Break out :exporters:common module (#4575)

* Break out :exporters:common module

* Comment out readme links

* spot

README.md

@@ -265,6 +265,7 @@ dependency as follows, replacing `{{artifact-id}}` with the value from the "Arti
 | [OTLP Logging Exporter](./exporters/logging-otlp)   | Logging exporters in OTLP protobuf JSON format, including metrics, traces, and logs | `opentelemetry-exporter-logging-otlp` | <!--VERSION_STABLE-->1.16.0<!--/VERSION_STABLE-->           |
 | [Zipkin Exporter](./exporters/zipkin)               | Zipkin trace exporter                                                               | `opentelemetry-exporter-zipkin`       | <!--VERSION_STABLE-->1.16.0<!--/VERSION_STABLE-->           |
 | [Prometheus Exporter](./exporters/prometheus)       | Prometheus metric exporter                                                          | `opentelemetry-exporter-prometheus`   | <!--VERSION_UNSTABLE-->1.16.0-alpha<!--/VERSION_UNSTABLE--> |
+| [Exporter Common](./exporters/common)               | Shared exporter components (internal)                                               | `opentelemetry-exporter-common`       | TODO: add version once published in 1.17.0                  |
 
 ### SDK Extensions
 

docs/apidiffs/current_vs_latest/opentelemetry-exporter-common.txt

@@ -0,0 +1,2 @@
+Comparing source compatibility of  against 
+No changes.

exporters/common/README.md

@@ -0,0 +1,8 @@
+# OpenTelemetry - Exporter Common
+
+<!-- TODO: uncomment once published
+[![Javadocs][javadoc-image]][javadoc-url]
+
+[javadoc-image]: https://www.javadoc.io/badge/io.opentelemetry/opentelemetry-exporter-common.svg
+[javadoc-url]: https://www.javadoc.io/doc/io.opentelemetry/opentelemetry-exporter-common
+-->

exporters/common/build.gradle.kts

@@ -0,0 +1,39 @@
+plugins {
+  id("otel.java-conventions")
+  id("otel.publish-conventions")
+
+  id("otel.animalsniffer-conventions")
+}
+
+description = "OpenTelemetry Exporter Common"
+otelJava.moduleName.set("io.opentelemetry.exporter.internal")
+
+val versions: Map<String, String> by project
+dependencies {
+  api(project(":api:all"))
+
+  compileOnly(project(":sdk:common"))
+
+  compileOnly("org.codehaus.mojo:animal-sniffer-annotations")
+
+  annotationProcessor("com.google.auto.value:auto-value")
+
+  // We include helpers shared by gRPC or okhttp exporters but do not want to impose these
+  // dependency on all of our consumers.
+  compileOnly("com.fasterxml.jackson.core:jackson-core")
+  compileOnly("com.squareup.okhttp3:okhttp")
+  compileOnly("io.grpc:grpc-netty")
+  compileOnly("io.grpc:grpc-netty-shaded")
+  compileOnly("io.grpc:grpc-okhttp")
+  compileOnly("io.grpc:grpc-stub")
+
+  testImplementation(project(":sdk:common"))
+
+  testImplementation("com.google.protobuf:protobuf-java-util")
+  testImplementation("com.squareup.okhttp3:okhttp")
+  testImplementation("com.linecorp.armeria:armeria-junit5")
+  testImplementation("org.skyscreamer:jsonassert")
+  testImplementation("com.google.api.grpc:proto-google-common-protos")
+  testImplementation("io.grpc:grpc-testing")
+  testRuntimeOnly("io.grpc:grpc-netty-shaded")
+}

exporters/common/src/main/java/io/opentelemetry/exporter/internal/auth/package-info.java

@@ -0,0 +1,10 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/** Utilities for exporter authentication. */
+@ParametersAreNonnullByDefault
+package io.opentelemetry.exporter.internal.auth;
+
+import javax.annotation.ParametersAreNonnullByDefault;

exporters/jaeger/build.gradle.kts

@@ -15,13 +15,12 @@ dependencies {
 
   protoSource(project(":exporters:jaeger-proto"))
 
-  // TODO(anuraaga): otlp-common has a lot of code not specific to OTLP now. As it's just internal
-  // code, this mysterious dependency is possibly still OK but we may need a rename or splitting.
-  implementation(project(":exporters:otlp:common"))
+  implementation(project(":exporters:common"))
   implementation(project(":semconv"))
 
   compileOnly("io.grpc:grpc-stub")
 
