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ru.yandex.clickhouse.ClickHouseConnectionImpl Maven / Gradle / Ivy
package ru.yandex.clickhouse;
import java.io.IOException;
import java.sql.*;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
import org.apache.http.impl.client.CloseableHttpClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import ru.yandex.clickhouse.except.ClickHouseUnknownException;
import ru.yandex.clickhouse.settings.ClickHouseProperties;
import ru.yandex.clickhouse.util.ClickHouseHttpClientBuilder;
import ru.yandex.clickhouse.util.LogProxy;
public class ClickHouseConnectionImpl implements ClickHouseConnection {
private static final Logger log = LoggerFactory.getLogger(ClickHouseConnectionImpl.class);
private final CloseableHttpClient httpclient;
private final ClickHouseProperties properties;
private ClickHouseDataSource dataSource;
private boolean closed = false;
public ClickHouseConnectionImpl(String url) {
this(url, new ClickHouseProperties());
}
public ClickHouseConnectionImpl(String url, Properties info) {
this(url, new ClickHouseProperties(info));
}
public ClickHouseConnectionImpl(String url, ClickHouseProperties properties) {
this.dataSource = new ClickHouseDataSource(url, properties);
this.properties = dataSource.getProperties();
ClickHouseHttpClientBuilder clientBuilder = new ClickHouseHttpClientBuilder(properties);
log.debug("new connection");
httpclient = clientBuilder.buildClient();
}
@Override
public Statement createStatement() throws SQLException {
return LogProxy.wrap(ClickHouseStatement.class, new ClickHouseStatementImpl(httpclient, dataSource, this, properties));
}
public ClickHouseStatement createClickHouseStatement() throws SQLException {
return LogProxy.wrap(ClickHouseStatement.class, new ClickHouseStatementImpl(httpclient, dataSource, this, properties));
}
public PreparedStatement createPreparedStatement(String sql) throws SQLException {
return LogProxy.wrap(PreparedStatement.class, new ClickHousePreparedStatementImpl(httpclient, dataSource, this, properties, sql));
}
public ClickHousePreparedStatement createClickHousePreparedStatement(String sql) throws SQLException {
return LogProxy.wrap(ClickHousePreparedStatement.class, new ClickHousePreparedStatementImpl(httpclient, dataSource, this, properties, sql));
}
@Override
public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
return createStatement(resultSetType, resultSetConcurrency, ResultSet.CLOSE_CURSORS_AT_COMMIT);
}
@Override
public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
if (resultSetType != ResultSet.TYPE_FORWARD_ONLY && resultSetConcurrency != ResultSet.CONCUR_READ_ONLY
&& resultSetHoldability != ResultSet.CLOSE_CURSORS_AT_COMMIT) {
throw new SQLFeatureNotSupportedException();
}
return createStatement();
}
@Override
public PreparedStatement prepareStatement(String sql) throws SQLException {
return createPreparedStatement(sql);
}
@Override
public CallableStatement prepareCall(String sql) throws SQLException {
throw new SQLFeatureNotSupportedException();
}
@Override
public String nativeSQL(String sql) throws SQLException {
throw new SQLFeatureNotSupportedException();
}
@Override
public void setAutoCommit(boolean autoCommit) throws SQLException {
}
@Override
public boolean getAutoCommit() throws SQLException {
return false;
}
@Override
public void commit() throws SQLException {
}
@Override
public void rollback() throws SQLException {
}
@Override
public void close() throws SQLException {
try {
httpclient.close();
closed = true;
} catch (IOException e) {
throw new ClickHouseUnknownException("HTTP client close exception", e, dataSource.getHost(), dataSource.getPort());
}
}
@Override
public boolean isClosed() throws SQLException {
return closed;
}
@Override
public DatabaseMetaData getMetaData() throws SQLException {
return LogProxy.wrap(DatabaseMetaData.class, new ClickHouseDatabaseMetadata(dataSource.getUrl(), this));
}
@Override
public void setReadOnly(boolean readOnly) throws SQLException {
}
@Override
public boolean isReadOnly() throws SQLException {
return false;
}
@Override
public void setCatalog(String catalog) throws SQLException {
}
@Override
public String getCatalog() throws SQLException {
return null;
}
@Override
public void setTransactionIsolation(int level) throws SQLException {
}
@Override
public int getTransactionIsolation() throws SQLException {
return 0;
}
@Override
public SQLWarning getWarnings() throws SQLException {
return null;
}
@Override
public void clearWarnings() throws SQLException {
}
@Override
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
return createPreparedStatement(sql);
}
@Override
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
throw new SQLFeatureNotSupportedException();
}
@Override
public Map> getTypeMap() throws SQLException {
return null;
}
@Override
public void setTypeMap(Map> map) throws SQLException {
}
@Override
public void setHoldability(int holdability) throws SQLException {
}
@Override
public int getHoldability() throws SQLException {
return 0;
}
@Override
public Savepoint setSavepoint() throws SQLException {
throw new SQLFeatureNotSupportedException();
}
@Override
public Savepoint setSavepoint(String name) throws SQLException {
throw new SQLFeatureNotSupportedException();
}
@Override
public void rollback(Savepoint savepoint) throws SQLException {
}
@Override
public void releaseSavepoint(Savepoint savepoint) throws SQLException {
throw new SQLFeatureNotSupportedException();
}
@Override
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
return createPreparedStatement(sql);
}
@Override
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
throw new SQLFeatureNotSupportedException();
}
@Override
public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
throw new SQLFeatureNotSupportedException();
}
@Override
public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
throw new SQLFeatureNotSupportedException();
}
@Override
public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
throw new SQLFeatureNotSupportedException();
}
@Override
public Clob createClob() throws SQLException {
return null;
}
@Override
public Blob createBlob() throws SQLException {
return null;
}
@Override
public NClob createNClob() throws SQLException {
return null;
}
@Override
public SQLXML createSQLXML() throws SQLException {
return null;
}
@Override
public boolean isValid(int timeout) throws SQLException {
// todo timeout
Statement statement = createStatement();
statement.execute("SELECT 1");
statement.close();
// no exception - fine
return true;
}
@Override
public void setClientInfo(String name, String value) throws SQLClientInfoException {
}
@Override
public void setClientInfo(Properties properties) throws SQLClientInfoException {
}
@Override
public String getClientInfo(String name) throws SQLException {
return null;
}
@Override
public Properties getClientInfo() throws SQLException {
return null;
}
@Override
public Array createArrayOf(String typeName, Object[] elements) throws SQLException {
return new ClickHouseArray(elements);
}
@Override
public Struct createStruct(String typeName, Object[] attributes) throws SQLException {
return null;
}
@Override
public T unwrap(Class iface) throws SQLException {
return null;
}
@Override
public boolean isWrapperFor(Class iface) throws SQLException {
return false;
}
public void setSchema(String schema) throws SQLException {
}
public String getSchema() throws SQLException {
return null;
}
public void abort(Executor executor) throws SQLException {
this.close();
}
public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException {
}
public int getNetworkTimeout() throws SQLException {
return 0;
}
void cleanConnections() {
httpclient.getConnectionManager().closeExpiredConnections();
httpclient.getConnectionManager().closeIdleConnections(2 * properties.getSocketTimeout(), TimeUnit.MILLISECONDS);
}
}
