[Beta] Update Prefix Version in Auto-Attach Scenarios

src/agent/agentLoader.ts

@@ -6,7 +6,7 @@ import { Util } from "../shared/util";
 import { ConsoleWriter } from "./diagnostics/writers/consoleWriter";
 import { DiagnosticLogger } from "./diagnostics/diagnosticLogger";
 import { StatusLogger } from "./diagnostics/statusLogger";
-import { AgentResourceProviderType, DiagnosticMessageId, IDiagnosticLog, IDiagnosticLogger, NODE_JS_RUNTIME_MAJOR_VERSION } from "./types";
+import { AZURE_MONITOR_AUTO_ATTACH, DiagnosticMessageId, IDiagnosticLog, IDiagnosticLogger, NODE_JS_RUNTIME_MAJOR_VERSION } from "./types";
 import { AzureMonitorOpenTelemetryOptions } from "../types";
 import { useAzureMonitor } from "../main";
 
@@ -120,6 +120,8 @@ export class AgentLoader {
         }
         if (this._validate()) {
             try {
+                // Set environment variable to auto attach so the distro is aware of the attach state
+                process.env[AZURE_MONITOR_AUTO_ATTACH] = "true";
                 // Initialize Distro
                 this._options.azureMonitorExporterOptions.credential = this._aadCredential;
                 useAzureMonitor(this._options);
@@ -281,26 +283,4 @@ export class AgentLoader {
             return false;
         }
     }
-
-    protected _getVersionPrefix(rpType: AgentResourceProviderType): string {
-        let rp = "u"; // Default unknown
-        let os = "u"; // Default unknown
-        if (rpType === AgentResourceProviderType.aks) {
-            rp = "k";
-        }
-        else if (rpType === AgentResourceProviderType.appServices) {
-            rp = "a";
-        }
-        else if (rpType === AgentResourceProviderType.azureFunctions) {
-            rp = "f";
-        }
-        if (process.platform === 'win32') {
-            os = "w";
-        }
-        else if (process.platform === 'linux') {
-            os = "l";
-        }
-        return `${rp}${os}_`;
-    }
-
 }

src/agent/aksLoader.ts

@@ -7,8 +7,6 @@ import { DiagnosticLogger } from './diagnostics/diagnosticLogger';
 import { FileWriter } from "./diagnostics/writers/fileWriter";
 import { StatusLogger } from "./diagnostics/statusLogger";
 import { AgentLoader } from "./agentLoader";
-import { AgentResourceProviderType, AZURE_MONITOR_AGENT_PREFIX } from './types';
-
 
 export class AKSLoader extends AgentLoader {
 
@@ -50,7 +48,6 @@ export class AKSLoader extends AgentLoader {
                     }
                 )
             );
-            process.env[AZURE_MONITOR_AGENT_PREFIX] = this._getVersionPrefix(AgentResourceProviderType.aks);
         }
     }
 }

src/agent/appServicesLoader.ts

@@ -10,8 +10,6 @@ import { DiagnosticLogger } from './diagnostics/diagnosticLogger';
 import { FileWriter } from "./diagnostics/writers/fileWriter";
 import { StatusLogger } from "./diagnostics/statusLogger";
 import { AgentLoader } from "./agentLoader";
-import { AgentResourceProviderType, AZURE_MONITOR_AGENT_PREFIX } from './types';
-
 
 export class AppServicesLoader extends AgentLoader {
 
@@ -60,7 +58,6 @@ export class AppServicesLoader extends AgentLoader {
                     }
                 )
             );
-            process.env[AZURE_MONITOR_AGENT_PREFIX] = this._getVersionPrefix(AgentResourceProviderType.appServices);
         }
     }
 }

src/agent/azureFunctionsLoader.ts

@@ -6,7 +6,6 @@ import { AgentLoader } from "./agentLoader";
 import { DiagnosticLogger } from "./diagnostics/diagnosticLogger";
 import { StatusLogger } from "./diagnostics/statusLogger";
 import { AzureFunctionsWriter } from "./diagnostics/writers/azureFunctionsWriter";
-import { AgentResourceProviderType, AZURE_MONITOR_AGENT_PREFIX } from "./types";
 import { Attributes } from "@opentelemetry/api";
 import { SemanticResourceAttributes } from "@opentelemetry/semantic-conventions";
 
