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06/22/26/extract request logic #2893

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7b2d5c1
separated request creation and execution
chernser Jun 24, 2026
70217f5
Merge branch 'main' into 06/22/26/extract_request_logic
chernser Jun 24, 2026
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134 changes: 62 additions & 72 deletions client-v2/src/main/java/com/clickhouse/client/api/Client.java
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
import com.clickhouse.client.api.insert.InsertResponse;
import com.clickhouse.client.api.insert.InsertSettings;
import com.clickhouse.client.api.internal.ClientStatisticsHolder;
import com.clickhouse.client.api.internal.ClientUtils;
import com.clickhouse.client.api.internal.CredentialsManager;
import com.clickhouse.client.api.internal.HttpAPIClientHelper;
import com.clickhouse.client.api.internal.MapUtils;
Expand All @@ -37,15 +38,15 @@
import com.clickhouse.client.api.serde.POJOSerDe;
import com.clickhouse.client.api.transport.Endpoint;
import com.clickhouse.client.api.transport.HttpEndpoint;
import com.clickhouse.client.api.transport.internal.TransportRequest;
import com.clickhouse.client.api.transport.internal.TransportResponse;
import com.clickhouse.client.config.ClickHouseClientOption;
import com.clickhouse.data.ClickHouseColumn;
import com.clickhouse.data.ClickHouseDataType;
import com.clickhouse.data.ClickHouseFormat;
import com.google.common.collect.ImmutableList;
import net.jpountz.lz4.LZ4Factory;
import org.apache.hc.core5.concurrent.DefaultThreadFactory;
import org.apache.hc.core5.http.ClassicHttpResponse;
import org.apache.hc.core5.http.Header;
import org.apache.hc.core5.http.HttpStatus;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
Expand Down Expand Up @@ -1378,43 +1379,37 @@
RuntimeException lastException = null;
for (int i = 0; i <= maxRetries; i++) {
// Execute request
try (ClassicHttpResponse httpResponse =
httpClientHelper.executeRequest(selectedEndpoint, requestSettings.getAllSettings(),
out -> {
out.write("INSERT INTO ".getBytes());
out.write(tableName.getBytes());
out.write(" \n FORMAT ".getBytes());
out.write(format.name().getBytes());
out.write(" \n".getBytes());
for (Object obj : data) {

for (POJOFieldSerializer serializer : serializersForTable) {
try {
serializer.serialize(obj, out);
} catch (InvocationTargetException | IllegalAccessException | IOException e) {
throw new DataSerializationException(obj, serializer, e);
}
}
TransportRequest transportRequest = httpClientHelper.createRequest(selectedEndpoint, requestSettings.getAllSettings(),
out -> {
out.write("INSERT INTO ".getBytes());
out.write(tableName.getBytes());
out.write(" \n FORMAT ".getBytes());
out.write(format.name().getBytes());
out.write(" \n".getBytes());
for (Object obj : data) {

for (POJOFieldSerializer serializer : serializersForTable) {
try {
serializer.serialize(obj, out);
} catch (InvocationTargetException | IllegalAccessException | IOException e) {
throw new DataSerializationException(obj, serializer, e);
}
out.close();
})) {


}
}
out.close();
});
try (TransportResponse httpResponse = httpClientHelper.executeRequest(transportRequest)) {
// Check response
if (httpResponse.getCode() == HttpStatus.SC_SERVICE_UNAVAILABLE) {
LOG.warn("Failed to get response. Server returned {}. Retrying. (Duration: {})", httpResponse.getCode(), durationSince(startTime));
if (httpResponse.getStatusCode() == HttpStatus.SC_SERVICE_UNAVAILABLE) {
LOG.warn("Failed to get response. Server returned {}. Retrying. (Duration: {})", httpResponse.getStatusCode(), durationSince(startTime));

Check failure on line 1404 in client-v2/src/main/java/com/clickhouse/client/api/Client.java

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SonarQubeCloud / SonarCloud Code Analysis

Define a constant instead of duplicating this literal "Failed to get response. Server returned {}. Retrying. (Duration: {})" 3 times. 


See more on https://sonarcloud.io/project/issues?id=ClickHouse_clickhouse-java&issues=AZ778qUhY1I2F-bSCCYB&open=AZ778qUhY1I2F-bSCCYB&pullRequest=2893
selectedEndpoint = getNextAliveNode();
continue;
}

