feat(bigquery): Addressed comments and add unit test

HemangChothani · HemangChothani · commit ad758aa87b59 · 2020-02-12T14:45:22.000+05:30
diff --git a/google/cloud/bigquery/client.py b/google/cloud/bigquery/client.py
@@ -57,6 +57,7 @@
 from google.cloud.bigquery._helpers import _record_field_to_json
 from google.cloud.bigquery._helpers import _str_or_none
 from google.cloud.bigquery._helpers import _verify_job_config_type
+from google.cloud.bigquery._helpers import _del_sub_prop
 from google.cloud.bigquery._http import Connection
 from google.cloud.bigquery import _pandas_helpers
 from google.cloud.bigquery.dataset import Dataset
@@ -1338,9 +1339,7 @@ def create_job(self, job_config, retry=DEFAULT_RETRY):
             load_job_config = google.cloud.bigquery.job.LoadJobConfig.from_api_repr(
                 job_config
             )
-            destination = TableReference.from_api_repr(
-                job_config["load"]["destinationTable"]
-            )
+            destination = _get_sub_prop(job_config, ["load", "destinationTable"])
             source_uris = _get_sub_prop(job_config, ["load", "sourceUris"])
             return self.load_table_from_uri(
                 source_uris, destination, job_config=load_job_config, retry=retry
@@ -1349,14 +1348,12 @@ def create_job(self, job_config, retry=DEFAULT_RETRY):
             copy_job_config = google.cloud.bigquery.job.CopyJobConfig.from_api_repr(
                 job_config
             )
-            copy_resource = job_config["copy"]
-            destination = TableReference.from_api_repr(
-                copy_resource["destinationTable"]
-            )
+            destination = _get_sub_prop(job_config, ["copy", "destinationTable"])
             sources = []
-            source_configs = copy_resource.get("sourceTables")
+            source_configs = _get_sub_prop(job_config, ["copy", "sourceTables"])
+
             if source_configs is None:
-                source_configs = [copy_resource["sourceTable"]]
+                source_configs = [_get_sub_prop(job_config, ["copy", "sourceTable"])]
             for source_config in source_configs:
                 table_ref = TableReference.from_api_repr(source_config)
                 sources.append(table_ref)
@@ -1367,13 +1364,13 @@ def create_job(self, job_config, retry=DEFAULT_RETRY):
             extract_job_config = google.cloud.bigquery.job.ExtractJobConfig.from_api_repr(
                 job_config
             )
-            source = TableReference.from_api_repr(job_config["extract"]["sourceTable"])
+            source = _get_sub_prop(job_config, ["extract", "sourceTable"])
             destination_uris = _get_sub_prop(job_config, ["extract", "destinationUris"])
             return self.extract_table(
                 source, destination_uris, job_config=extract_job_config, retry=retry
             )
         elif "query" in job_config:
-            del job_config["query"]["destinationTable"]
+            _del_sub_prop(job_config, ["query", "destinationTable"])
             query_job_config = google.cloud.bigquery.job.QueryJobConfig.from_api_repr(
                 job_config
             )
diff --git a/tests/unit/test_client.py b/tests/unit/test_client.py
@@ -2893,6 +2893,68 @@ def test_create_job_query_config(self):
             configuration, "google.cloud.bigquery.client.Client.query",
         )
 
+    def test_create_job_query_config_w_rateLimitExceeded_error(self):
+        from google.cloud.exceptions import Forbidden
+        from google.cloud.bigquery.retry import DEFAULT_RETRY
+
+        query = "select count(*) from persons"
+        configuration = {
+            "query": {
+                "query": query,
+                "useLegacySql": False,
+                "destinationTable": {"tableId": "table_id"},
+            }
+        }
+        resource = {
+            "jobReference": {"projectId": self.PROJECT, "jobId": mock.ANY},
+            "configuration": {
+                "query": {
+                    "query": query,
+                    "useLegacySql": False,
+                    "destinationTable": {
+                        "projectId": self.PROJECT,
+                        "datasetId": self.DS_ID,
+                        "tableId": "query_destination_table",
+                    },
+                }
+            },
+        }
+        data_without_destination = {
+            "jobReference": {"projectId": self.PROJECT, "jobId": mock.ANY},
+            "configuration": {"query": {"query": query, "useLegacySql": False}},
+        }
+
+        creds = _make_credentials()
+        http = object()
+        retry = DEFAULT_RETRY.with_deadline(1).with_predicate(
+            lambda exc: isinstance(exc, Forbidden)
+        )
+        client = self._make_one(project=self.PROJECT, credentials=creds, _http=http)
+
+        api_request_patcher = mock.patch.object(
+            client._connection,
+            "api_request",
+            side_effect=[
+                Forbidden("", errors=[{"reason": "rateLimitExceeded"}]),
+                resource,
+            ],
+        )
+
+        with api_request_patcher as fake_api_request:
+            job = client.create_job(job_config=configuration, retry=retry)
+
+        self.assertEqual(job.destination.table_id, "query_destination_table")
+        self.assertEqual(len(fake_api_request.call_args_list), 2)  # was retried once
+        self.assertEqual(
+            fake_api_request.call_args_list[1],
+            mock.call(
+                method="POST",
+                path="/projects/PROJECT/jobs",
+                data=data_without_destination,
+                timeout=None,
+            ),
+        )
+
     def test_create_job_w_invalid_job_config(self):
         configuration = {"unknown": {}}
         creds = _make_credentials()
