Package com.clickhouse.client.http

Class ApacheHttpConnectionImpl

java.lang.Object

com.clickhouse.client.http.ClickHouseHttpConnection

com.clickhouse.client.http.ApacheHttpConnectionImpl

All Implemented Interfaces:

AutoCloseable

public class ApacheHttpConnectionImpl
extends ClickHouseHttpConnection

Created by wujianchao on 2022/12/1.

Field Summary

Fields inherited from class com.clickhouse.client.http.ClickHouseHttpConnection

config, defaultHeaders, rm, server, url

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ApacheHttpConnectionImpl(ClickHouseNode server, ClickHouseRequest<?> request, ExecutorService executor)

Method Summary

Modifier and Type	Method	Description
void	close()
protected final String	getDefaultUserAgent()
protected boolean	isReusable()	Checks whether the connection is reusable or not.
boolean	ping(int timeout)	Sends a request to <baseUrl>/ping for liveness detection.
protected ClickHouseHttpResponse	post(ClickHouseConfig config, String sql, com.clickhouse.data.ClickHouseInputStream data, List<com.clickhouse.data.ClickHouseExternalTable> tables, com.clickhouse.data.ClickHouseOutputStream output, String url, Map<String,String> headers, Runnable postCloseAction)	Posts query and data to server.

Methods inherited from class com.clickhouse.client.http.ClickHouseHttpConnection

closeQuietly, createDefaultHeaders, getBaseUrl, getProxy, getUserAgent, mergeHeaders, parseErrorFromException, postData, query, query, query, query, update, update, update, update

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ApacheHttpConnectionImpl

protected ApacheHttpConnectionImpl(ClickHouseNode server,
 ClickHouseRequest<?> request,
 ExecutorService executor)
                            throws IOException

Throws:

IOException

Method Details

getDefaultUserAgent

protected final String getDefaultUserAgent()

Overrides:

getDefaultUserAgent in class ClickHouseHttpConnection

isReusable

protected boolean isReusable()

Description copied from class: ClickHouseHttpConnection

Checks whether the connection is reusable or not. This method will be called in ClickHouseHttpClient.checkConnection(ClickHouseHttpConnection, ClickHouseNode, ClickHouseNode, ClickHouseRequest) for making a decision of whether to create a new connection. In addition to that, if a connection is NOT reusable, it will be closed right after corresponding ClickHouseResponse is closed.

Overrides:

isReusable in class ClickHouseHttpConnection

Returns:

true if it's reusable; false otherwise

post

protected ClickHouseHttpResponse post(ClickHouseConfig config,
 String sql,
 com.clickhouse.data.ClickHouseInputStream data,
 List<com.clickhouse.data.ClickHouseExternalTable> tables,
 com.clickhouse.data.ClickHouseOutputStream output,
 String url,
 Map<String,String> headers,
 Runnable postCloseAction)
                               throws IOException

Description copied from class: ClickHouseHttpConnection

Posts query and data to server.

Specified by:

post in class ClickHouseHttpConnection

Parameters:

config - non-null configuration

sql - non-blank query

data - optionally input stream for batch updating

tables - optionally external tables for query

output - optionally output stream

url - optionally url

headers - optionally request headers

postCloseAction - optionally post action

Returns:

response

Throws:

IOException - when error occured posting request and/or server failed to respond

ping

public boolean ping(int timeout)

Description copied from class: ClickHouseHttpConnection

Sends a request to <baseUrl>/ping for liveness detection.

Specified by:

ping in class ClickHouseHttpConnection

Parameters:

timeout - timeout in millisecond

Returns:

true if server responded Ok.; false otherwise

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Overrides:

close in class ClickHouseHttpConnection

Throws:

IOException