Json parser string length metrics are tagged by format

changelog/@unreleased/pr-2571.v2.yml

@@ -0,0 +1,5 @@
+type: improvement
+improvement:
+  description: Json parser string length metrics are tagged by format
+  links:
+  - https://github.com/palantir/conjure-java-runtime/pull/2571

conjure-java-jackson-serialization/src/main/java/com/palantir/conjure/java/serialization/InstrumentedJsonFactory.java

@@ -53,7 +53,7 @@ final class InstrumentedJsonFactory extends JsonFactory {
     private final ParserInstrumentation instrumentation;
 
     InstrumentedJsonFactory() {
-        this.instrumentation = new ParserInstrumentation();
+        this.instrumentation = new ParserInstrumentation(getFormatName());
     }
 
     private InstrumentedJsonFactory(JsonFactoryBuilder builder, ParserInstrumentation instrumentation) {

conjure-java-jackson-serialization/src/main/java/com/palantir/conjure/java/serialization/InstrumentedSmileFactory.java

@@ -34,11 +34,11 @@ final class InstrumentedSmileFactory extends SmileFactory {
     private final ParserInstrumentation instrumentation;
 
     InstrumentedSmileFactory() {
-        instrumentation = new ParserInstrumentation();
+        instrumentation = new ParserInstrumentation(getFormatName());
     }
 
     private InstrumentedSmileFactory(SmileFactoryBuilder builder) {
-        this(builder, new ParserInstrumentation());
+        this(builder, new ParserInstrumentation(FORMAT_NAME_SMILE));
     }
 
     private InstrumentedSmileFactory(SmileFactoryBuilder builder, ParserInstrumentation instrumentation) {

conjure-java-jackson-serialization/src/main/java/com/palantir/conjure/java/serialization/ParserInstrumentation.java

@@ -35,10 +35,10 @@ final class ParserInstrumentation {
 
     // Using the shared metric registry singleton to avoid API churn in methods that use this instrumentation.
     @SuppressWarnings("deprecation")
-    ParserInstrumentation() {
+    ParserInstrumentation(String format) {
         creationStackTrace = new SafeRuntimeException("Stream factory created here");
         parsedStringLength = JsonParserMetrics.of(SharedTaggedMetricRegistries.getSingleton())
-                .stringLength();
+                .stringLength(format);
     }
 
     /** Returns the input, recording length of the value. */

conjure-java-jackson-serialization/src/main/metrics/jackson-registry-metrics.yml

@@ -7,4 +7,6 @@ namespaces:
     metrics:
       string.length:
         type: histogram
+        tags:
+          - format
         docs: Histogram describing the length of strings parsed from input.

conjure-java-jackson-serialization/src/test/java/com/palantir/conjure/java/serialization/ObjectMappersTest.java

@@ -21,12 +21,14 @@
 
 import com.codahale.metrics.Histogram;
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.core.JsonFactory;
 import com.fasterxml.jackson.core.JsonParseException;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.core.exc.InputCoercionException;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.exc.InvalidFormatException;
 import com.fasterxml.jackson.databind.json.JsonMapper;
+import com.fasterxml.jackson.dataformat.smile.SmileFactory;
 import com.palantir.logsafe.Preconditions;
 import com.palantir.tritium.metrics.registry.SharedTaggedMetricRegistries;
 import com.palantir.tritium.metrics.registry.TaggedMetricRegistry;
@@ -319,7 +321,7 @@ public void testStringMetrics_json() throws IOException {
         TaggedMetricRegistry registry = SharedTaggedMetricRegistries.getSingleton();
         // Unregister all metrics
         registry.forEachMetric((name, _value) -> registry.remove(name));
-        Histogram stringLength = JsonParserMetrics.of(registry).stringLength();
+        Histogram stringLength = JsonParserMetrics.of(registry).stringLength(JsonFactory.FORMAT_NAME_JSON);
         assertThat(stringLength.getSnapshot().size()).isZero();
         // Length must exceed the minimum threshold for metrics (64 characters)
         String expected = "Hello, World!".repeat(10);
@@ -334,7 +336,7 @@ public void testStringMetricsNotRecordedWhenValuesAreSmall_json() throws IOExcep
         TaggedMetricRegistry registry = SharedTaggedMetricRegistries.getSingleton();
         // Unregister all metrics
         registry.forEachMetric((name, _value) -> registry.remove(name));
-        Histogram stringLength = JsonParserMetrics.of(registry).stringLength();
+        Histogram stringLength = JsonParserMetrics.of(registry).stringLength(JsonFactory.FORMAT_NAME_JSON);
         assertThat(stringLength.getSnapshot().size()).isZero();
         String expected = "Hello, World!";
         String value = ObjectMappers.newServerJsonMapper().readValue("\"" + expected + "\"", String.class);
@@ -347,7 +349,7 @@ public void testStringMetrics_smile() throws IOException {
         TaggedMetricRegistry registry = SharedTaggedMetricRegistries.getSingleton();
         // Unregister all metrics
         registry.forEachMetric((name, _value) -> registry.remove(name));
-        Histogram stringLength = JsonParserMetrics.of(registry).stringLength();
+        Histogram stringLength = JsonParserMetrics.of(registry).stringLength(SmileFactory.FORMAT_NAME_SMILE);
         assertThat(stringLength.getSnapshot().size()).isZero();
         // Length must exceed the minimum threshold for metrics (64 characters)
         String expected = "Hello, World!".repeat(10);
@@ -363,7 +365,7 @@ public void testStringMetricsNotRecordedWhenValuesAreSmall_smile() throws IOExce
         TaggedMetricRegistry registry = SharedTaggedMetricRegistries.getSingleton();
         // Unregister all metrics
         registry.forEachMetric((name, _value) -> registry.remove(name));
-        Histogram stringLength = JsonParserMetrics.of(registry).stringLength();
+        Histogram stringLength = JsonParserMetrics.of(registry).stringLength(SmileFactory.FORMAT_NAME_SMILE);
         assertThat(stringLength.getSnapshot().size()).isZero();
         String expected = "Hello, World!";
         String value = ObjectMappers.newServerSmileMapper()