Package com.clickhouse.client.api.internal

Class HttpAPIClientHelper

java.lang.Object

com.clickhouse.client.api.internal.HttpAPIClientHelper

public class HttpAPIClientHelper
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	HttpAPIClientHelper.MeteredManagedHttpClientConnectionFactory

Constructor Summary

Constructors

Constructor	Description
HttpAPIClientHelper(Map<String,String> configuration, Object metricsRegistry, boolean initSslContext)

Method Summary

Modifier and Type	Method	Description
void	close()
org.apache.hc.client5.http.impl.classic.CloseableHttpClient	createHttpClient(boolean initSslContext)
SSLContext	createSSLContext()	Creates or returns default SSL context.
org.apache.hc.core5.http.ClassicHttpResponse	executeRequest(ClickHouseNode server, Map<String,Object> requestConfig, org.apache.hc.core5.io.IOCallback<OutputStream> writeCallback)
static int	getHeaderInt(org.apache.hc.core5.http.Header header, int defaultValue)
static String	getHeaderVal(org.apache.hc.core5.http.Header header, String defaultValue)
static <T> T	getHeaderVal(org.apache.hc.core5.http.Header header, T defaultValue, Function<String,T> converter)
static Map<String,String>	parseUrlParameters(URL url)	Parses URL parameters.
Exception	readError(org.apache.hc.core5.http.ClassicHttpResponse httpResponse)	Reads status line and if error tries to parse response body to get server error message.
boolean	shouldRetry(Throwable ex, Map<String,Object> requestSettings)
RuntimeException	wrapException(String message, Exception cause)

Methods inherited from class java.lang.Object

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

Constructor Details

HttpAPIClientHelper

public HttpAPIClientHelper(Map<String,String> configuration,
 Object metricsRegistry,
 boolean initSslContext)

Method Details

createSSLContext

public SSLContext createSSLContext()

Creates or returns default SSL context.

Returns:

SSLContext

createHttpClient

public org.apache.hc.client5.http.impl.classic.CloseableHttpClient createHttpClient(boolean initSslContext)

readError

public Exception readError(org.apache.hc.core5.http.ClassicHttpResponse httpResponse)

Reads status line and if error tries to parse response body to get server error message.

Parameters:

httpResponse - - HTTP response

Returns:

executeRequest

public org.apache.hc.core5.http.ClassicHttpResponse executeRequest(ClickHouseNode server,
 Map<String,Object> requestConfig,
 org.apache.hc.core5.io.IOCallback<OutputStream> writeCallback)
                                                            throws IOException

Throws:

IOException

getHeaderInt

public static int getHeaderInt(org.apache.hc.core5.http.Header header,
 int defaultValue)

getHeaderVal

public static String getHeaderVal(org.apache.hc.core5.http.Header header,
 String defaultValue)

getHeaderVal

public static <T> T getHeaderVal(org.apache.hc.core5.http.Header header,
 T defaultValue,
 Function<String,T> converter)

shouldRetry

public boolean shouldRetry(Throwable ex,
 Map<String,Object> requestSettings)

wrapException

public RuntimeException wrapException(String message,
 Exception cause)

parseUrlParameters

public static Map<String,String> parseUrlParameters(URL url)

Parses URL parameters.

Parameters:

url -

Returns:

Map of parameters

close

public void close()