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116 lines
4.8 KiB
Java
116 lines
4.8 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 [%PROJECT%:%DATASET%.%TABLE%]")
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.put("PROJECT", projectId)
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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 to point at snapshot table %s.",
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String.format("[%s:%s.%s]", projectId, LATEST_SNAPSHOT_DATASET, kindName),
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String.format("[%s:%s.%s]", projectId, datasetId, 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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