Merge pull request #468 from codacy/add-drone-ci-support

Add Drone CI as new commitUuid provider

Author: DMarinhoCodacy

src/main/scala/com/codacy/rules/commituuid/CommitUUIDProvider.scala

@@ -71,6 +71,7 @@ object CommitUUIDProvider extends LogSupport {
     CodefreshCIProvider,
     CodeshipCIProvider,
     DockerProvider,
+    DroneCIProvider,
     GitHubActionProvider,
     GitlabProvider,
     GreenhouseCIProvider,

src/main/scala/com/codacy/rules/commituuid/providers/DroneCIProvider.scala

@@ -0,0 +1,16 @@
+package com.codacy.rules.commituuid.providers
+
+import com.codacy.model.configuration.CommitUUID
+import com.codacy.rules.commituuid.CommitUUIDProvider
+
+/* Drone CI Provider */
+object DroneCIProvider extends CommitUUIDProvider {
+  val name: String = "Drone CI"
+
+  override def validateEnvironment(environment: Map[String, String]): Boolean = {
+    environment.get("CI").contains("true") && environment.get("DRONE").contains("true")
+  }
+
+  override def getValidCommitUUID(environment: Map[String, String]): Either[String, CommitUUID] =
+    parseEnvironmentVariable(environment.get("DRONE_COMMIT") orElse environment.get("DRONE_COMMIT_SHA"))
+}