adding login action

action.yml

@@ -0,0 +1,13 @@
+# Login to Azure subscription
+name: 'Login Azure'
+description: 'Login Azure wraps the az login, allowing for Azure actions to log into Azure'
+inputs: 
+  creds:
+    description: 'Paste output of `az ad sp create-for-rbac` as value of secret variable: AZURE_CREDENTIALS'
+    required: true
+branding:
+  icon: 'login.svg'
+  color: 'blue'
+runs:
+  using: 'node12'
+  main: 'lib/main.js'

lib/main.js

@@ -0,0 +1,64 @@
+"use strict";
+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 core = __importStar(require("@actions/core"));
+const exec = __importStar(require("@actions/exec"));
+const io = __importStar(require("@actions/io"));
+const actions_secret_parser_1 = require("actions-secret-parser");
+var azPath;
+function main() {
+    return __awaiter(this, void 0, void 0, function* () {
+        try {
+            azPath = yield io.which("az", true);
+            yield executeAzCliCommand("--version");
+            let creds = core.getInput('creds', { required: true });
+            let secrets = new actions_secret_parser_1.SecretParser(creds, actions_secret_parser_1.FormatType.JSON);
+            let servicePrincipalId = secrets.getSecret("$.clientId", false);
+            let servicePrincipalKey = secrets.getSecret("$.clientSecret", true);
+            let tenantId = secrets.getSecret("$.tenantId", false);
+            let subscriptionId = secrets.getSecret("$.subscriptionId", false);
+            if (!servicePrincipalId || !servicePrincipalKey || !tenantId || !subscriptionId) {
+                throw new Error("Not all values are present in the creds object. Ensure clientId, clientSecret, tenantId and subscriptionId are supplied");
+            }
+            yield executeAzCliCommand(`login --service-principal -u "${servicePrincipalId}" -p "${servicePrincipalKey}" --tenant "${tenantId}"`);
+            yield executeAzCliCommand(`account set --subscription "${subscriptionId}"`);
+            console.log("Login successful.");
+        }
+        catch (error) {
+            console.log("Login failed. Please check the credentials.");
+            core.setFailed(error);
+        }
+    });
+}
+function executeAzCliCommand(command) {
+    return __awaiter(this, void 0, void 0, function* () {
+        let stderr = '';
+        let code = yield exec.exec(`"${azPath}" ${command}`, [], {
+            failOnStdErr: true,
+            listeners: {
+                stderr: (data) => {
+                    stderr += data.toString();
+                }
+            }
+        });
+        if (code != 0) {
+            throw new Error(stderr);
+        }
+    });
+}
+main();

package.json

@@ -0,0 +1,22 @@
+{
+  "name": "login",
+  "version": "1.0.0",
+  "description": "Login Azure wraps the az login, allowing for Azure actions to log into Azure",
+  "main": "lib/main.js",
+  "scripts": {
+    "build": "tsc",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "Sumiran Aggarwal",
+  "license": "MIT",
+  "devDependencies": {
+    "@types/node": "^12.7.11",
+    "typescript": "^3.6.3"
+  },
+  "dependencies": {
+    "@actions/core": "^1.1.3",
+    "@actions/exec": "^1.0.1",
+    "@actions/io": "^1.0.1",
+    "actions-secret-parser": "^1.0.1"
+  }
+}

src/main.ts

@@ -0,0 +1,51 @@
+import * as core from '@actions/core';
+import * as exec from '@actions/exec';
+import * as io from '@actions/io';
+
+import { FormatType, SecretParser } from 'actions-secret-parser';
+
+var azPath: string;
+
+async function main() {
+    try{
+        azPath = await io.which("az", true);
+        await executeAzCliCommand("--version");
+
+        let creds = core.getInput('creds', { required: true });
+        let secrets = new SecretParser(creds, FormatType.JSON);
+        let servicePrincipalId = secrets.getSecret("$.clientId", false);
+        let servicePrincipalKey = secrets.getSecret("$.clientSecret", true);
+        let tenantId = secrets.getSecret("$.tenantId", false);
+        let subscriptionId = secrets.getSecret("$.subscriptionId", false);
+        if (!servicePrincipalId || !servicePrincipalKey || !tenantId || !subscriptionId) {
+            throw new Error("Not all values are present in the creds object. Ensure clientId, clientSecret, tenantId and subscriptionId are supplied");
+        }
+
+        await executeAzCliCommand(`login --service-principal -u "${servicePrincipalId}" -p "${servicePrincipalKey}" --tenant "${tenantId}"`);
+        await executeAzCliCommand(`account set --subscription "${subscriptionId}"`);
+        console.log("Login successful.");    
+    } catch (error) {
+        console.log("Login failed. Please check the credentials.");
+        core.setFailed(error);
+    }
+}
+
+async function executeAzCliCommand(command: string) {
+    let stderr = '';
+
+    let code = await exec.exec(`"${azPath}" ${command}`, [],  {
+        failOnStdErr: true,
+        listeners: {
+            stderr: (data: Buffer) => {
+              stderr += data.toString();
+            }
+        }
+    }); 
+
+    if(code != 0) {
+        throw new Error(stderr);
+    }
+}
+
+
+main();

tsconfig.json

@@ -0,0 +1,60 @@
+{
+  "compilerOptions": {
+    /* Basic Options */
+    "target": "es6",                          /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'. */
+    "module": "commonjs",                     /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
+    // "lib": [],                             /* Specify library files to be included in the compilation. */
+    // "allowJs": true,                       /* Allow javascript files to be compiled. */
+    // "checkJs": true,                       /* Report errors in .js files. */
+    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
+    // "declaration": true,                   /* Generates corresponding '.d.ts' file. */
+    // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
+    // "sourceMap": true,                     /* Generates corresponding '.map' file. */
+    // "outFile": "./",                       /* Concatenate and emit output to single file. */
+    "outDir": "./lib",                        /* Redirect output structure to the directory. */
+    "rootDir": "./src",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    // "composite": true,                     /* Enable project compilation */
+    // "removeComments": true,                /* Do not emit comments to output. */
+    // "noEmit": true,                        /* Do not emit outputs. */
+    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
+    // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+    // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+
+    /* Strict Type-Checking Options */
+    "strict": false,                           /* Enable all strict type-checking options. */
+    // "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,              /* Enable strict null checks. */
+    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
+    // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
+    // "strictPropertyInitialization": true,  /* Enable strict checking of property initialization in classes. */
+    // "noImplicitThis": true,                /* Raise error on 'this' expressions with an implied 'any' type. */
+    // "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
+
+    /* Additional Checks */
+    // "noUnusedLocals": true,                /* Report errors on unused locals. */
+    // "noUnusedParameters": true,            /* Report errors on unused parameters. */
+    // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
+    // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
+
+    /* Module Resolution Options */
+    // "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
+    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
+    // "typeRoots": [],                       /* List of folders to include type definitions from. */
+    // "types": [],                           /* Type declaration files to be included in compilation. */
+    // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    "esModuleInterop": true                   /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
+
+    /* Source Map Options */
+    // "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+    // "mapRoot": "",                         /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
+    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+    /* Experimental Options */
+    // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
+    // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
+  }
+}