read config file path from TEAMSCALE_JAVA_PROFILER_CONFIG_FILE

CHANGELOG.md

@@ -5,6 +5,7 @@ We use [semantic versioning](http://semver.org/):
 - PATCH version when you make backwards compatible bug fixes.
 
 # Next Release
+- [feature] Read configuration file path from `TEAMSCALE_JAVA_PROFILER_CONFIG_FILE` environment variable
 - [feature] add installer for Windows
 - [feature] Docker: agent copies itself to `/transfer` if this is mounted into the container
 - [fix] Disable warning about proxy port not being correct when no proxy port was set at all

agent/README.md

@@ -51,8 +51,9 @@ The following options are available:
 - `out` (optional): the path to a writable directory where the generated coverage XML files will be stored. (For details
   see path format section below). Defaults to the subdirectory `coverage` inside the agent's installation directory.
 - `config-file` (optional): a file which contains one or more of the previously named options as `key=value` entries
-  which are separated by line breaks. The file may also contain comments starting with `#`. (For details see path format
-  section below)
+  which are separated by line breaks. The file may also contain comments starting with `#`. For details see path format
+  section below.
+  Alternatively you can also set the `TEAMSCALE_JAVA_PROFILER_CONFIG_FILE` environment variable to that value.
 - `config-id` (optional): a profiler configuration ID as defined in Teamscale. This allows to centrally manage the 
   profiler configuration in Teamscale's UI (under Project Configuration > Profilers since Teamscale 9.4).
   Alternatively you can also set the `TEAMSCALE_JAVA_PROFILER_CONFIG_ID` environment variable to that value.

agent/src/main/java/com/teamscale/jacoco/agent/PreMain.java

@@ -42,9 +42,13 @@ public class PreMain {
 	 */
 	private static final String LOCKING_SYSTEM_PROPERTY = "TEAMSCALE_JAVA_PROFILER_ATTACHED";
 
-	/** Environment variable from which to read the config file to use. */
+	/** Environment variable from which to read the config ID to use.
+	 * This is an ID for a profiler configuration that is stored in Teamscale. */
 	private static final String CONFIG_ID_ENVIRONMENT_VARIABLE = "TEAMSCALE_JAVA_PROFILER_CONFIG_ID";
 
+	/** Environment variable from which to read the config file to use. */
+	private static final String CONFIG_FILE_ENVIRONMENT_VARIABLE = "TEAMSCALE_JAVA_PROFILER_CONFIG_FILE";
+
 	/**
 	 * Entry point for the agent, called by the JVM.
 	 */
@@ -55,15 +59,16 @@ public static void premain(String options, Instrumentation instrumentation) thro
 		System.setProperty(LOCKING_SYSTEM_PROPERTY, "true");
 
 		String environmentConfigId = System.getenv(CONFIG_ID_ENVIRONMENT_VARIABLE);
-		if (StringUtils.isEmpty(options) && environmentConfigId == null) {
+		String environmentConfigFile = System.getenv(CONFIG_FILE_ENVIRONMENT_VARIABLE);
+		if (StringUtils.isEmpty(options) && environmentConfigId == null && environmentConfigFile == null) {
 			// profiler was registered globally and no config was set explicitly by the user, thus ignore this process
 			// and don't profile anything
 			return;
 		}
 
 		AgentOptions agentOptions;
 		try {
-			agentOptions = getAndApplyAgentOptions(options, environmentConfigId);
+			agentOptions = getAndApplyAgentOptions(options, environmentConfigId, environmentConfigFile);
 		} catch (AgentOptionReceiveException e) {
 			// When Teamscale is not available, we don't want to fail hard to still allow for testing even if no
 			// coverage is collected (see TS-33237)
@@ -85,8 +90,9 @@ public static void premain(String options, Instrumentation instrumentation) thro
 	}
 
