8 | 9 | ## Reporting Security Issues 10 | 11 | **Please do not report security vulnerabilities through public GitHub issues.** 12 | 13 | Instead, please report them to the Microsoft Security Response Center (MSRC) at [https://msrc.microsoft.com/create-report](https://msrc.microsoft.com/create-report). 14 | 15 | If you prefer to submit without logging in, send email to [secure@microsoft.com](mailto:secure@microsoft.com). If possible, encrypt your message with our PGP key; please download it from the the [Microsoft Security Response Center PGP Key page](https://www.microsoft.com/en-us/msrc/pgp-key-msrc). 16 | 17 | You should receive a response within 24 hours. If for some reason you do not, please follow up via email to ensure we received your original message. Additional information can be found at [microsoft.com/msrc](https://www.microsoft.com/msrc). 18 | 19 | Please include the requested information listed below (as much as you can provide) to help us better understand the nature and scope of the possible issue: 20 | 21 | * Type of issue (e.g. buffer overflow, SQL injection, cross-site scripting, etc.) 22 | * Full paths of source file(s) related to the manifestation of the issue 23 | * The location of the affected source code (tag/branch/commit or direct URL) 24 | * Any special configuration required to reproduce the issue 25 | * Step-by-step instructions to reproduce the issue 26 | * Proof-of-concept or exploit code (if possible) 27 | * Impact of the issue, including how an attacker might exploit the issue 28 | 29 | This information will help us triage your report more quickly. 30 | 31 | If you are reporting for a bug bounty, more complete reports can contribute to a higher bounty award. Please visit our [Microsoft Bug Bounty Program](https://microsoft.com/msrc/bounty) page for more details about our active programs. 32 | 33 | ## Preferred Languages 34 | 35 | We prefer all communications to be in English. 36 | 37 | ## Policy 38 | 39 | Microsoft follows the principle of [Coordinated Vulnerability Disclosure](https://www.microsoft.com/en-us/msrc/cvd). 40 | 41 | 42 | -------------------------------------------------------------------------------- /go/GoCustomHandlers.go: -------------------------------------------------------------------------------- 1 | package main 2 | 3 | import ( 4 | "encoding/json" 5 | "fmt" 6 | "log" 7 | "net/http" 8 | "os" 9 | "time" 10 | ) 11 | 12 | type InvokeRequest struct { 13 | Data map[string]json.RawMessage 14 | Metadata map[string]interface{} 15 | } 16 | 17 | type InvokeResponse struct { 18 | Outputs map[string]interface{} 19 | Logs []string 20 | ReturnValue interface{} 21 | } 22 | 23 | func queueTriggerHandler(w http.ResponseWriter, r *http.Request) { 24 | var invokeReq InvokeRequest 25 | d := json.NewDecoder(r.Body) 26 | decodeErr := d.Decode(&invokeReq) 27 | if decodeErr != nil { 28 | http.Error(w, decodeErr.Error(), http.StatusBadRequest) 29 | return 30 | } 31 | fmt.Println("The JSON data is:invokeReq metadata......") 32 | fmt.Println(invokeReq.Metadata) 33 | fmt.Println("The JSON data is:invokeReq data......") 34 | fmt.Println(invokeReq.Data) 35 | 36 | returnValue := "HelloWorld" 37 | invokeResponse := InvokeResponse{Logs: []string{"test log1", "test log2"}, ReturnValue: returnValue} 38 | 39 | js, err := json.Marshal(invokeResponse) 40 | if err != nil { 41 | http.Error(w, err.Error(), http.StatusInternalServerError) 42 | return 43 | } 44 | 45 | w.Header().Set("Content-Type", "application/json") 46 | w.Write(js) 47 | } 48 | 49 | func blobTriggerHandler(w http.ResponseWriter, r *http.Request) { 50 | var invokeReq InvokeRequest 51 | d := json.NewDecoder(r.Body) 52 | decodeErr := d.Decode(&invokeReq) 53 | if decodeErr != nil { 54 | // bad JSON or unrecognized json field 55 | http.Error(w, decodeErr.Error(), http.StatusBadRequest) 56 | return 57 | } 58 | fmt.Println("The JSON data is:invokeReq metadata......") 