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support ps protocol inner 349 #3861
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203 changes: 203 additions & 0 deletions
203
src/main/java/com/actiontech/dble/services/rwsplit/MysqlExecuteResponseHandler.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,203 @@ | ||
| package com.actiontech.dble.services.rwsplit; | ||
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| import com.actiontech.dble.backend.mysql.ByteUtil; | ||
| import com.actiontech.dble.backend.mysql.nio.handler.LoadDataResponseHandler; | ||
| import com.actiontech.dble.backend.mysql.nio.handler.PreparedResponseHandler; | ||
| import com.actiontech.dble.backend.mysql.nio.handler.ResponseHandler; | ||
| import com.actiontech.dble.net.mysql.*; | ||
| import com.actiontech.dble.services.mysqlsharding.MySQLResponseService; | ||
| import com.actiontech.dble.services.mysqlsharding.MysqlBackendLogicHandler; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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|
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| import java.util.ArrayList; | ||
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| public class MysqlExecuteResponseHandler extends MysqlBackendLogicHandler { | ||
| private static final Logger LOGGER = LoggerFactory.getLogger(MysqlExecuteResponseHandler.class); | ||
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| private final boolean cursor; | ||
| private volatile boolean okAfterEof = false; | ||
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| public MysqlExecuteResponseHandler(MySQLResponseService service, boolean cursor) { | ||
| super(service); | ||
| this.cursor = cursor; | ||
| } | ||
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| public void handleInnerData(byte[] data) { | ||
|
Check notice Code scanning / CodeQL Missing Override annotation Note
This method overrides
MysqlBackendLogicHandler.handleInnerData Error loading related location Loading |
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| if (service.getConnection().isClosed()) { | ||
| if (data != null && data.length > 4 && data[4] == ErrorPacket.FIELD_COUNT) { | ||
| service.parseErrorPacket(data, "connection close"); | ||
| } | ||
| return; | ||
| } | ||
| switch (resultStatus) { | ||
| case RESULT_STATUS_INIT: | ||
| if (service.getSession() != null) { | ||
| service.getSession().startExecuteBackend(service.getConnection().getId()); | ||
| } | ||
| switch (data[4]) { | ||
|
Check warning Code scanning / CodeQL Dereferenced variable may be null Warning
Variable
data Error loading related location Loading this Error loading related location Loading |
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| case OkPacket.FIELD_COUNT: | ||
| handleOkPacket(data); | ||
| break; | ||
| case ErrorPacket.FIELD_COUNT: | ||
| handleErrorPacket(data); | ||
| break; | ||
| case RequestFilePacket.FIELD_COUNT: | ||
| handleRequestPacket(data); | ||
| break; | ||
| default: | ||
| resultStatus = RESULT_STATUS_HEADER; | ||
| header = data; | ||
| fields = new ArrayList<>((int) ByteUtil.readLength(data, 4)); | ||
| } | ||
| break; | ||
| case RESULT_STATUS_HEADER: | ||
| switch (data[4]) { | ||
|
Check warning Code scanning / CodeQL Dereferenced variable may be null Warning
Variable
data Error loading related location Loading this Error loading related location Loading |
||
| case ErrorPacket.FIELD_COUNT: | ||
| reset(); | ||
| handleErrorPacket(data); | ||
| break; | ||
| case EOFPacket.FIELD_COUNT: | ||
| resultStatus = RESULT_STATUS_FIELD_EOF; | ||
| eof(data); | ||
| break; | ||
| default: | ||
| fields.add(data); | ||
| } | ||
| break; | ||
| case RESULT_STATUS_FIELD_EOF: | ||
| switch (data[4]) { | ||
|
Check warning Code scanning / CodeQL Dereferenced variable may be null Warning
Variable
data Error loading related location Loading this Error loading related location Loading |
||
| case ErrorPacket.FIELD_COUNT: | ||
| reset(); | ||
| handleErrorPacket(data); | ||
| break; | ||
| case EOFPacket.FIELD_COUNT: | ||
| if (data.length > MySQLPacket.MAX_EOF_SIZE) { | ||
| handleRowPacket(data); | ||
| } else { | ||
| reset(); | ||
| handleRowEofPacket(data); | ||
| } | ||
| break; | ||
| default: | ||
| handleRowPacket(data); | ||
| } | ||
| break; | ||
| default: | ||
| throw new RuntimeException("unknown status!"); | ||
| } | ||
| } | ||
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| private void handleErrorPacket(byte[] data) { | ||
| final ResponseHandler respHand = service.getResponseHandler(); | ||
| service.setExecuting(false); | ||
| service.signal(); | ||
| if (respHand != null) { | ||
| respHand.errorResponse(data, service); | ||
| } else { | ||
| try { | ||
| ErrorPacket errPkg = new ErrorPacket(); | ||
| errPkg.read(data); | ||
| String errMsg = "errNo:" + errPkg.getErrNo() + " " + new String(errPkg.getMessage()); | ||
| LOGGER.warn("no handler process the execute sql err,just close it, sql error:{},back con:{}", errMsg, service); | ||
| if (service.getSession() != null) { | ||
| LOGGER.warn("no handler process the execute sql err,front conn {}", service.getSession().getSource()); | ||
| } | ||
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| } catch (RuntimeException e) { | ||
| LOGGER.info("error handle error-packet", e); | ||
| } | ||
| closeNoHandler(); | ||
| } | ||
| } | ||
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| private void closeNoHandler() { | ||
| if (!service.getConnection().isClosed()) { | ||
| service.getConnection().close("no handler"); | ||
| LOGGER.info("no handler bind in this con " + this + " client:" + service); | ||
|
Check notice Code scanning / CodeQL Use of default toString() Note
Default toString(): MysqlExecuteResponseHandler inherits toString() from Object, and so is not suitable for printing.
