Initial setup for publishing snapshots to OJO. (#523)

* Initial setup for publishing snapshots to OJO.

* Oops, we need a TAB instead of spaces in Makefile.

.circleci/config.yml

@@ -9,6 +9,9 @@ build_task: &build_task
 verify_task: &verify_task
   name: Verify Google Java Format
   command: make verify-format
+publish_snapshots_task: &publish_snapshots_task
+  name: Publish Snapshot Artifacts
+  command: make publish-snapshots
 
 jobs:
   build:
@@ -31,6 +34,9 @@ jobs:
       - run:
           name: Publish coverage
           command:  bash <(curl -s https://codecov.io/bash)
+# Publish the snapshots using Java 8 (and only from master).
+      - run:
+          <<: *publish_snapshots_task
       - save_cache:
           paths:
             - ~/.gradle

Makefile

@@ -12,3 +12,9 @@ init-git-submodules:
 .PHONY: verify-format
 verify-format:
 	./gradlew verGJF
+
+.PHONY: publish-snapshots
+publish-snapshots:
+ifeq ($(CIRCLE_BRANCH),master)
+	./gradlew artifactoryPublish
+endif

build.gradle

@@ -5,12 +5,14 @@ buildscript {
         maven {
             url "https://plugins.gradle.org/m2/"
         }
+        jcenter()
     }
     dependencies {
         classpath 'ru.vyarus:gradle-animalsniffer-plugin:1.5.0'
         classpath 'net.ltgt.gradle:gradle-errorprone-plugin:0.0.16'
         classpath 'com.github.ben-manes:gradle-versions-plugin:0.20.0'
         classpath "gradle.plugin.com.github.sherter.google-java-format:google-java-format-gradle-plugin:0.8"
+        classpath 'org.jfrog.buildinfo:build-info-extractor-gradle:4.9.8'
     }
 }
 
@@ -26,10 +28,12 @@ subprojects {
     apply plugin: 'idea'
     apply plugin: 'signing'
     apply plugin: 'jacoco'
+    apply plugin: 'maven-publish'
     // The plugin only has an effect if a signature is specified
     apply plugin: 'ru.vyarus.animalsniffer'
     apply plugin: 'com.github.sherter.google-java-format'
     apply plugin: 'net.ltgt.errorprone'
+    apply plugin: 'com.jfrog.artifactory'
 
     group = "io.opentelemetry"
     version = "0.1.0-SNAPSHOT" // CURRENT_VERSION
@@ -217,4 +221,6 @@ subprojects {
         }
         maxHeapSize = '1500m'
     }
+
+    apply from: "${rootProject.projectDir}/gradle/publish.gradle"
 }

gradle/publish.gradle

@@ -0,0 +1,58 @@
+
+publishing {
+    publications {
+        mavenPublication(MavenPublication) {
+            version version
+            groupId group
+
+            from components.java
+            artifact sourcesJar
+            artifact javadocJar
+
+            pom {
+                name = 'OpenTelemetry Java'
+                packaging = 'jar'
+                description = 'OpenTelemetry for Java'
+                url = 'https://github.com/open-telemetry/opentelemetry-java'
+                licenses {
+                    license {
+                        name = 'The Apache License, Version 2.0'
+                        url = 'http://www.apache.org/licenses/LICENSE-2.0.txt'
+                    }
+                }
+                developers {
+                    developer {
+                        id = 'opentelemetry'
+                        name = 'OpenTelemetry Gitter'
+                        url = 'https://gitter.im/open-telemetry/community'
+                    }
+                }
+                scm {
+                    connection = 'scm:git:git@github.com:open-telemetry/opentelemetry-java.git'
+                    developerConnection = 'scm:git:git@github.com:open-telemetry/opentelemetry-java.git'
+                    url = 'git@github.com:open-telemetry/opentelemetry-java.git'
+                }
+            }
+        }
+    }
+}
+
+// Snapshot publishing.
+artifactory {
+    contextUrl = 'https://oss.jfrog.org'
+    publish {
+        repository {
+            repoKey = 'oss-snapshot-local'
+            username = System.getenv("BINTRAY_USER")
+            password = System.getenv("BINTRAY_KEY")
+        }
+        defaults {
+            publications('mavenPublication')
+            publishArtifacts = true
+            publishPom = true
+        }
+    }
+    resolve {
+        repoKey = 'libs-release'
+    }
+}