ClientStatisticsHolder clientStats = globalClientStats.remove(operationId);
OperationMetrics metrics = new OperationMetrics(clientStats);
String summary = HttpAPIClientHelper.getHeaderVal(httpResponse.getFirstHeader(ClickHouseHttpProto.HEADER_SRV_SUMMARY), "{}");
ProcessParser.parseSummary(summary, metrics);
String queryId = HttpAPIClientHelper.getHeaderVal(httpResponse.getFirstHeader(ClickHouseHttpProto.HEADER_QUERY_ID), requestSettings.getQueryId(), String::valueOf);
metrics.operationComplete();
metrics.setQueryId(queryId);
return new InsertResponse(metrics, HttpAPIClientHelper.collectResponseHeaders(httpResponse));
OperationMetrics metrics = completeOperation(httpResponse, clientStats, requestSettings.getQueryId());

return new InsertResponse(httpResponse, metrics);
} catch (Exception e) {
String msg = requestExMsg("Insert", (i + 1), durationSince(startTime).toMillis(), requestSettings.getQueryId());
lastException = httpClientHelper.wrapException(msg, e, requestSettings.getQueryId());
Expand All @@ -1432,7 +1427,6 @@
throw (lastException == null ? new ClientException(errMsg) : lastException); };

return runAsyncOperation(supplier, requestSettings.getAllSettings());

}

/**
Expand Down Expand Up @@ -1568,7 +1562,7 @@
clientStats.start(ClientMetrics.OP_DURATION);
final ClientStatisticsHolder finalClientStats = clientStats;

Supplier<InsertResponse> responseSupplier;


final int writeBufferSize = requestSettings.getInputStreamCopyBufferSize() <= 0 ?
(int) configuration.get(ClientConfigProperties.CLIENT_NETWORK_BUFFER_SIZE.getKey()) :
Expand All @@ -1592,36 +1586,32 @@
if (requestSettings.getQueryId() == null && queryIdGenerator != null) {
requestSettings.setQueryId(queryIdGenerator.get());
}
responseSupplier = () -> {

Supplier<InsertResponse> responseSupplier = () -> {
long startTime = System.nanoTime();
// Selecting some node
Endpoint selectedEndpoint = getNextAliveNode();

RuntimeException lastException = null;
for (int i = 0; i <= retries; i++) {
// Execute request
try (ClassicHttpResponse httpResponse =
httpClientHelper.executeRequest(selectedEndpoint, requestSettings.getAllSettings(),
out -> {
writer.onOutput(out);
out.close();
})) {
TransportRequest transportRequest = httpClientHelper.createRequest(selectedEndpoint, requestSettings.getAllSettings(),
out -> {
writer.onOutput(out);
out.close();
});

try (TransportResponse httpResponse = httpClientHelper.executeRequest(transportRequest)) {

// Check response
if (httpResponse.getCode() == HttpStatus.SC_SERVICE_UNAVAILABLE) {
LOG.warn("Failed to get response. Server returned {}. Retrying. (Duration: {})", httpResponse.getCode(), durationSince(startTime));
if (httpResponse.getStatusCode() == HttpStatus.SC_SERVICE_UNAVAILABLE) {
LOG.warn("Failed to get response. Server returned {}. Retrying. (Duration: {})", httpResponse.getStatusCode(), durationSince(startTime));
selectedEndpoint = getNextAliveNode();
continue;
}

OperationMetrics metrics = new OperationMetrics(finalClientStats);
String summary = HttpAPIClientHelper.getHeaderVal(httpResponse.getFirstHeader(ClickHouseHttpProto.HEADER_SRV_SUMMARY), "{}");
ProcessParser.parseSummary(summary, metrics);
String queryId = HttpAPIClientHelper.getHeaderVal(httpResponse.getFirstHeader(ClickHouseHttpProto.HEADER_QUERY_ID), requestSettings.getQueryId(), String::valueOf);
metrics.operationComplete();
metrics.setQueryId(queryId);
return new InsertResponse(metrics, HttpAPIClientHelper.collectResponseHeaders(httpResponse));
OperationMetrics metrics = completeOperation(httpResponse, finalClientStats, requestSettings.getQueryId());
return new InsertResponse(httpResponse, metrics);
} catch (Exception e) {
String msg = requestExMsg("Insert", (i + 1), durationSince(startTime).toMillis(), requestSettings.getQueryId());
lastException = httpClientHelper.wrapException(msg, e, requestSettings.getQueryId());
Expand Down Expand Up @@ -1728,38 +1718,28 @@
Endpoint selectedEndpoint = getNextAliveNode();
RuntimeException lastException = null;
for (int i = 0; i <= retries; i++) {
ClassicHttpResponse httpResponse = null;
TransportRequest request = httpClientHelper.createRequest(selectedEndpoint, requestSettings.getAllSettings(), sqlQuery);
TransportResponse transportResp = null;
try {
httpResponse = httpClientHelper.executeRequest(selectedEndpoint,
requestSettings.getAllSettings(),
sqlQuery);
transportResp = httpClientHelper.executeRequest(request);
// Check response
if (httpResponse.getCode() == HttpStatus.SC_SERVICE_UNAVAILABLE) {
LOG.warn("Failed to get response. Server returned {}. Retrying. (Duration: {})", httpResponse.getCode(), durationSince(startTime));
if (transportResp.getStatusCode() == HttpStatus.SC_SERVICE_UNAVAILABLE) {
LOG.warn("Failed to get response. Server returned {}. Retrying. (Duration: {})", transportResp.getStatusCode(), durationSince(startTime));
selectedEndpoint = getNextAliveNode();
HttpAPIClientHelper.closeQuietly(httpResponse);
ClientUtils.quiteClose(transportResp, LOG);
continue;
}

