Set user agent for Azure/CLI action (#122)

* set user agent for azure cli action

* remove version

* encode user repo with hash

* compile

* reset AZURE_HTTP_USER_AGENT

src/main.ts

@@ -3,6 +3,7 @@ import * as exec from '@actions/exec';
 import * as io from '@actions/io';
 import * as os from 'os';
 import * as path from 'path';
+import * as crypto from 'crypto';
 const util = require('util');
 const cpExec = util.promisify(require('child_process').exec);
 
@@ -10,8 +11,14 @@ import { createScriptFile, TEMP_DIRECTORY, NullOutstreamStringWritable, deleteFi
 
 const START_SCRIPT_EXECUTION_MARKER: string = "Starting script execution via docker image mcr.microsoft.com/azure-cli:";
 const AZ_CLI_VERSION_DEFAULT_VALUE = 'agentazcliversion'
+const prefix = !!process.env.AZURE_HTTP_USER_AGENT ? `${process.env.AZURE_HTTP_USER_AGENT}` : "";
 
 export async function main() {
+    let usrAgentRepo = crypto.createHash('sha256').update(`${process.env.GITHUB_REPOSITORY}`).digest('hex');
+    let actionName = 'AzureCLIAction';
+    let userAgentString = (!!prefix ? `${prefix}+` : '') + `GITHUBACTIONS/${actionName}_${usrAgentRepo}`;
+    core.exportVariable('AZURE_HTTP_USER_AGENT', userAgentString);
+
     var scriptFileName: string = '';
     const CONTAINER_NAME = `MICROSOFT_AZURE_CLI_${getCurrentTime()}_CONTAINER`;
     try {
@@ -83,6 +90,8 @@ export async function main() {
         await deleteFile(scriptFilePath);
         console.log("cleaning up container...");
         await executeDockerCommand(["rm", "--force", CONTAINER_NAME], true);
+        // Reset AZURE_HTTP_USER_AGENT
+        core.exportVariable('AZURE_HTTP_USER_AGENT', prefix);
     }
 };