59 | fmt.Println(invokeReq.Metadata) 60 | 61 | returnValue := invokeReq.Data["triggerBlob"] 62 | invokeResponse := InvokeResponse{Logs: []string{"test log1", "test log2"}, ReturnValue: returnValue} 63 | 64 | js, err := json.Marshal(invokeResponse) 65 | if err != nil { 66 | http.Error(w, err.Error(), http.StatusInternalServerError) 67 | return 68 | } 69 | 70 | w.Header().Set("Content-Type", "application/json") 71 | w.Write(js) 72 | } 73 | 74 | func queueTriggerWithOutputsHandler(w http.ResponseWriter, r *http.Request) { 75 | var invokeReq InvokeRequest 76 | d := json.NewDecoder(r.Body) 77 | decodeErr := d.Decode(&invokeReq) 78 | if decodeErr != nil { 79 | // bad JSON or unrecognized json field 80 | http.Error(w, decodeErr.Error(), http.StatusBadRequest) 81 | return 82 | } 83 | fmt.Println("The JSON data is:invokeReq metadata......") 84 | fmt.Println(invokeReq.Metadata) 85 | fmt.Println("The JSON data is:invokeReq data......") 86 | fmt.Println(invokeReq.Data) 87 | 88 | returnValue := 100 89 | outputs := make(map[string]interface{}) 90 | outputs["output1"] = "output from go" 91 | 92 | invokeResponse := InvokeResponse{outputs, []string{"test log1", "test log2"}, returnValue} 93 | 94 | js, err := json.Marshal(invokeResponse) 95 | if err != nil { 96 | http.Error(w, err.Error(), http.StatusInternalServerError) 97 | return 98 | } 99 | 100 | w.Header().Set("Content-Type", "application/json") 101 | w.Write(js) 102 | } 103 | 104 | func simpleHttpTriggerHandler(w http.ResponseWriter, r *http.Request) { 105 | t := time.Now() 106 | fmt.Println(t.Month()) 107 | fmt.Println(t.Day()) 108 | fmt.Println(t.Year()) 109 | ua := r.Header.Get("User-Agent") 110 | fmt.Printf("user agent is: %s \n", ua) 111 | invocationid := r.Header.Get("X-Azure-Functions-InvocationId") 112 | fmt.Printf("invocationid is: %s \n", invocationid) 113 | 114 | queryParams := r.URL.Query() 115 | 116 | for k, v := range queryParams { 117 | fmt.Println("k:", k, "v:", v) 118 | } 119 | 120 | w.Write([]byte("Hello World from go worker")) 121 | } 122 | 123 | func httpTriggerWithStreaming(w http.ResponseWriter, r *http.Request) { 124 | name := r.URL.Query().Get("name") 125 | if name == "" { 126 | name = "world" 127 | } 128 | 129 | // Ensure we can flush. 130 | flusher, ok := w.(http.Flusher) 131 | if !ok { 132 | http.Error(w, "streaming unsupported", http.StatusInternalServerError) 133 | return 134 | } 135 | 136 | w.Header().Set("Content-Type", "text/event-stream") 137 | w.Header().Set("Cache-Control", "no-store") 138 | w.Header().Set("X-Content-Type-Options", "nosniff") 139 | w.WriteHeader(http.StatusOK) 140 | 141 | // Start a JSON array. 142 | fmt.Fprint(w, "[{\"chunk\":1,\"message\":\"Hello ") 143 | flusher.Flush() 144 | 145 | // Simulate work and stream more. 146 | time.Sleep(2000 * time.Millisecond) 147 | fmt.Fprintf(w, "{\"chunk\":2,\"message\":\"%s\"}", name) 148 | flusher.Flush() 149 | 150 | time.Sleep(1000 * time.Millisecond) 151 | fmt.Fprint(w, ", {\"chunk\":3,\"status\":\"complete\"}]") 152 | flusher.Flush() 153 | 154 | return 155 | } 156 | 157 | func main() { 158 | customHandlerPort, exists := os.LookupEnv("FUNCTIONS_CUSTOMHANDLER_PORT") 159 | if exists { 160 | fmt.Println("FUNCTIONS_CUSTOMHANDLER_PORT: " + customHandlerPort) 161 | } 162 | mux := http.NewServeMux() 163 | mux.HandleFunc("/QueueTrigger", queueTriggerHandler) 164 | mux.HandleFunc("/BlobTrigger", blobTriggerHandler) 165 | mux.HandleFunc("/QueueTriggerWithOutputs", queueTriggerWithOutputsHandler) 166 | mux.HandleFunc("/api/SimpleHttpTrigger", simpleHttpTriggerHandler) 167 | mux.HandleFunc("/api/HttpTriggerWithStreaming", httpTriggerWithStreaming) 168 | fmt.Println("Go server Listening...on FUNCTIONS_CUSTOMHANDLER_PORT:", customHandlerPort) 169 | log.Fatal(http.ListenAndServe(":"+customHandlerPort, mux)) 170 | } 171 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | ## Ignore Visual Studio temporary files, build results, and 2 | ## files generated by popular Visual Studio add-ons. 3 | ## 4 | ## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore 5 | 6 | # User-specific files 7 | *.rsuser 8 | *.suo 9 | *.user 10 | *.userosscache 11 | *.sln.docstates 12 | 13 | # Ignore VS Code settings and workspace files 14 | .vscode/ 15 | *.code-workspace 16 | 17 | # User-specific files (MonoDevelop/Xamarin Studio) 18 | *.userprefs 19 | 20 | # Mono auto generated files 21 | mono_crash.* 22 | 23 | # Build results 24 | [Dd]ebug/ 25 | [Dd]ebugPublic/ 26 | [Rr]elease/ 27 | [Rr]eleases/ 28 | x64/ 29 | x86/ 30 | [Aa][Rr][Mm]/ 31 | [Aa][Rr][Mm]64/ 32 | bld/ 33 | [Bb]in/ 34 | [Oo]bj/ 35 | 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