 	@NotNull
-	private static AgentOptions getAndApplyAgentOptions(String options,
-														String environmentConfigId) throws AgentOptionParseException, IOException, AgentOptionReceiveException {
+	private static AgentOptions getAndApplyAgentOptions(String options, String environmentConfigId,
+														String environmentConfigFile) throws AgentOptionParseException, IOException, AgentOptionReceiveException {
+
 		DelayedLogger delayedLogger = new DelayedLogger();
 		List<String> javaAgents = CollectionUtils.filter(ManagementFactory.getRuntimeMXBean().getInputArguments(),
 				s -> s.contains("-javaagent"));
@@ -103,7 +109,7 @@ private static AgentOptions getAndApplyAgentOptions(String options,
 		}
 		AgentOptions agentOptions;
 		try {
-			agentOptions = AgentOptionsParser.parse(options, environmentConfigId, credentials, delayedLogger);
+			agentOptions = AgentOptionsParser.parse(options, environmentConfigId, environmentConfigFile, credentials, delayedLogger);
 		} catch (AgentOptionParseException e) {
 			try (LoggingUtils.LoggingResources ignored = initializeFallbackLogging(options, delayedLogger)) {
 				delayedLogger.errorAndStdErr("Failed to parse agent options: " + e.getMessage(), e);
@@ -112,7 +118,9 @@ private static AgentOptions getAndApplyAgentOptions(String options,
 			}
 		} catch (AgentOptionReceiveException e) {
 			try (LoggingUtils.LoggingResources ignored = initializeFallbackLogging(options, delayedLogger)) {
-				delayedLogger.errorAndStdErr( e.getMessage() + " The application should start up normally, but NO coverage will be collected!", e);
+				delayedLogger.errorAndStdErr(
+						e.getMessage() + " The application should start up normally, but NO coverage will be collected!",
+						e);
 				attemptLogAndThrow(delayedLogger);
 				throw e;
 			}

agent/src/main/java/com/teamscale/jacoco/agent/options/AgentOptionsParser.java

@@ -50,27 +50,30 @@ public class AgentOptionsParser {
 	private final FilePatternResolver filePatternResolver;
 	private final TeamscaleConfig teamscaleConfig;
 	private final String environmentConfigId;
+	private final String environmentConfigFile;
 	private final TeamscaleCredentials credentials;
 
 	/**
 	 * Parses the given command-line options.
 	 *
-	 * @param environmentConfigId The Profiler configuration ID given via the
-	 *                            {@link com.teamscale.jacoco.agent.PreMain#CONFIG_ID_ENVIRONMENT_VARIABLE} environment
-	 *                            variable.
+	 * @param environmentConfigId   The Profiler configuration ID given via an environment variable.
+	 * @param environmentConfigFile The Profiler configuration file given via an environment variable.
 	 */
-	public static AgentOptions parse(String optionsString, String environmentConfigId,
+	public static AgentOptions parse(String optionsString, String environmentConfigId, String environmentConfigFile,
 									 TeamscaleCredentials credentials,
 									 ILogger logger) throws AgentOptionParseException, AgentOptionReceiveException {
-		return new AgentOptionsParser(logger, environmentConfigId, credentials).parse(optionsString);
+		return new AgentOptionsParser(logger, environmentConfigId, environmentConfigFile, credentials).parse(
+				optionsString);
 	}
 
 	@VisibleForTesting
-	AgentOptionsParser(ILogger logger, String environmentConfigId, TeamscaleCredentials credentials) {
+	AgentOptionsParser(ILogger logger, String environmentConfigId, String environmentConfigFile,
+					   TeamscaleCredentials credentials) {
 		this.logger = logger;
 		this.filePatternResolver = new FilePatternResolver(logger);
 		this.teamscaleConfig = new TeamscaleConfig(logger, filePatternResolver);
 		this.environmentConfigId = environmentConfigId;
+		this.environmentConfigFile = environmentConfigFile;
 		this.credentials = credentials;
 	}
 
@@ -99,9 +102,7 @@ public static AgentOptions parse(String optionsString, String environmentConfigI
 			}
 		}
 
-		if (environmentConfigId != null) {
-			handleOption(options, "config-id=" + environmentConfigId);
-		}
+		handleConfigFromEnvironment(options);
 
