Add DD_OTLP_METRICS_COMPRESSION setting and map OTel env-vars to it (#10680)

mcculls · web-flow · commit 969d21d5077d · 2026-02-26T00:29:16.000Z
Add DD_OTLP_METRICS_COMPRESSION setting and map OTel env-vars to it

Merge branch 'master' into mcculls/otlp-compression-config

Merge branch 'master' into mcculls/otlp-compression-config

Co-authored-by: stuart.mcculloch &lt;stuart.mcculloch@datadoghq.com&gt;
diff --git a/dd-trace-api/src/main/java/datadog/trace/api/config/OtlpConfig.java b/dd-trace-api/src/main/java/datadog/trace/api/config/OtlpConfig.java
@@ -10,6 +10,7 @@ public final class OtlpConfig {
   public static final String OTLP_METRICS_ENDPOINT = "otlp.metrics.endpoint";
   public static final String OTLP_METRICS_HEADERS = "otlp.metrics.headers";
   public static final String OTLP_METRICS_PROTOCOL = "otlp.metrics.protocol";
+  public static final String OTLP_METRICS_COMPRESSION = "otlp.metrics.compression";
   public static final String OTLP_METRICS_TIMEOUT = "otlp.metrics.timeout";
   public static final String OTLP_METRICS_TEMPORALITY_PREFERENCE =
       "otlp.metrics.temporality.preference";
@@ -20,6 +21,11 @@ public enum Protocol {
     HTTP_JSON
   }
 
+  public enum Compression {
+    NONE,
+    GZIP
+  }
+
   public enum Temporality {
     CUMULATIVE,
     DELTA,
diff --git a/internal-api/src/main/java/datadog/trace/api/Config.java b/internal-api/src/main/java/datadog/trace/api/Config.java
@@ -449,6 +449,7 @@
 import static datadog.trace.api.config.OtlpConfig.METRICS_OTEL_ENABLED;
 import static datadog.trace.api.config.OtlpConfig.METRICS_OTEL_INTERVAL;
 import static datadog.trace.api.config.OtlpConfig.METRICS_OTEL_TIMEOUT;
+import static datadog.trace.api.config.OtlpConfig.OTLP_METRICS_COMPRESSION;
 import static datadog.trace.api.config.OtlpConfig.OTLP_METRICS_ENDPOINT;
 import static datadog.trace.api.config.OtlpConfig.OTLP_METRICS_HEADERS;
 import static datadog.trace.api.config.OtlpConfig.OTLP_METRICS_PROTOCOL;
@@ -919,6 +920,7 @@ public static String getHostName() {
   private final String otlpMetricsEndpoint;
   private final Map<String, String> otlpMetricsHeaders;
   private final OtlpConfig.Protocol otlpMetricsProtocol;
+  private final OtlpConfig.Compression otlpMetricsCompression;
   private final int otlpMetricsTimeout;
   private final OtlpConfig.Temporality otlpMetricsTemporalityPreference;
 
@@ -1929,6 +1931,9 @@ private Config(final ConfigProvider configProvider, final InstrumenterConfig ins
     otlpMetricsProtocol =
         configProvider.getEnum(
             OTLP_METRICS_PROTOCOL, OtlpConfig.Protocol.class, OtlpConfig.Protocol.HTTP_PROTOBUF);
+    otlpMetricsCompression =
+        configProvider.getEnum(
+            OTLP_METRICS_COMPRESSION, OtlpConfig.Compression.class, OtlpConfig.Compression.NONE);
 
     String otlpMetricsEndpointFromEnvironment = configProvider.getString(OTLP_METRICS_ENDPOINT);
     if (otlpMetricsEndpointFromEnvironment == null) {
@@ -5227,6 +5232,10 @@ public OtlpConfig.Protocol getOtlpMetricsProtocol() {
     return otlpMetricsProtocol;
   }
 
+  public OtlpConfig.Compression getOtlpMetricsCompression() {
+    return otlpMetricsCompression;
+  }
+
   public int getOtlpMetricsTimeout() {
     return otlpMetricsTimeout;
   }
@@ -6258,6 +6267,8 @@ public String toString() {
         + otlpMetricsHeaders
         + ", otlpMetricsProtocol="
         + otlpMetricsProtocol
+        + ", otlpMetricsCompression="
+        + otlpMetricsCompression
         + ", otlpMetricsTimeout="
         + otlpMetricsTimeout
         + ", otlpMetricsTemporalityPreference="
diff --git a/metadata/supported-configurations.json b/metadata/supported-configurations.json
@@ -2313,6 +2313,14 @@
         "aliases": []
       }
     ],
+    "DD_OTLP_METRICS_COMPRESSION": [
+      {
+        "version": "A",
+        "type": "string",
+        "default": "NONE",
+        "aliases": []
+      }
+    ],
     "DD_OTLP_METRICS_TIMEOUT": [
       {
         "version": "A",
@@ -11081,6 +11089,14 @@
         "aliases": []
       }
     ],
+    "OTEL_EXPORTER_OTLP_COMPRESSION": [
+      {
+        "version": "A",
+        "type": "string",
+        "default": null,
+        "aliases": []
+      }
+    ],
     "OTEL_EXPORTER_OTLP_TIMEOUT": [
       {
         "version": "A",
@@ -11113,6 +11129,14 @@
         "aliases": []
       }
     ],
+    "OTEL_EXPORTER_OTLP_METRICS_COMPRESSION": [
+      {
+        "version": "A",
+        "type": "string",
+        "default": null,
+        "aliases": []
+      }
+    ],
     "OTEL_EXPORTER_OTLP_METRICS_TIMEOUT": [
       {
         "version": "B",
diff --git a/utils/config-utils/src/main/java/datadog/trace/bootstrap/config/provider/OtelEnvironmentConfigSource.java b/utils/config-utils/src/main/java/datadog/trace/bootstrap/config/provider/OtelEnvironmentConfigSource.java
@@ -12,6 +12,7 @@
 import static datadog.trace.api.config.OtlpConfig.METRICS_OTEL_ENABLED;
 import static datadog.trace.api.config.OtlpConfig.METRICS_OTEL_INTERVAL;
 import static datadog.trace.api.config.OtlpConfig.METRICS_OTEL_TIMEOUT;
+import static datadog.trace.api.config.OtlpConfig.OTLP_METRICS_COMPRESSION;
 import static datadog.trace.api.config.OtlpConfig.OTLP_METRICS_ENDPOINT;
 import static datadog.trace.api.config.OtlpConfig.OTLP_METRICS_HEADERS;
 import static datadog.trace.api.config.OtlpConfig.OTLP_METRICS_PROTOCOL;
@@ -158,6 +159,9 @@ private void setupMetricsOtelEnvironment() {
       capture(
           OTLP_METRICS_PROTOCOL,
           getOtelOtlpProperty("metrics", "protocol", "dd." + OTLP_METRICS_PROTOCOL));
+      capture(
+          OTLP_METRICS_COMPRESSION,
+          getOtelOtlpProperty("metrics", "compression", "dd." + OTLP_METRICS_COMPRESSION));
       capture(
           OTLP_METRICS_TIMEOUT,
           getOtelOtlpProperty("metrics", "timeout", "dd." + OTLP_METRICS_TIMEOUT));
