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c458c05801
The dark lord Gosling designed the Java package naming system so that ownership flows from the DNS system. Since we own the domain name registry.google, it seems only appropriate that we should use google.registry as our package name.
117 lines
4.6 KiB
Java
117 lines
4.6 KiB
Java
// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.export;
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import static google.registry.request.Action.Method.POST;
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import com.google.api.client.googleapis.json.GoogleJsonResponseException;
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import com.google.api.services.bigquery.Bigquery;
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import com.google.api.services.bigquery.model.Table;
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import com.google.api.services.bigquery.model.TableReference;
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import com.google.api.services.bigquery.model.ViewDefinition;
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import com.google.appengine.api.taskqueue.TaskOptions;
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import com.google.appengine.api.taskqueue.TaskOptions.Method;
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import google.registry.bigquery.BigqueryFactory;
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import google.registry.config.ConfigModule.Config;
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import google.registry.request.Action;
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import google.registry.request.HttpException.InternalServerErrorException;
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import google.registry.request.Parameter;
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import google.registry.util.FormattingLogger;
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import google.registry.util.SqlTemplate;
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import java.io.IOException;
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import javax.inject.Inject;
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/** Update a well-known view to point at a certain datastore snapshot table in BigQuery. */
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@Action(path = UpdateSnapshotViewAction.PATH, method = POST)
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public class UpdateSnapshotViewAction implements Runnable {
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/** Headers for passing parameters into the servlet. */
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static final String UPDATE_SNAPSHOT_DATASET_ID_PARAM = "dataset";
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static final String UPDATE_SNAPSHOT_TABLE_ID_PARAM = "table";
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static final String UPDATE_SNAPSHOT_KIND_PARAM = "kind";
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static final String LATEST_SNAPSHOT_DATASET = "latest_snapshot";
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/** Servlet-specific details needed for enqueuing tasks against itself. */
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static final String QUEUE = "export-snapshot-update-view"; // See queue.xml.
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static final String PATH = "/_dr/task/updateSnapshotView"; // See web.xml.
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private static final FormattingLogger logger = FormattingLogger.getLoggerForCallerClass();
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@Inject @Parameter(UPDATE_SNAPSHOT_DATASET_ID_PARAM) String datasetId;
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@Inject @Parameter(UPDATE_SNAPSHOT_TABLE_ID_PARAM) String tableId;
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@Inject @Parameter(UPDATE_SNAPSHOT_KIND_PARAM) String kindName;
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@Inject @Config("projectId") String projectId;
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@Inject BigqueryFactory bigqueryFactory;
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@Inject UpdateSnapshotViewAction() {}
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/** Create a task for updating a snapshot view. */
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public static TaskOptions createViewUpdateTask(
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String datasetId, String tableId, String kindName) {
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return TaskOptions.Builder.withUrl(PATH)
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.method(Method.POST)
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.param(UPDATE_SNAPSHOT_DATASET_ID_PARAM, datasetId)
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.param(UPDATE_SNAPSHOT_TABLE_ID_PARAM, tableId)
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.param(UPDATE_SNAPSHOT_KIND_PARAM, kindName);
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}
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@Override
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public void run() {
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try {
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updateSnapshotView(datasetId, tableId, kindName);
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} catch (Throwable e) {
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logger.severefmt(e, "Could not update snapshot view for table %s", tableId);
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throw new InternalServerErrorException("Error in update snapshot view action");
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}
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}
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private void updateSnapshotView(String datasetId, String tableId, String kindName)
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throws IOException {
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Bigquery bigquery = bigqueryFactory.create(projectId, LATEST_SNAPSHOT_DATASET);
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updateTable(bigquery, new Table()
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.setTableReference(new TableReference()
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.setProjectId(projectId)
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.setDatasetId(LATEST_SNAPSHOT_DATASET)
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.setTableId(kindName))
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.setView(new ViewDefinition().setQuery(
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SqlTemplate.create("SELECT * FROM [%DATASET%.%TABLE%]")
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.put("DATASET", datasetId)
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.put("TABLE", tableId)
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.build())));
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logger.infofmt(
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"Updated view %s:%s to point at snapshot table %s:%s.",
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LATEST_SNAPSHOT_DATASET,
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kindName,
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datasetId,
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tableId);
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}
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private static void updateTable(Bigquery bigquery, Table table) throws IOException {
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TableReference ref = table.getTableReference();
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try {
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bigquery.tables()
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.update(ref.getProjectId(), ref.getDatasetId(), ref.getTableId(), table)
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.execute();
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} catch (GoogleJsonResponseException e) {
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if (e.getDetails().getCode() == 404) {
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bigquery.tables().insert(ref.getProjectId(), ref.getDatasetId(), table).execute();
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}
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}
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}
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}
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