 		Validator validator = options.getValidator();
 		if (!validator.isValid()) {
@@ -110,6 +111,23 @@ public static AgentOptions parse(String optionsString, String environmentConfigI
 		return options;
 	}
 
+	private void handleConfigFromEnvironment(
+			AgentOptions options) throws AgentOptionParseException, AgentOptionReceiveException {
+		if (environmentConfigId != null) {
+			handleOption(options, "config-id=" + environmentConfigId);
+		}
+
+		if (environmentConfigFile != null) {
+			handleOption(options, "config-file=" + environmentConfigFile);
+		}
+
+		if (environmentConfigId != null && environmentConfigFile != null) {
+			logger.warn("You specified both an ID for a profiler configuration in Teamscale and a config file." +
+					" The config file will override the Teamscale configuration." +
+					" Please use one or the other.");
+		}
+	}
+
 	/**
 	 * Parses and stores the given option in the format <code>key=value</code>.
 	 */
@@ -267,7 +285,8 @@ private void readConfigFromTeamscale(AgentOptions options,
 				options.teamscaleServer.userName,
 				options.teamscaleServer.userAccessToken);
 		options.configurationViaTeamscale = configuration;
-		logger.debug("Received the following options from Teamscale: " + configuration.getProfilerConfiguration().configurationOptions);
+		logger.debug(
+				"Received the following options from Teamscale: " + configuration.getProfilerConfiguration().configurationOptions);
 		readConfigFromString(options, configuration.getProfilerConfiguration().configurationOptions);
 	}
 

agent/src/test/java/com/teamscale/jacoco/agent/options/AgentOptionsParserTest.java

@@ -15,6 +15,8 @@
 import org.junit.jupiter.api.Test;
 
 import java.io.IOException;
+import java.nio.file.Path;
+import java.nio.file.Paths;
 import java.util.UUID;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -25,13 +27,15 @@
 public class AgentOptionsParserTest {
 
 	private TeamscaleCredentials teamscaleCredentials;
-	private final AgentOptionsParser parser = new AgentOptionsParser(new CommandLineLogger(), null, null);
+	private final AgentOptionsParser parser = new AgentOptionsParser(new CommandLineLogger(), null, null, null);
+	private Path configFile;
 	/** The mock server to run requests against. */
 	protected MockWebServer mockWebServer;
 
 	/** Starts the mock server. */
 	@BeforeEach
 	public void setup() throws Exception {
+		configFile = Paths.get(getClass().getResource("agent.properties").toURI());
 		mockWebServer = new MockWebServer();
 		mockWebServer.start();
 		teamscaleCredentials = new TeamscaleCredentials(mockWebServer.url("/"), "user", "key");
@@ -68,7 +72,7 @@ public void testUploadMethodRecognition() throws Exception {
 	@Test
 	public void testUploadMethodRecognitionWithTeamscaleProperties() throws Exception {
 		TeamscaleCredentials credentials = new TeamscaleCredentials(HttpUrl.get("http://localhost"), "user", "key");
-		AgentOptionsParser parser = new AgentOptionsParser(new CommandLineLogger(), null, credentials);
+		AgentOptionsParser parser = new AgentOptionsParser(new CommandLineLogger(), null, null, credentials);
 
 		assertThat(parser.parse(null).determineUploadMethod()).isEqualTo(AgentOptions.EUploadMethod.LOCAL_DISK);
 		assertThat(parser.parse("azure-url=azure.com,azure-key=key").determineUploadMethod()).isEqualTo(
@@ -91,20 +95,44 @@ public void testUploadMethodRecognitionWithTeamscaleProperties() throws Exceptio
 	}
 
