Add configurable Dependency service resolution period (#8079)

Author: jandro996

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

@@ -89,6 +89,8 @@ public final class GeneralConfig {
   public static final String AGENTLESS_LOG_SUBMISSION_ENABLED = "agentless.log.submission.enabled";
   public static final String AGENTLESS_LOG_SUBMISSION_QUEUE_SIZE =
       "agentless.log.submission.queue.size";
+  public static final String TELEMETRY_DEPENDENCY_RESOLUTION_PERIOD_MILLIS =
+      "telemetry.dependency.resolution.period.millis";
   public static final String AGENTLESS_LOG_SUBMISSION_LEVEL = "agentless.log.submission.level";
   public static final String AGENTLESS_LOG_SUBMISSION_URL = "agentless.log.submission.url";
 

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

@@ -538,6 +538,8 @@ public static String getHostName() {
   private final int cloudPayloadTaggingMaxDepth;
   private final int cloudPayloadTaggingMaxTags;
 
+  private final long dependecyResolutionPeriodMillis;
+
   // Read order: System Properties -> Env Variables, [-> properties file], [-> default value]
   private Config() {
     this(ConfigProvider.createDefault());
@@ -1802,6 +1804,11 @@ PROFILING_DATADOG_PROFILER_ENABLED, isDatadogProfilerSafeInCurrentEnvironment())
     this.cloudPayloadTaggingMaxTags =
         configProvider.getInteger(TracerConfig.TRACE_CLOUD_PAYLOAD_TAGGING_MAX_TAGS, 758);
 
+    this.dependecyResolutionPeriodMillis =
+        configProvider.getLong(
+            GeneralConfig.TELEMETRY_DEPENDENCY_RESOLUTION_PERIOD_MILLIS,
+            1000); // 1 second by default
+
     timelineEventsEnabled =
         configProvider.getBoolean(
             ProfilingConfig.PROFILING_TIMELINE_EVENTS_ENABLED,
@@ -3700,6 +3707,10 @@ public boolean isEnabled(
         Collections.singletonList(settingName), "", settingSuffix, defaultEnabled);
   }
 
+  public long getDependecyResolutionPeriodMillis() {
+    return dependecyResolutionPeriodMillis;
+  }
+
   public boolean isDBMTracePreparedStatements() {
     return DBMTracePreparedStatements;
   }

telemetry/src/main/java/datadog/telemetry/dependency/DependencyService.java

@@ -1,5 +1,6 @@
 package datadog.telemetry.dependency;
 
+import datadog.trace.api.Config;
 import datadog.trace.util.AgentTaskScheduler;
 import java.lang.instrument.Instrumentation;
 import java.net.URI;
@@ -31,7 +32,11 @@ public class DependencyService implements Runnable {
   public void schedulePeriodicResolution() {
     scheduledTask =
         AgentTaskScheduler.INSTANCE.scheduleAtFixedRate(
-            AgentTaskScheduler.RunnableTask.INSTANCE, this, 0, 1000L, TimeUnit.MILLISECONDS);
+            AgentTaskScheduler.RunnableTask.INSTANCE,
+            this,
+            0,
+            Config.get().getDependecyResolutionPeriodMillis(),
+            TimeUnit.MILLISECONDS);
   }
 
   public void resolveOneDependency() {