@@ -33,9 +32,6 @@ export class AzureFunctionsLoader extends AgentLoader {
             const writer = new AzureFunctionsWriter(this._instrumentationKey);
             this._diagnosticLogger = new DiagnosticLogger(this._instrumentationKey, writer);
             this._statusLogger = new StatusLogger(this._instrumentationKey, writer);
-            process.env[AZURE_MONITOR_AGENT_PREFIX] = this._getVersionPrefix(
-                AgentResourceProviderType.azureFunctions
-            );
         }
     }
 }

src/agent/types.ts

@@ -2,13 +2,7 @@ export const LOGGER_NAME = "applicationinsights.extension.diagnostics";
 export const LOGGER_LANGUAGE = "nodejs";
 export const NODE_JS_RUNTIME_MAJOR_VERSION = parseInt(process.versions.node.split('.')[0], 10);
 export const AZURE_APP_NAME = process.env.WEBSITE_SITE_NAME || 'unknown';
-export const AZURE_MONITOR_AGENT_PREFIX = "AZURE_MONITOR_AGENT_PREFIX";
-
-export enum AgentResourceProviderType {
-    appServices,
-    azureFunctions,
-    aks
-}
+export const AZURE_MONITOR_AUTO_ATTACH = "AZURE_MONITOR_AUTO_ATTACH";
 
 export interface IAgentLogger {
     log(message: any, ...optional: any[]): void;

test/unitTests/agent/agentLoader.tests.ts

@@ -89,6 +89,7 @@ describe("agent/agentLoader", () => {
         const diagnosticLoggerStub = sandbox.stub(agent["_diagnosticLogger"], "logMessage");
 
         const initAgent = agent.initialize();
+        assert.equal(process.env["AZURE_MONITOR_AUTO_ATTACH"], "true");
         assert.ok(diagnosticLoggerStub.calledOnce);
     });
 

test/unitTests/agent/aksLoader.tests.ts

@@ -40,9 +40,6 @@ describe("agent/AKSLoader", () => {
         // Loader is using correct diagnostics
         assert.equal(agent["_diagnosticLogger"], diagnosticLogger, "Wrong diagnosticLogger");
         assert.equal(agent["_statusLogger"], statusLogger, "Wrong statusLogger");
-        // Prefix Env variable should be set
-        assert.equal(process.env["AZURE_MONITOR_AGENT_PREFIX"].length, 3, "Missing prefix");
-        assert.ok(process.env["AZURE_MONITOR_AGENT_PREFIX"].startsWith, "k");
     });
 
     it("initialize", () => {

test/unitTests/agent/appServicesLoader.ts

@@ -43,18 +43,13 @@ describe("agent/AppServicesLoader", () => {
         assert.ok(statusLogger["_agentLogger"] instanceof FileWriter, "Wrong statusLogger agentLogger");
         assert.equal(statusLogger["_agentLogger"]["_filename"], "status_nodejs.json");
 
-        // Prefix Env variable should be set
-        assert.equal(process.env["AZURE_MONITOR_AGENT_PREFIX"].length, 3, "Missing prefix");
-
         if (isWindows) {
             assert.equal(diagnosticLogger["_agentLogger"]["_filepath"], "c:\\LogFiles\\ApplicationInsights\\status");
             assert.equal(statusLogger["_agentLogger"]["_filepath"], "c:\\LogFiles\\ApplicationInsights\\status");
-            assert.equal(process.env["AZURE_MONITOR_AGENT_PREFIX"], "aw_");
         }
         else {
             assert.equal(diagnosticLogger["_agentLogger"]["_filepath"], "/var/log/applicationinsights/");
             assert.equal(statusLogger["_agentLogger"]["_filepath"], "/var/log/applicationinsights/");
-            assert.equal(process.env["AZURE_MONITOR_AGENT_PREFIX"], "al_");
         }
         // Loader is using correct diagnostics
         assert.equal(agent["_diagnosticLogger"], diagnosticLogger, "Wrong diagnosticLogger");

test/unitTests/agent/azureFunctionsLoader.ts

@@ -43,9 +43,6 @@ describe("agent/AzureFunctionsLoader", () => {
         // Loader is using correct diagnostics
         assert.equal(agent["_diagnosticLogger"], diagnosticLogger);
         assert.equal(agent["_statusLogger"], statusLogger);
-        // Prefix Env variable should be set
-        assert.equal(process.env["AZURE_MONITOR_AGENT_PREFIX"].length, 3, "Missing prefix");
-        assert.ok(process.env["AZURE_MONITOR_AGENT_PREFIX"].startsWith, "f");
     });
 
     it("initialize", () => {