Add entrypoint type to process tags

Author: amarziali

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

@@ -68,10 +68,12 @@ private static void fillBaseTags(Map<String, String> tags) {
           CapturedEnvironment.get().getProcessInfo();
       if (processInfo.mainClass != null) {
         tags.put("entrypoint.name", processInfo.mainClass);
+        tags.put("entrypoint.type", "class");
       }
       if (processInfo.jarFile != null) {
         final String jarName = processInfo.jarFile.getName();
         tags.put("entrypoint.name", jarName.substring(0, jarName.length() - 4)); // strip .jar
+        tags.put("entrypoint.type", "jar");
         insertLastPathSegmentIfPresent(tags, processInfo.jarFile.getParent(), "entrypoint.basedir");
       }
 

internal-api/src/test/groovy/datadog/trace/api/ProcessTagsForkedTest.groovy

@@ -30,9 +30,9 @@ class ProcessTagsForkedTest extends DDSpecification {
     tags =~ expected
     where:
     jar                                     | cls             | expected
-    Paths.get("my test", "my.jar").toFile() | null            | "entrypoint.basedir:my_test,entrypoint.name:my,entrypoint.workdir:[^,]+"
-    Paths.get("my.jar").toFile()            | null            | "entrypoint.name:my,entrypoint.workdir:[^,]+"
-    null                                    | "com.test.Main" | "entrypoint.name:com.test.main,entrypoint.workdir:[^,]+"
+    Paths.get("my test", "my.jar").toFile() | null            | "entrypoint.basedir:my_test,entrypoint.name:my,entrypoint.type:jar,entrypoint.workdir:[^,]+"
+    Paths.get("my.jar").toFile()            | null            | "entrypoint.name:my,entrypoint.type:jar,entrypoint.workdir:[^,]+"
+    null                                    | "com.test.Main" | "entrypoint.name:com.test.main,entrypoint.type:class,entrypoint.workdir:[^,]+"
     null                                    | null            | "entrypoint.workdir:[^,]+"
   }
 
@@ -56,9 +56,9 @@ class ProcessTagsForkedTest extends DDSpecification {
     System.clearProperty("jboss.server.name")
     where:
     jbossHome             | mode              | serverName   | expected
-    "/opt/jboss/myserver" | "[Standalone]"    | "standalone" | "entrypoint.basedir:somewhere,entrypoint.name:jboss-modules,entrypoint.workdir:.+,jboss.home:myserver,jboss.mode:standalone,server.name:standalone"
-    "/opt/jboss/myserver" | "[server1:12345]" | "server1"    | "entrypoint.basedir:somewhere,entrypoint.name:jboss-modules,entrypoint.workdir:.+,jboss.home:myserver,jboss.mode:domain,server.name:server1"
-    null                  | "[Standalone]"    | "standalone" | "entrypoint.basedir:somewhere,entrypoint.name:jboss-modules,entrypoint.workdir:[^,]+" // don't expect jboss tags since home is missing
+    "/opt/jboss/myserver" | "[Standalone]"    | "standalone" | "entrypoint.basedir:somewhere,entrypoint.name:jboss-modules,entrypoint.type:jar,entrypoint.workdir:.+,jboss.home:myserver,jboss.mode:standalone,server.name:standalone"
+    "/opt/jboss/myserver" | "[server1:12345]" | "server1"    | "entrypoint.basedir:somewhere,entrypoint.name:jboss-modules,entrypoint.type:jar,entrypoint.workdir:.+,jboss.home:myserver,jboss.mode:domain,server.name:server1"
+    null                  | "[Standalone]"    | "standalone" | "entrypoint.basedir:somewhere,entrypoint.name:jboss-modules,entrypoint.type:jar,entrypoint.workdir:[^,]+" // don't expect jboss tags since home is missing
   }
 
   def 'should not calculate process tags by default'() {