[
https://issues.apache.org/jira/browse/GOBBLIN-1569?focusedWorklogId=673350&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-673350
]
ASF GitHub Bot logged work on GOBBLIN-1569:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 02/Nov/21 17:49
Start Date: 02/Nov/21 17:49
Worklog Time Spent: 10m
Work Description: phet commented on a change in pull request #3421:
URL: https://github.com/apache/gobblin/pull/3421#discussion_r740665535
##########
File path:
gobblin-runtime/src/main/java/org/apache/gobblin/runtime/spec_serde/JobSpecDeserializer.java
##########
@@ -0,0 +1,83 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.gobblin.runtime.spec_serde;
+
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
+import java.io.IOException;
+import java.io.StringReader;
+import java.lang.reflect.Type;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.Optional;
+import java.util.Properties;
+import org.apache.gobblin.runtime.api.JobSpec;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public class JobSpecDeserializer implements JsonDeserializer<JobSpec> {
+
+ private static final Logger LOGGER =
LoggerFactory.getLogger(JobSpecDeserializer.class);
+
+ @Override
+ public JobSpec deserialize(JsonElement json, Type typeOfT,
JsonDeserializationContext context) {
+ JsonObject jsonObject = json.getAsJsonObject();
+
+ String uri =
jsonObject.get(JobSpecSerializer.JOB_SPEC_URI_KEY).getAsString();
+ String version =
jsonObject.get(JobSpecSerializer.JOB_SPEC_VERSION_KEY).getAsString();
+ String description =
jsonObject.get(JobSpecSerializer.JOB_SPEC_DESCRIPTION_KEY).getAsString();
+ Optional<URI> templateURI;
+ try {
+ templateURI =
Optional.ofNullable(jsonObject.get(JobSpecSerializer.JOB_SPEC_TEMPLATE_URI_KEY).getAsString()).map(s
-> {
+ try {
+ return new URI(s);
+ } catch (URISyntaxException e) {
+ LOGGER.warn(String.format("error deserializing '%s' as a URI",
+
jsonObject.get(JobSpecSerializer.JOB_SPEC_TEMPLATE_URI_KEY).getAsString()), e);
+ throw new RuntimeException(e);
+ }
+ });
+ } catch (RuntimeException e) {
+ templateURI = Optional.empty();
+ }
Review comment:
first off, I agree it's unsatisfying. (I welcome any tips toward
finessing java's checked exceptions!)
the transformation you suggest doesn't protect against passing `null` to the
`URI` ctor. that's why I was working (via `map`) *within* the `Optional`.
still, you did helped spot a NPE bug from the parens closed in the wrong place.
we need:
```
Optional.ofNullable(jsonObj.get(...)).map
```
not the potentially explosive:
```
Optional.ofNullable(jsonObj.get(...).getAsString()).map
```
in addition, I'll use `Optional.flatMap` to eliminate the second level of
exception handling. I'll push those corrections, and you please tell me if you
see any other potential improvement.
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Issue Time Tracking
-------------------
Worklog Id: (was: 673350)
Time Spent: 2h (was: 1h 50m)
> Provide JobCatalog backed by MySQL
> ----------------------------------
>
> Key: GOBBLIN-1569
> URL: https://issues.apache.org/jira/browse/GOBBLIN-1569
> Project: Apache Gobblin
> Issue Type: New Feature
> Components: gobblin-service
> Reporter: Kip Kohn
> Assignee: Abhishek Tiwari
> Priority: Major
> Time Spent: 2h
> Remaining Estimate: 0h
>
> Present storage bindings for `JobCatalog` are in-memory or file system.
> While the latter is durable, it requires an NFS-like capability for
> cross-instance sharing.
> Support alternative multi-instance backing through MySQL, precluding the need
> for NFS.
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