 	@Test
-	public void environmentConfigOverridesCommandLineOptions() throws Exception {
+	public void environmentConfigIdOverridesCommandLineOptions() throws Exception {
 		ProfilerRegistration registration = new ProfilerRegistration();
 		registration.profilerId = UUID.randomUUID().toString();
 		registration.profilerConfiguration = new ProfilerConfiguration();
 		registration.profilerConfiguration.configurationId = "my-config";
 		registration.profilerConfiguration.configurationOptions = "teamscale-partition=foo";
 		mockWebServer.enqueue(new MockResponse().setBody(JsonUtils.serialize(registration)));
 		AgentOptionsParser parser = new AgentOptionsParser(new CommandLineLogger(), "my-config",
-				teamscaleCredentials);
+				null, teamscaleCredentials);
 		AgentOptions options = parser.parse("teamscale-partition=bar");
 
 		assertThat(options.teamscaleServer.partition).isEqualTo("foo");
 	}
 
+	@Test
+	public void environmentConfigFileOverridesCommandLineOptions() throws Exception {
+		AgentOptionsParser parser = new AgentOptionsParser(new CommandLineLogger(), null, configFile.toString(),
+				teamscaleCredentials);
+		AgentOptions options = parser.parse("teamscale-partition=from-command-line");
+
+		assertThat(options.teamscaleServer.partition).isEqualTo("from-config-file");
+	}
+
+	@Test
+	public void environmentConfigFileOverridesConfigId() throws Exception {
+		ProfilerRegistration registration = new ProfilerRegistration();
+		registration.profilerId = UUID.randomUUID().toString();
+		registration.profilerConfiguration = new ProfilerConfiguration();
+		registration.profilerConfiguration.configurationId = "my-config";
+		registration.profilerConfiguration.configurationOptions = "teamscale-partition=from-config-id";
+		mockWebServer.enqueue(new MockResponse().setBody(JsonUtils.serialize(registration)));
+		AgentOptionsParser parser = new AgentOptionsParser(new CommandLineLogger(), "my-config", configFile.toString(),
+				teamscaleCredentials);
+		AgentOptions options = parser.parse("teamscale-partition=from-command-line");
+
+		assertThat(options.teamscaleServer.partition).isEqualTo("from-config-file");
+	}
+
 	@Test
 	public void notAllRequiredTeamscaleOptionsSet() {
 		assertThatCode(
@@ -183,7 +211,8 @@ public void revisionOrCommitRequireProject() {
 	public void environmentConfigIdDoesNotExist() {
 		mockWebServer.enqueue(new MockResponse().setResponseCode(404).setBody("invalid-config-id does not exist"));
 		assertThatThrownBy(
-				() -> new AgentOptionsParser(new CommandLineLogger(), "invalid-config-id", teamscaleCredentials).parse(
+				() -> new AgentOptionsParser(new CommandLineLogger(), "invalid-config-id", null,
+						teamscaleCredentials).parse(
 						"")
 		).isInstanceOf(AgentOptionParseException.class).hasMessageContaining("invalid-config-id does not exist");
 	}
@@ -203,7 +232,7 @@ public void mustPreserveDefaultExcludes() throws Exception {
 
 	@Test
 	public void teamscalePropertiesCredentialsUsedAsDefaultButOverridable() throws Exception {
-		AgentOptionsParser parser = new AgentOptionsParser(new CommandLineLogger(), null, teamscaleCredentials);
+		AgentOptionsParser parser = new AgentOptionsParser(new CommandLineLogger(), null, null, teamscaleCredentials);
 
 		assertThat(parser.parse("teamscale-project=p,teamscale-partition=p").teamscaleServer.userName).isEqualTo(
 				"user");

agent/src/test/java/com/teamscale/jacoco/agent/options/AgentOptionsTest.java

@@ -347,7 +347,7 @@ private static Predicate<String> excludeFilter(String filterString) throws Excep
 	}
 
 	private static AgentOptionsParser getAgentOptionsParserWithDummyLogger() {
-		return new AgentOptionsParser(new CommandLineLogger(), null, null);
+		return new AgentOptionsParser(new CommandLineLogger(), null, null, null);
 	}
 
 	/**

agent/src/test/resources/com/teamscale/jacoco/agent/options/agent.properties

@@ -0,0 +1 @@
+teamscale-partition=from-config-file