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| } | ||
| } | ||
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| private void handleRequestPacket(byte[] data) { | ||
| ResponseHandler respHand = service.getResponseHandler(); | ||
| if (respHand instanceof LoadDataResponseHandler) { | ||
| ((LoadDataResponseHandler) respHand).requestDataResponse(data, service); | ||
| } else { | ||
| closeNoHandler(); | ||
| } | ||
| } | ||
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| private void handleRowPacket(byte[] data) { | ||
| //LOGGER.info("get into rowing data " + data.length); | ||
| ResponseHandler respHand = service.getResponseHandler(); | ||
| if (respHand != null) { | ||
| respHand.rowResponse(data, null, false, service); | ||
| } else { | ||
| closeNoHandler(); | ||
| } | ||
| } | ||
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| private void handleRowEofPacket(byte[] data) { | ||
| if (service.getSession() != null && !service.isTesting() && service.getLogResponse().compareAndSet(false, true)) { | ||
| service.getSession().setBackendResponseEndTime(this.service); | ||
| } | ||
| service.getLogResponse().set(false); | ||
| ResponseHandler respHand = service.getResponseHandler(); | ||
| if (respHand != null) { | ||
| service.backendSpecialCleanUp(); | ||
| respHand.rowEofResponse(data, false, service); | ||
| } else { | ||
| closeNoHandler(); | ||
| } | ||
| } | ||
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| private void handleOkPacket(byte[] data) { | ||
| // if prepared statement doesn't keep cursor on, the response contains additional ok packet | ||
| if (okAfterEof) { | ||
| resultStatus = RESULT_STATUS_HEADER; | ||
| header = data; | ||
| fields = new ArrayList<>((int) ByteUtil.readLength(data, 4)); | ||
| } else { | ||
| ok(data); | ||
| } | ||
| } | ||
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| private void ok(byte[] data) { | ||
| ResponseHandler respHand = service.getResponseHandler(); | ||
| if (respHand != null) { | ||
| respHand.okResponse(data, service); | ||
| } | ||
| } | ||
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| private void eof(byte[] eof) { | ||
| if (cursor) { | ||
| handleFieldEofPacket(eof); | ||
| } else { | ||
| okAfterEof = true; | ||
| handleBackendFieldEofPacket(eof); | ||
| } | ||
| } | ||
|
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| private void handleBackendFieldEofPacket(byte[] data) { | ||
| ResponseHandler respHand = service.getResponseHandler(); | ||
| service.setRowDataFlowing(true); | ||
| if (respHand != null) { | ||
| respHand.fieldEofResponse(header, fields, null, data, false, service); | ||
| } else { | ||
| closeNoHandler(); | ||
| } | ||
| } | ||
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| private void handleFieldEofPacket(byte[] eof) { | ||
| ResponseHandler respHand = service.getResponseHandler(); | ||
| if (respHand instanceof PreparedResponseHandler) { | ||
| ((PreparedResponseHandler) respHand).preparedExecuteResponse(header, fields, eof, service); | ||
| } else { | ||
| closeNoHandler(); | ||
| } | ||
| } | ||
| } | ||
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Check notice
Code scanning / CodeQL
Useless parameter Note