Disable backend requests for impacted tests data

dd-java-agent/agent-ci-visibility/src/main/java/datadog/trace/civisibility/config/ExecutionSettingsFactoryImpl.java

@@ -431,28 +431,30 @@ private Diff getPullRequestDiff(
       LOGGER.error("Could not get git diff for PR: {}", pullRequestInfo, e);
     }
 
-    try {
-      ChangedFiles changedFiles = configurationApi.getChangedFiles(tracerEnvironment);
-
-      // attempting to use base SHA returned by the backend to calculate git diff
-      if (repositoryRoot != null) {
-        // ensure repo is not shallow before attempting to get git diff
-        gitRepoUnshallow.unshallow();
-        Diff diff = gitClient.getGitDiff(changedFiles.getBaseSha(), tracerEnvironment.getSha());
-        if (diff != null) {
-          return diff;
+    if (config.isCiVisibilityImpactedTestsBackendRequestEnabled()) {
+      try {
+        ChangedFiles changedFiles = configurationApi.getChangedFiles(tracerEnvironment);
+
+        // attempting to use base SHA returned by the backend to calculate git diff
+        if (repositoryRoot != null) {
+          // ensure repo is not shallow before attempting to get git diff
+          gitRepoUnshallow.unshallow();
+          Diff diff = gitClient.getGitDiff(changedFiles.getBaseSha(), tracerEnvironment.getSha());
+          if (diff != null) {
+            return diff;
+          }
         }
-      }
 
-      // falling back to file-level granularity
-      return new FileDiff(changedFiles.getFiles());
+        // falling back to file-level granularity
+        return new FileDiff(changedFiles.getFiles());
 
-    } catch (InterruptedException e) {
-      LOGGER.error("Interrupted while getting git diff for: {}", tracerEnvironment, e);
-      Thread.currentThread().interrupt();
+      } catch (InterruptedException e) {
+        LOGGER.error("Interrupted while getting git diff for: {}", tracerEnvironment, e);
+        Thread.currentThread().interrupt();
 
-    } catch (Exception e) {
-      LOGGER.error("Could not get git diff for: {}", tracerEnvironment, e);
+      } catch (Exception e) {
+        LOGGER.error("Could not get git diff for: {}", tracerEnvironment, e);
+      }
     }
 
     return LineDiff.EMPTY;

dd-smoke-tests/maven/src/test/groovy/datadog/smoketest/MavenSmokeTest.groovy

@@ -116,7 +116,8 @@ class MavenSmokeTest extends CiVisibilitySmokeTest {
     mockBackend.givenChangedFile("src/test/java/datadog/smoke/TestSucceed.java")
 
     def exitCode = whenRunningMavenBuild([
-      "${Strings.propertyNameToSystemPropertyName(CiVisibilityConfig.CIVISIBILITY_GIT_CLIENT_ENABLED)}=false" as String
+      "${Strings.propertyNameToSystemPropertyName(CiVisibilityConfig.CIVISIBILITY_GIT_CLIENT_ENABLED)}=false" as String,
+      "${Strings.propertyNameToSystemPropertyName(CiVisibilityConfig.CIVISIBILITY_IMPACTED_TESTS_BACKEND_REQUEST_ENABLED)}=true" as String
     ], [])
     assert exitCode == 0
 

dd-trace-api/src/main/java/datadog/trace/api/config/CiVisibilityConfig.java

@@ -54,6 +54,8 @@ public final class CiVisibilityConfig {
   public static final String CIVISIBILITY_FLAKY_RETRY_ENABLED = "civisibility.flaky.retry.enabled";
   public static final String CIVISIBILITY_IMPACTED_TESTS_DETECTION_ENABLED =
       "civisibility.impacted.tests.detection.enabled";
+  public static final String CIVISIBILITY_IMPACTED_TESTS_BACKEND_REQUEST_ENABLED =
+      "civisibility.impacted.tests.backend.request.enabled";
   public static final String CIVISIBILITY_KNOWN_TESTS_REQUEST_ENABLED =
       "civisibility.known.tests.request.enabled";
   public static final String CIVISIBILITY_FLAKY_RETRY_ONLY_KNOWN_FLAKES =

internal-api/src/main/java/datadog/trace/api/Config.java

@@ -359,6 +359,7 @@ public static String getHostName() {
   private final List<String> ciVisibilityResourceFolderNames;
   private final boolean ciVisibilityFlakyRetryEnabled;
   private final boolean ciVisibilityImpactedTestsDetectionEnabled;
+  private final boolean ciVisibilityImpactedTestsBackendRequestEnabled;
   private final boolean ciVisibilityKnownTestsRequestEnabled;
   private final boolean ciVisibilityFlakyRetryOnlyKnownFlakes;
   private final int ciVisibilityFlakyRetryCount;
@@ -1501,6 +1502,8 @@ PROFILING_DATADOG_PROFILER_ENABLED, isDatadogProfilerSafeInCurrentEnvironment())
         configProvider.getBoolean(CIVISIBILITY_FLAKY_RETRY_ENABLED, true);
     ciVisibilityImpactedTestsDetectionEnabled =
         configProvider.getBoolean(CIVISIBILITY_IMPACTED_TESTS_DETECTION_ENABLED, true);
+    ciVisibilityImpactedTestsBackendRequestEnabled =
+        configProvider.getBoolean(CIVISIBILITY_IMPACTED_TESTS_BACKEND_REQUEST_ENABLED, false);
     ciVisibilityKnownTestsRequestEnabled =
         configProvider.getBoolean(CIVISIBILITY_KNOWN_TESTS_REQUEST_ENABLED, true);
     ciVisibilityFlakyRetryOnlyKnownFlakes =
@@ -2945,6 +2948,10 @@ public boolean isCiVisibilityImpactedTestsDetectionEnabled() {
     return ciVisibilityImpactedTestsDetectionEnabled;
   }
 
+  public boolean isCiVisibilityImpactedTestsBackendRequestEnabled() {
+    return ciVisibilityImpactedTestsBackendRequestEnabled;
+  }
+
   public boolean isCiVisibilityKnownTestsRequestEnabled() {
     return ciVisibilityKnownTestsRequestEnabled;
   }