+  implementation("com.squareup.okhttp3:okhttp")
   implementation("com.fasterxml.jackson.jr:jackson-jr-objects")
 
   testImplementation(project(":exporters:jaeger-proto"))

exporters/otlp/common/build.gradle.kts

@@ -15,26 +15,14 @@ val versions: Map<String, String> by project
 dependencies {
   protoSource("io.opentelemetry.proto:opentelemetry-proto:${versions["io.opentelemetry.proto"]}")
 
-  api(project(":api:all"))
+  api(project(":exporters:common"))
 
   compileOnly(project(":sdk:metrics"))
   compileOnly(project(":sdk:trace"))
   compileOnly(project(":sdk:logs"))
 
   implementation("com.squareup.okhttp3:okhttp")
 
-  compileOnly("org.codehaus.mojo:animal-sniffer-annotations")
-
-  // We include helpers shared by gRPC or okhttp exporters but do not want to impose these
-  // dependency on all of our consumers.
-  compileOnly("com.fasterxml.jackson.core:jackson-core")
-  compileOnly("io.grpc:grpc-netty")
-  compileOnly("io.grpc:grpc-netty-shaded")
-  compileOnly("io.grpc:grpc-okhttp")
-  compileOnly("io.grpc:grpc-stub")
-
-  annotationProcessor("com.google.auto.value:auto-value")
-
   testImplementation(project(":sdk:metrics"))
   testImplementation(project(":sdk:trace"))
   testImplementation(project(":sdk:logs"))
@@ -43,20 +31,13 @@ dependencies {
 
   testImplementation("com.fasterxml.jackson.core:jackson-databind")
   testImplementation("com.google.protobuf:protobuf-java-util")
-  testImplementation("com.linecorp.armeria:armeria-junit5")
   testImplementation("io.opentelemetry.proto:opentelemetry-proto")
-  testImplementation("org.skyscreamer:jsonassert")
-  testImplementation("org.assertj:assertj-core")
-
-  testImplementation("com.google.api.grpc:proto-google-common-protos")
-  testImplementation("io.grpc:grpc-testing")
-  testRuntimeOnly("io.grpc:grpc-netty-shaded")
 
   jmhImplementation(project(":sdk:testing"))
   jmhImplementation(project(":sdk-extensions:resources"))
   jmhImplementation("com.fasterxml.jackson.core:jackson-core")
   jmhImplementation("io.opentelemetry.proto:opentelemetry-proto")
-  jmhRuntimeOnly("io.grpc:grpc-netty")
+  jmhImplementation("io.grpc:grpc-netty")
 }
 
 wire {

sdk-extensions/autoconfigure/build.gradle.kts

@@ -13,6 +13,7 @@ dependencies {
   api(project(":sdk-extensions:autoconfigure-spi"))
 
   implementation(project(":semconv"))
+  implementation(project(":exporters:common"))
 
   compileOnly(project(":exporters:jaeger"))
   compileOnly(project(":exporters:logging"))

sdk-extensions/jaeger-remote-sampler/build.gradle.kts

@@ -15,10 +15,7 @@ dependencies {
   compileOnly(project(":sdk-extensions:autoconfigure"))
 
   implementation(project(":sdk:all"))
-
-  // TODO(anuraaga): otlp-common has a lot of code not specific to OTLP now. As it's just internal
-  // code, this mysterious dependency is possibly still OK but we may need a rename or splitting.
-  implementation(project(":exporters:otlp:common"))
+  implementation(project(":exporters:common"))
 
   implementation("com.squareup.okhttp3:okhttp")
 
@@ -39,13 +36,14 @@ testing {
     val testGrpcNetty by registering(JvmTestSuite::class) {
       dependencies {
         implementation(project(":sdk:testing"))
+        implementation(project(":exporters:common"))
+
         implementation("com.google.protobuf:protobuf-java-util")
         implementation("com.linecorp.armeria:armeria-junit5")
         implementation("com.linecorp.armeria:armeria-grpc-protocol")
         implementation("org.testcontainers:junit-jupiter")
         implementation("io.grpc:grpc-netty")
         implementation("io.grpc:grpc-stub")
-        implementation(project(":exporters:otlp:common"))
       }
     }
   }

settings.gradle.kts

@@ -33,6 +33,7 @@ include(":extensions:aws")
 include(":extensions:kotlin")
 include(":extensions:noop-api")
 include(":extensions:trace-propagators")
+include(":exporters:common")
 include(":exporters:jaeger")
 include(":exporters:jaeger-proto")
 include(":exporters:jaeger-thrift")