/*
* 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.
*/
package com.facebook.presto.tests;
import com.facebook.presto.Session;
import com.facebook.presto.client.ClientSession;
import com.facebook.presto.client.Column;
import com.facebook.presto.client.QueryError;
import com.facebook.presto.client.QueryResults;
import com.facebook.presto.client.StatementClient;
import com.facebook.presto.metadata.QualifiedTableName;
import com.facebook.presto.metadata.QualifiedTablePrefix;
import com.facebook.presto.server.testing.TestingPrestoServer;
import com.facebook.presto.spi.type.Type;
import com.google.common.base.Function;
import com.google.common.collect.ImmutableList;
import io.airlift.http.client.HttpClient;
import io.airlift.http.client.HttpClientConfig;
import io.airlift.http.client.jetty.JettyHttpClient;
import io.airlift.json.JsonCodec;
import io.airlift.units.Duration;
import org.intellij.lang.annotations.Language;
import java.io.Closeable;
import java.util.List;
import java.util.concurrent.TimeUnit;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.collect.Iterables.transform;
import static io.airlift.json.JsonCodec.jsonCodec;
public abstract class AbstractTestingPrestoClient<T>
implements Closeable
{
private static final JsonCodec<QueryResults> QUERY_RESULTS_CODEC = jsonCodec(QueryResults.class);
private final TestingPrestoServer prestoServer;
private final Session defaultSession;
private final HttpClient httpClient;
protected AbstractTestingPrestoClient(TestingPrestoServer prestoServer,
Session defaultSession)
{
this.prestoServer = checkNotNull(prestoServer, "prestoServer is null");
this.defaultSession = checkNotNull(defaultSession, "defaultSession is null");
this.httpClient = new JettyHttpClient(
new HttpClientConfig()
.setConnectTimeout(new Duration(1, TimeUnit.DAYS))
.setReadTimeout(new Duration(10, TimeUnit.DAYS)));
}
@Override
public void close()
{
this.httpClient.close();
}
protected abstract ResultsSession<T> getResultSession(Session session);
public T execute(@Language("SQL") String sql)
{
return execute(defaultSession, sql);
}
public T execute(Session session, @Language("SQL") String sql)
{
ResultsSession<T> resultsSession = getResultSession(session);
try (StatementClient client = new StatementClient(httpClient, QUERY_RESULTS_CODEC, toClientSession(session), sql)) {
while (client.isValid()) {
QueryResults results = client.current();
resultsSession.addResults(results);
client.advance();
}
if (!client.isFailed()) {
return resultsSession.build();
}
QueryError error = client.finalResults().getError();
assert error != null;
if (error.getFailureInfo() != null) {
throw error.getFailureInfo().toException();
}
throw new RuntimeException("Query failed: " + error.getMessage());
// dump query info to console for debugging (NOTE: not pretty printed)
// JsonCodec<QueryInfo> queryInfoJsonCodec = createCodecFactory().prettyPrint().jsonCodec(QueryInfo.class);
// log.info("\n" + queryInfoJsonCodec.toJson(queryInfo));
}
}
public List<QualifiedTableName> listTables(Session session, String catalog, String schema)
{
return prestoServer.getMetadata().listTables(session, new QualifiedTablePrefix(catalog, schema));
}
public boolean tableExists(Session session, String table)
{
QualifiedTableName name = new QualifiedTableName(session.getCatalog(), session.getSchema(), table);
return prestoServer.getMetadata().getTableHandle(session, name).isPresent();
}
public Session getDefaultSession()
{
return defaultSession;
}
public TestingPrestoServer getServer()
{
return prestoServer;
}
public ClientSession toClientSession(Session connectorSession)
{
return new ClientSession(
prestoServer.getBaseUrl(),
connectorSession.getUser(),
connectorSession.getSource(),
connectorSession.getCatalog(),
connectorSession.getSchema(),
connectorSession.getTimeZoneKey().getId(),
connectorSession.getLocale(), true);
}
protected List<Type> getTypes(List<Column> columns)
{
return ImmutableList.copyOf(transform(columns, columnTypeGetter()));
}
protected Function<Column, Type> columnTypeGetter()
{
return new Function<Column, Type>()
{
@Override
public Type apply(Column column)
{
String typeName = column.getType();
Type type = prestoServer.getMetadata().getType(typeName);
if (type == null) {
throw new AssertionError("Unhandled type: " + typeName);
}
return type;
}
};
}
}