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docs: Add ingestion from GCS Java sample
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samples/snippets/src/main/java/pubsub/CreateTopicWithCloudStorageIngestionExample.java
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/* | ||
* Copyright 2024 Google LLC | ||
* | ||
* Licensed 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. | ||
*/ | ||
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package pubsub; | ||
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// [START pubsub_create_topic_with_cloud_storage_ingestion] | ||
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import com.google.cloud.pubsub.v1.TopicAdminClient; | ||
import com.google.protobuf.util.Timestamps; | ||
import com.google.pubsub.v1.IngestionDataSourceSettings; | ||
import com.google.pubsub.v1.Topic; | ||
import com.google.pubsub.v1.TopicName; | ||
import java.io.IOException; | ||
import java.text.ParseException; | ||
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public class CreateTopicWithCloudStorageIngestionExample { | ||
public static void main(String... args) throws Exception { | ||
// TODO(developer): Replace these variables before running the sample. | ||
String projectId = "cps-prod-ingestion-prober"; | ||
String topicId = "mike-test-id"; | ||
// Cloud Storage ingestion settings. | ||
// bucket and inputFormat are required arguments. | ||
String bucket = "prieto-test-bucket"; | ||
String inputFormat = "text"; | ||
String textDelimiter = "\n"; | ||
String matchGlob = "**.txt"; | ||
String minimumObjectCreateTime = "YYYY-MM-DDThh:mm:ssZ"; | ||
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createTopicWithCloudStorageIngestionExample( | ||
projectId, topicId, bucket, inputFormat, textDelimiter, matchGlob, minimumObjectCreateTime); | ||
} | ||
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public static void createTopicWithCloudStorageIngestionExample( | ||
String projectId, | ||
String topicId, | ||
String bucket, | ||
String inputFormat, | ||
String textDelimiter, | ||
String matchGlob, | ||
String minimumObjectCreateTime) | ||
throws IOException { | ||
try (TopicAdminClient topicAdminClient = TopicAdminClient.create()) { | ||
TopicName topicName = TopicName.of(projectId, topicId); | ||
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IngestionDataSourceSettings.CloudStorage.Builder cloudStorageBuilder = | ||
IngestionDataSourceSettings.CloudStorage.newBuilder().setBucket(bucket); | ||
switch (inputFormat) { | ||
case "text": | ||
cloudStorageBuilder.setTextFormat( | ||
IngestionDataSourceSettings.CloudStorage.TextFormat.newBuilder() | ||
.setDelimiter(textDelimiter) | ||
.build()); | ||
break; | ||
case "avro": | ||
cloudStorageBuilder.setAvroFormat( | ||
IngestionDataSourceSettings.CloudStorage.AvroFormat.getDefaultInstance()); | ||
break; | ||
case "pubsub_avro": | ||
cloudStorageBuilder.setPubsubAvroFormat( | ||
IngestionDataSourceSettings.CloudStorage.PubSubAvroFormat.getDefaultInstance()); | ||
break; | ||
default: | ||
throw new IllegalArgumentException( | ||
"inputFormat must be in ('text', 'avro', 'pubsub_avro'); got value: " + inputFormat); | ||
} | ||
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if (matchGlob != null && !matchGlob.isEmpty()) { | ||
cloudStorageBuilder.setMatchGlob(matchGlob); | ||
} | ||
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if (minimumObjectCreateTime != null && !minimumObjectCreateTime.isEmpty()) { | ||
try { | ||
cloudStorageBuilder.setMinimumObjectCreateTime(Timestamps.parse(minimumObjectCreateTime)); | ||
} catch (ParseException e) { | ||
System.err.println("Unable to parse timestamp: " + minimumObjectCreateTime); | ||
} | ||
} | ||
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IngestionDataSourceSettings ingestionDataSourceSettings = | ||
IngestionDataSourceSettings.newBuilder() | ||
.setCloudStorage(cloudStorageBuilder.build()) | ||
.build(); | ||
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Topic topic = | ||
topicAdminClient.createTopic( | ||
Topic.newBuilder() | ||
.setName(topicName.toString()) | ||
.setIngestionDataSourceSettings(ingestionDataSourceSettings) | ||
.build()); | ||
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System.out.println( | ||
"Created topic with Cloud Storage ingestion settings: " + topic.getAllFields()); | ||
} | ||
} | ||
} | ||
// [END pubsub_create_topic_with_cloud_storage_ingestion] |