fix: use project root as sourceSet directory for proto

Author: rootcss

build.gradle

@@ -18,6 +18,14 @@ sourceSets {
         java {
             srcDir "$projectDir/build/generated/main/java"
         }
+        proto {
+            srcDir "."
+            exclude "build/**"
+            exclude ".idea/**"
+            exclude ".gradle/**"
+            exclude ".github/**"
+            exclude "docs/**"
+        }
     }
 }
 
@@ -38,9 +46,6 @@ dependencies {
     if (JavaVersion.current().isJava9Compatible()) {
         compile 'javax.annotation:javax.annotation-api:1.3.1'
     }
-
-    // Extra proto source files besides the ones residing under "src/main".
-    protobuf files("odpf")
 }
 
 
@@ -54,7 +59,10 @@ protobuf {
     }
     generateProtoTasks {
         all()*.plugins {
-
+            // incase required to generate for multiple languages
+            // refer to gradle protobuf plugin documentation: https://github.com/google/protobuf-gradle-plugin
+            // python{}
+            // go{}
         }
     }
 }