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Saga.java
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129 lines (107 loc) · 4.58 KB
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/*
* MIT License
*
* Copyright (c) 2021 yedf
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package saga;
import com.alibaba.fastjson.JSONObject;
import common.constant.Constant;
import common.constant.ParamFieldConstant;
import common.model.DtmServerInfo;
import common.utils.HttpUtil;
import common.enums.TransTypeEnum;
import common.model.TransBase;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
public class Saga {
private static final String ORDERS = "orders";
private static final String CONCURRENT = "concurrent";
private TransBase transBase;
private DtmServerInfo dtmServerInfo;
private boolean concurrent;
private Map<String, ArrayList<Integer>> orders;
public Saga(String ipPort, String gid) {
this.dtmServerInfo = new DtmServerInfo(ipPort);
this.transBase = new TransBase(TransTypeEnum.SAGA, gid, false);
this.concurrent = false;
this.orders = new HashMap<>();
}
public Saga add(String action, String compensate, Object postData) {
HashMap<String, String> step = new HashMap<>();
step.put(ParamFieldConstant.ACTION, action);
step.put(ParamFieldConstant.COMPENSATE, compensate);
transBase.getSteps().add(step);
transBase.getPayloads().add(JSONObject.toJSONString(postData));
return this;
}
public Saga addBranchOrder(Integer branch, ArrayList<Integer> preBranches) {
orders.put(branch.toString(), preBranches);
return this;
}
public Saga enableConcurrent() {
concurrent = true;
return this;
}
public void submit() throws Exception {
addConcurrentContext();
HashMap<String, Object> mapParam = new HashMap<>(Constant.DEFAULT_INITIAL_CAPACITY);
mapParam.put(ParamFieldConstant.GID, transBase.getGid());
mapParam.put(ParamFieldConstant.TRANS_TYPE, TransTypeEnum.SAGA.getValue());
mapParam.put(ParamFieldConstant.STEPS, transBase.getSteps());
mapParam.put(ParamFieldConstant.PAYLOADS, transBase.getPayloads());
mapParam.put(ParamFieldConstant.CUSTOM_DATA, transBase.getCustomData());
mapParam.put(ParamFieldConstant.WAIT_RESULT, transBase.isWaitResult());
mapParam.put(ParamFieldConstant.TIMEOUT_TO_FAIL, transBase.getTimeoutToFail());
mapParam.put(ParamFieldConstant.RETRY_INTERVAL, transBase.getRetryInterval());
mapParam.put(ParamFieldConstant.PASSTHROGH_HEADERS, transBase.getPassthroughHeaders());
mapParam.put(ParamFieldConstant.BRANCH_HEADERS, transBase.getBranchHeaders());
HttpUtil.post(dtmServerInfo.submit(), JSONObject.toJSONString(mapParam));
}
public Saga enableWaitResult() {
transBase.setWaitResult(true);
return this;
}
public Saga setTimeoutToFail(long timeoutToFail) {
transBase.setTimeoutToFail(timeoutToFail);
return this;
}
public Saga setRetryInterval(long retryInterval) {
transBase.setRetryInterval(retryInterval);
return this;
}
public Saga setBranchHeaders(Map<String, String> headers) {
transBase.setBranchHeaders(headers);
return this;
}
public Saga setPassthroughHeaders(ArrayList<String> passthroughHeaders) {
transBase.setPassthroughHeaders(passthroughHeaders);
return this;
}
private void addConcurrentContext() {
if (concurrent) {
HashMap<String, Object> data = new HashMap<>();
data.put(ORDERS, orders);
data.put(CONCURRENT, true);
transBase.setCustomData(JSONObject.toJSONString(data));
}
}
}