Configurable api url to add support for github enterprise server (#464)

* Add github-api-url to workflow input

* Update readme

README.md

@@ -43,6 +43,11 @@ A Github Action to download assets from github release. It can download specifie
     # https://docs.github.com/en/actions/configuring-and-managing-workflows/creating-and-storing-encrypted-secrets
     # eg: token: ${{ secrets.MY_TOKEN }}
     token: ""
+
+    # The URL of the Github API, only use this input if you are using Github Enterprise
+    # Default: "https://api.github.com"
+    # Use http(s)://[hostname]/api/v3 to access the API for GitHub Enterprise Server
+    github-api-url: ""
 ```
 
 ## Scenarios

__tests__/main.test.ts

@@ -14,13 +14,14 @@ const outputFilePath = "./test-output"
 
 beforeEach(() => {
   const githubtoken = process.env.REPO_TOKEN || ""
+  const githubApiUrl = "https://api.github.com"
 
   const credentialHandler = new handlers.BearerCredentialHandler(
     githubtoken,
     false
   )
   httpClent = new thc.HttpClient("gh-api-client", [credentialHandler])
-  downloader = new ReleaseDownloader(httpClent)
+  downloader = new ReleaseDownloader(httpClent, githubApiUrl)
 
   nock("https://api.github.com")
     .get("/repos/robinraju/probable-potato/releases/latest")
@@ -61,6 +62,16 @@ beforeEach(() => {
   })
     .get("/repos/robinraju/probable-potato/releases/assets/66946551")
     .replyWithFile(200, __dirname + "/resource/assets/file_example.csv")
+
+  nock("https://my-gh-host.com/api/v3")
+    .get("/repos/my-enterprise/test-repo/releases/latest")
+    .reply(200, readFromFile("2-gh-enterprise.json"))
+
+  nock("https://my-gh-host.com/api/v3", {
+    reqheaders: {accept: "application/octet-stream"}
+  })
+    .get("/repos/my-enterprise/test-repo/releases/assets/66946546")
+    .replyWithFile(200, __dirname + "/resource/assets/test-1.txt")
 })
 
 afterEach(async () => {
@@ -156,3 +167,19 @@ test("Download a csv file with wildcard filename", async () => {
   const result = await downloader.download(downloadSettings)
   expect(result.length).toBe(1)
 }, 10000)
+
+test("Download file from Github Enterprise server", async () => {
+  downloader = new ReleaseDownloader(httpClent, "https://my-gh-host.com/api/v3")
+
+  const downloadSettings: IReleaseDownloadSettings = {
+    sourceRepoPath: "my-enterprise/test-repo",
+    isLatest: true,
+    tag: "",
+    fileName: "test-1.txt",
+    tarBall: false,
+    zipBall: false,
+    outFilePath: outputFilePath
+  }
+  const result = await downloader.download(downloadSettings)
+  expect(result.length).toBe(1)
+}, 10000)

__tests__/resource/2-gh-enterprise.json

@@ -0,0 +1,36 @@
+{
+    "url": "https://my-gh-host.com/api/v3/repos/my-enterprise/test-repo/releases/68092191",
+    "assets_url": "https://my-gh-host.com/api/v3/repos/my-enterprise/test-repo/releases/68092191/assets",
+    "upload_url": "https://my-gh-host.com/api/v3/repos/my-enterprise/test-repo/releases/68092191/assets{?name,label}",
+    "html_url": "https://my-gh-host.com/repos/my-enterprise/test-repo/releases/tag/1.0.1",
+    "id": 68092191,
+    "author": {},
+    "node_id": "RE_kwDOHahpL84EDwEf",
+    "tag_name": "1.0.1",
+    "target_commitish": "main",
+    "name": "v1.0.1",
+    "draft": false,
+    "prerelease": false,
+    "created_at": "2022-05-29T12:03:47Z",
+    "published_at": "2022-05-29T12:04:42Z",
+    "assets": [
+        {
+            "url": "https://my-gh-host.com/api/v3/repos/my-enterprise/test-repo/releases/assets/66946546",
+            "id": 66946546,
+            "node_id": "RA_kwDOHahpL84D_YXy",
+            "name": "test-1.txt",
+            "label": null,
+            "uploader": {},
+            "content_type": "text/plain",
+            "state": "uploaded",
+            "size": 7253,
+            "download_count": 56,
+            "created_at": "2022-05-29T12:08:23Z",
+            "updated_at": "2022-05-29T12:08:23Z",
+            "browser_download_url": "https://my-gh-host.com/api/v3/repos/my-enterprise/test-repo/releases/download/1.0.1/test-1.txt"
+        }
+    ],
+    "tarball_url": "https://my-gh-host.com/api/v3/repos/my-enterprise/test-repo/tarball/1.0.1",
+    "zipball_url": "https://my-gh-host.com/api/v3/repos/my-enterprise/test-repo/zipball/1.0.1",
+    "body": ""
+}

action.yml

@@ -34,6 +34,10 @@ inputs:
     description: "Github token to access private repos"
     default: ${{ github.token }}
     required: false
+  github-api-url:
+    description: "The URL of the Github API, only use this input if you are using Github Enterprise"
+    default: "https://api.github.com"
+    required: false
 runs:
   using: "node16"
   main: "dist/index.js"

src/main.ts

@@ -9,6 +9,7 @@ async function run(): Promise<void> {
   try {
     const downloadSettings = inputHelper.getInputs()
     const authToken = core.getInput("token")
+    const githubApiUrl = core.getInput("github-api-url")
 
     const credentialHandler = new handlers.BearerCredentialHandler(
       authToken,
@@ -18,7 +19,7 @@ async function run(): Promise<void> {
       credentialHandler
     ])
 
-    const downloader = new ReleaseDownloader(httpClient)
+    const downloader = new ReleaseDownloader(httpClient, githubApiUrl)
 
     const res: string[] = await downloader.download(downloadSettings)
     core.info(`Done: ${res}`)

src/release-downloader.ts

@@ -12,10 +12,11 @@ import {IReleaseDownloadSettings} from "./download-settings"
 export class ReleaseDownloader {
   private httpClient: thc.HttpClient
 
-  private _apiRoot = "https://api.github.com/repos"
+  private apiRoot: string
 
-  constructor(httpClient: thc.HttpClient) {
+  constructor(httpClient: thc.HttpClient, githubApiUrl: string) {
     this.httpClient = httpClient
+    this.apiRoot = githubApiUrl
   }
 
   async download(
@@ -53,7 +54,7 @@ export class ReleaseDownloader {
     const headers: IHeaders = {Accept: "application/vnd.github.v3+json"}
 
     const response = await this.httpClient.get(
-      `${this._apiRoot}/${repoPath}/releases/latest`,
+      `${this.apiRoot}/repos/${repoPath}/releases/latest`,
       headers
     )
 
@@ -89,7 +90,7 @@ export class ReleaseDownloader {
     const headers: IHeaders = {Accept: "application/vnd.github.v3+json"}
 
     const response = await this.httpClient.get(
-      `${this._apiRoot}/${repoPath}/releases/tags/${tag}`,
+      `${this.apiRoot}/repos/${repoPath}/releases/tags/${tag}`,
       headers
     )