OperationMetrics metrics = new OperationMetrics(clientStats);
String summary = HttpAPIClientHelper.getHeaderVal(httpResponse
.getFirstHeader(ClickHouseHttpProto.HEADER_SRV_SUMMARY), "{}");
ProcessParser.parseSummary(summary, metrics);
String queryId = HttpAPIClientHelper.getHeaderVal(httpResponse
.getFirstHeader(ClickHouseHttpProto.HEADER_QUERY_ID), requestSettings.getQueryId());
metrics.setQueryId(queryId);
metrics.operationComplete();
Header formatHeader = httpResponse.getFirstHeader(ClickHouseHttpProto.HEADER_FORMAT);
ClickHouseFormat responseFormat = requestSettings.getFormat();
if (formatHeader != null) {
responseFormat = ClickHouseFormat.valueOf(formatHeader.getValue());
OperationMetrics metrics = completeOperation(transportResp, clientStats, requestSettings.getQueryId());
ClickHouseFormat responseFormat = transportResp.getDataFormat();
if (responseFormat == null) {
responseFormat = requestSettings.getFormat();
}

return new QueryResponse(httpResponse, responseFormat, requestSettings, metrics,
HttpAPIClientHelper.collectResponseHeaders(httpResponse));
return new QueryResponse(transportResp, responseFormat, requestSettings, metrics);

} catch (Exception e) {
HttpAPIClientHelper.closeQuietly(httpResponse);
ClientUtils.quiteClose(transportResp, LOG);
String msg = requestExMsg("Query", (i + 1), durationSince(startTime).toMillis(), requestSettings.getQueryId());
lastException = httpClientHelper.wrapException(msg, e, requestSettings.getQueryId());
if (httpClientHelper.shouldRetry(e, requestSettings.getAllSettings())) {
Expand All @@ -1781,6 +1761,16 @@
return query(sqlQuery, queryParams, null);
}

private OperationMetrics completeOperation(TransportResponse transportResponse, ClientStatisticsHolder clientStats, String originalQueryId) {
OperationMetrics metrics = new OperationMetrics(clientStats);
String summary = transportResponse.getSummaryJson();
ProcessParser.parseSummary(summary, metrics);
String queryId = transportResponse.getQueryId();
metrics.setQueryId(queryId == null ? originalQueryId : queryId);
metrics.operationComplete();
return metrics;
}

/**
* <p>Queries data in one of descriptive format and creates a reader out of the response stream.</p>
* <p>Format is selected internally so is ignored when passed in settings. If query contains format
Expand Down
10 changes: 3 additions & 7 deletions client-v2/src/main/java/com/clickhouse/client/api/insert/InsertResponse.java
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Original file line number Diff line number Diff line change
Expand Up @@ -3,21 +3,17 @@
import com.clickhouse.client.api.http.ClickHouseHttpProto;
import com.clickhouse.client.api.metrics.OperationMetrics;
import com.clickhouse.client.api.metrics.ServerMetrics;
import com.clickhouse.client.api.transport.internal.TransportResponse;

import java.util.Collections;
import java.util.Map;

public class InsertResponse implements AutoCloseable {
private OperationMetrics operationMetrics;
private final Map<String, String> responseHeaders;

public InsertResponse(OperationMetrics metrics) {
this(metrics, Collections.emptyMap());
}

public InsertResponse(OperationMetrics metrics, Map<String, String> responseHeaders) {
public InsertResponse(TransportResponse transportResponse, OperationMetrics metrics) {
this.operationMetrics = metrics;
this.responseHeaders = responseHeaders;
this.responseHeaders = transportResponse.getHeaders();
}

@Override
Expand Down
15 changes: 15 additions & 0 deletions client-v2/src/main/java/com/clickhouse/client/api/internal/ClientUtils.java
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Original file line number Diff line number Diff line change
@@ -1,5 +1,10 @@
package com.clickhouse.client.api.internal;

import org.slf4j.Logger;

import java.io.Closeable;
import java.io.IOException;

Check warning on line 6 in client-v2/src/main/java/com/clickhouse/client/api/internal/ClientUtils.java

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SonarQubeCloud / SonarCloud Code Analysis

Remove this unused import 'java.io.IOException'. 


See more on https://sonarcloud.io/project/issues?id=ClickHouse_clickhouse-java&issues=AZ778qSCY1I2F-bSCCX8&open=AZ778qSCY1I2F-bSCCX8&pullRequest=2893

/**
* Class containing utility methods used across the client.
*/
Expand All @@ -14,4 +19,14 @@
public static boolean isBlank(String str) {
return str == null || str.trim().isEmpty();
}

public static void quiteClose(Closeable closeable, Logger log) {
if (closeable != null) {
try {
closeable.close();
} catch (Exception e) {
log.warn("Failed to close object " + closeable, e);
}
}
}
}
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