chore: Migrate tasks synth.py to bazel (#101)

The changes in grpc stubs are caused by the gRPC upgrade from 1.10 (more than a year old) to 1.27 (same version which is used as runtime dependency).

The shell scripts chagnes are not related to bazel change.

grpc-google-cloud-tasks-v2/clirr-ignored-differences.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- see http://www.mojohaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
+<differences>
+  <difference>
+    <!-- TODO: remove after 1.28.3 released -->
+    <differenceType>6001</differenceType>
+    <className>com/google/cloud/tasks/v2/*Grpc</className>
+    <field>METHOD_*</field>
+  </difference>
+</differences>

grpc-google-cloud-tasks-v2beta2/clirr-ignored-differences.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- see http://www.mojohaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
+<differences>
+  <difference>
+    <!-- TODO: remove after 1.28.3 released -->
+    <differenceType>6001</differenceType>
+    <className>com/google/cloud/tasks/v2beta2/*Grpc</className>
+    <field>METHOD_*</field>
+  </difference>
+</differences>

grpc-google-cloud-tasks-v2beta3/clirr-ignored-differences.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- see http://www.mojohaus.org/clirr-maven-plugin/examples/ignored-differences.html -->
+<differences>
+  <difference>
+    <!-- TODO: remove after 1.28.3 released -->
+    <differenceType>6001</differenceType>
+    <className>com/google/cloud/tasks/v2beta3/*Grpc</className>
+    <field>METHOD_*</field>
+  </difference>
+</differences>

synth.metadata

@@ -1,13 +1,6 @@
 {
   "updateTime": "2020-03-25T19:06:04.782527Z",
   "sources": [
-    {
-      "generator": {
-        "name": "artman",
-        "version": "1.1.1",
-        "dockerImage": "googleapis/artman@sha256:5ef340c8d9334719bc5c6981d95f4a5d2737b0a6a24f2b9a0d430e96fff85c5b"
-      }
-    },
     {
       "git": {
         "name": "googleapis",
@@ -33,8 +26,7 @@
         "apiName": "tasks",
         "apiVersion": "v2beta2",
         "language": "java",
-        "generator": "gapic",
-        "config": "google/cloud/tasks/artman_cloudtasks_v2beta2.yaml"
+        "generator": "bazel"
       }
     },
     {
@@ -43,8 +35,7 @@
         "apiName": "tasks",
         "apiVersion": "v2beta3",
         "language": "java",
-        "generator": "gapic",
-        "config": "google/cloud/tasks/artman_cloudtasks_v2beta3.yaml"
+        "generator": "bazel"
       }
     },
     {
@@ -53,8 +44,7 @@
         "apiName": "tasks",
         "apiVersion": "v2",
         "language": "java",
-        "generator": "gapic",
-        "config": "google/cloud/tasks/artman_cloudtasks_v2.yaml"
+        "generator": "bazel"
       }
     }
   ]

synth.py

@@ -20,7 +20,7 @@
 
 AUTOSYNTH_MULTIPLE_COMMITS = True
 
-gapic = gcp.GAPICGenerator()
+gapic = gcp.GAPICBazel()
 
 service = 'tasks'
 versions = ['v2beta2', 'v2beta3', 'v2']
@@ -52,32 +52,34 @@
     library = gapic.java_library(
         service=service,
         version=version,
-        config_path=config_pattern.format(version=version),
-        artman_output_name='')
+        bazel_target=f'//google/cloud/{service}/{version}:google-cloud-{service}-{version}-java',
+    )
+
+    library = library / f"google-cloud-{service}-{version}-java"
 
     package_name = f'com.google.cloud.{service}.{version}'
-    java.fix_proto_headers(library / f'proto-google-cloud-{service}-{version}')
-    java.fix_grpc_headers(library / f'grpc-google-cloud-{service}-{version}', package_name)
+    java.fix_proto_headers(library / f'proto-google-cloud-{service}-{version}-java')
+    java.fix_grpc_headers(library / f'grpc-google-cloud-{service}-{version}-java', package_name)
 
     s.replace(
-        library / f'gapic-google-cloud-{service}-{version}/src/**/CloudTasksClient.java',
+        library / f'gapic-google-cloud-{service}-{version}-java/src/**/CloudTasksClient.java',
         GET_IAM_POLICY_PREVIOUS,
         "\g<1>\n\n" + GET_IAM_POLICY
     )
     s.replace(
-        library / f'gapic-google-cloud-{service}-{version}/src/**/CloudTasksClient.java',
+        library / f'gapic-google-cloud-{service}-{version}-java/src/**/CloudTasksClient.java',
         SET_IAM_POLICY_PREVIOUS,
         "\g<1>\n\n" + SET_IAM_POLICY
     )
     s.replace(
-        library / f'gapic-google-cloud-{service}-{version}/src/**/CloudTasksClient.java',
+        library / f'gapic-google-cloud-{service}-{version}-java/src/**/CloudTasksClient.java',
         TEST_IAM_POLICY_PREVIOUS,
         "\g<1>\n\n" + TEST_IAM_POLICY
     )
 
-    s.copy(library / f'gapic-google-cloud-{service}-{version}/src', f'google-cloud-{service}/src')
-    s.copy(library / f'grpc-google-cloud-{service}-{version}/src', f'grpc-google-cloud-{service}-{version}/src')
-    s.copy(library / f'proto-google-cloud-{service}-{version}/src', f'proto-google-cloud-{service}-{version}/src')
+    s.copy(library / f'gapic-google-cloud-{service}-{version}-java/src', f'google-cloud-{service}/src')
+    s.copy(library / f'grpc-google-cloud-{service}-{version}-java/src', f'grpc-google-cloud-{service}-{version}/src')
+    s.copy(library / f'proto-google-cloud-{service}-{version}-java/src', f'proto-google-cloud-{service}-{version}/src')
 
     java.format_code(f'google-cloud-{service}/src')
     java.format_code(f'grpc-google-cloud-{service}-{version}/src')