Added setup-helm : Install helm binary

CONTRIBUTING.md

@@ -0,0 +1,13 @@
+# Contributing
+
+This project welcomes contributions and suggestions.  Most contributions require you to agree to a
+Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us
+the rights to use your contribution. For details, visit https://cla.opensource.microsoft.com.
+
+When you submit a pull request, a CLA bot will automatically determine whether you need to provide
+a CLA and decorate the PR appropriately (e.g., status check, comment). Simply follow the instructions
+provided by the bot. You will only need to do this once across all repos using our CLA.
+
+This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
+For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or
+contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.

README.md

@@ -1,3 +1,15 @@
+# Setup Helm
+#### Install a specific version of helm binary on the runner.
+
+Acceptable values are latest or any semantic version string like 1.15.0. Use this action in workflow to define which version of helm will be used.
+
+```yaml
+- uses: azure/setup-helm@v1
+  with:
+    version: '<version>' # default is latest stable
+  id: install
+```
+Refer to the action metadata file for details about all the inputs https://github.com/Azure/setup-helm/blob/master/action.yml
 
 # Contributing
 

action.yml

@@ -0,0 +1,15 @@
+name: 'Helm tool installer'
+description: 'Install a specific version of helm binary. Acceptable values are latest or any semantic version string like 1.15.0'
+inputs: 
+  version:
+    description: 'Version of helm'
+    required: true
+    default: 'latest'
+outputs:
+  helm-path:
+    description: 'Path to the cached helm binary'
+branding:
+  color: 'blue'
+runs:
+  using: 'node12'
+  main: 'lib/run.js'

lib/run.js

@@ -0,0 +1,125 @@
+"use strict";
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+    result["default"] = mod;
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const os = __importStar(require("os"));
+const path = __importStar(require("path"));
+const util = __importStar(require("util"));
+const fs = __importStar(require("fs"));
+const toolCache = __importStar(require("../node_modules/@actions/tool-cache"));
+const core = __importStar(require("../node_modules/@actions/core"));
+const helmToolName = 'helm';
+const stableHelmVersion = 'v2.14.1';
+const helmLatestReleaseUrl = 'https://api.github.com/repos/helm/helm/releases/latest';
+function getExecutableExtension() {
+    if (os.type().match(/^Win/)) {
+        return '.exe';
+    }
+    return '';
+}
+function getHelmDownloadURL(version) {
+    switch (os.type()) {
+        case 'Linux':
+            return util.format('https://get.helm.sh/helm-%s-linux-amd64.zip', version);
+        case 'Darwin':
+            return util.format('https://get.helm.sh/helm-%s-darwin-amd64.zip', version);
+        case 'Windows_NT':
+        default:
+            return util.format('https://get.helm.sh/helm-%s-windows-amd64.zip', version);
+    }
+}
+function getStableHelmVersion() {
+    return __awaiter(this, void 0, void 0, function* () {
+        return toolCache.downloadTool(helmLatestReleaseUrl).then((downloadPath) => {
+            const response = JSON.parse(fs.readFileSync(downloadPath, 'utf8').toString().trim());
+            if (!response.tag_name) {
+                return stableHelmVersion;
+            }
+            return response.tag_name;
+        }, (error) => {
+            core.debug(error);
+            core.warning(util.format("Failed to read latest kubectl version from stable.txt. From URL %s. Using default stable version %s", helmLatestReleaseUrl, stableHelmVersion));
+            return stableHelmVersion;
+        });
+    });
+}
+var walkSync = function (dir, filelist, fileToFind) {
+    var fs = fs || require('fs'), files = fs.readdirSync(dir);
+    filelist = filelist || [];
+    files.forEach(function (file) {
+        if (fs.statSync(path.join(dir, file)).isDirectory()) {
+            filelist = walkSync(path.join(dir, file), filelist, fileToFind);
+        }
+        else {
+            core.debug(file);
+            if (file == fileToFind) {
+                filelist.push(path.join(dir, file));
+            }
+        }
+    });
+    return filelist;
+};
+function downloadHelm(version) {
+    return __awaiter(this, void 0, void 0, function* () {
+        if (!version) {
+            version = yield getStableHelmVersion();
+        }
+        let cachedToolpath = toolCache.find(helmToolName, version);
+        if (!cachedToolpath) {
+            let helmDownloadPath;
+            try {
+                helmDownloadPath = yield toolCache.downloadTool(getHelmDownloadURL(version));
+            }
+            catch (exception) {
+                throw new Error(util.format("Failed to download Helm from location ", getHelmDownloadURL(version)));
+            }
+            fs.chmodSync(helmDownloadPath, '777');
+            const unzipedHelmPath = yield toolCache.extractZip(helmDownloadPath);
+            cachedToolpath = yield toolCache.cacheDir(unzipedHelmPath, helmToolName, version);
+        }
+        const helmpath = findHelm(cachedToolpath);
+        if (!helmpath) {
+        }
+        fs.chmodSync(helmpath, '777');
+        return helmpath;
+    });
+}
+function findHelm(rootFolder) {
+    fs.chmodSync(rootFolder, '777');
+    var filelist = [];
+    walkSync(rootFolder, filelist, helmToolName + getExecutableExtension());
+    if (!filelist) {
+        throw new Error(util.format("Helm executable not found in path ", rootFolder));
+    }
+    else {
+        return filelist[0];
+    }
+}
+function run() {
+    return __awaiter(this, void 0, void 0, function* () {
+        let version = core.getInput('version', { 'required': true });
+        if (version.toLocaleLowerCase() === 'latest') {
+            version = yield getStableHelmVersion();
+        }
+        let cachedPath = yield downloadHelm(version);
+        console.log(`Helm tool version: '${version}' has been cached at ${cachedPath}`);
+        core.setOutput('helm-path', cachedPath);
+    });
+}
+run().catch(core.setFailed);

package.json

@@ -0,0 +1,23 @@
+{
+    "name": "setuphelm",
+    "version": "0.0.0",
+    "private": true,
+    "description": "Setup helm",
+    "author": "Anumita Shenoy",
+    "license": "MIT",
+    "dependencies": {
+        "@actions/tool-cache": "1.1.2",
+        "@actions/io": "^1.0.0",
+        "@actions/core": "^1.0.0",
+        "@actions/exec": "^1.0.0"
+    },
+    "main": "lib/run.js",
+    "scripts": {
+        "build": "tsc",
+        "test": "echo \"Error: no test specified\" && exit 1"
+    },
+    "devDependencies": {
+        "@types/node": "^12.0.10",
+        "typescript": "^3.5.2"
+    }
+}