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Merge pull request #2928 from RusJaI/cdc-mi
CDC Support for MI
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117 changes: 117 additions & 0 deletions
117
....endpoint/src/main/java/org/wso2/carbon/inbound/endpoint/protocol/cdc/CDCEventOutput.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,117 @@ | ||
| /* | ||
| * Copyright (c) 2023, WSO2 LLC. (http://www.wso2.org) All Rights Reserved. | ||
| * | ||
| * WSO2 LLC. licenses this file to you under the Apache License, | ||
| * Version 2.0 (the "License"); you may not use this file except | ||
| * in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
|
|
||
| package org.wso2.carbon.inbound.endpoint.protocol.cdc; | ||
|
|
||
| import com.google.gson.Gson; | ||
| import com.google.gson.JsonElement; | ||
| import com.google.gson.JsonObject; | ||
| import io.debezium.engine.ChangeEvent; | ||
|
|
||
| import static org.wso2.carbon.inbound.endpoint.protocol.cdc.InboundCDCConstants.AFTER; | ||
| import static org.wso2.carbon.inbound.endpoint.protocol.cdc.InboundCDCConstants.BEFORE; | ||
| import static org.wso2.carbon.inbound.endpoint.protocol.cdc.InboundCDCConstants.DB; | ||
| import static org.wso2.carbon.inbound.endpoint.protocol.cdc.InboundCDCConstants.OP; | ||
| import static org.wso2.carbon.inbound.endpoint.protocol.cdc.InboundCDCConstants.PAYLOAD; | ||
| import static org.wso2.carbon.inbound.endpoint.protocol.cdc.InboundCDCConstants.SOURCE; | ||
| import static org.wso2.carbon.inbound.endpoint.protocol.cdc.InboundCDCConstants.TABLE; | ||
| import static org.wso2.carbon.inbound.endpoint.protocol.cdc.InboundCDCConstants.TS_MS; | ||
|
|
||
| public class CDCEventOutput { | ||
|
|
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| private JsonObject payload; | ||
|
|
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| private enum operations {c, r, u, d}; | ||
|
|
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| CDCEventOutput(ChangeEvent event) { | ||
| String valueString = event.value().toString(); | ||
| JsonObject value = new Gson().fromJson(valueString, JsonObject.class); | ||
| this.payload = value.getAsJsonObject(PAYLOAD); | ||
| } | ||
|
|
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| public JsonElement getJsonPayloadBeforeEvent() { | ||
| return payload.get(BEFORE); | ||
| } | ||
|
|
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| public JsonElement getJsonPayloadAfterEvent() { | ||
| return payload.get(AFTER); | ||
| } | ||
|
|
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| public Long getTs_ms() { | ||
| if (payload.has(TS_MS)) { | ||
| return payload.get(TS_MS).getAsLong(); | ||
| } | ||
| return null; | ||
| } | ||
|
|
||
| public String getDatabase() { | ||
| if (getSource() != null && getSource().has(DB)) { | ||
| return getSource().get(DB).getAsString(); | ||
| } | ||
| return null; | ||
| } | ||
|
|
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| public JsonElement getTable() { | ||
| JsonElement tableObject = null; | ||
| if (getSource() != null && getSource().has(TABLE)) { | ||
| tableObject = getSource().get(TABLE); | ||
| } | ||
| return tableObject; | ||
| } | ||
|
|
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| private JsonObject getSource () { | ||
| if (payload.has(SOURCE)) { | ||
| return payload.getAsJsonObject(SOURCE); | ||
| } | ||
| return null; | ||
| } | ||
|
|
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| public String getOp() { | ||
| if (payload.has(OP)) { | ||
| return getOpString(payload.get(OP).getAsString()); | ||
| } | ||
| return null; | ||
| } | ||
|
|
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| private String getOpString(String op) { | ||
| if (op != null) { | ||
| switch (operations.valueOf(op)) { | ||
| case c: | ||
| return "CREATE"; | ||
| case r: | ||
| return "READ"; | ||
| case u: | ||
| return "UPDATE"; | ||
| case d: | ||
| return "DELETE"; | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
|
|
||
| public JsonObject getOutputJsonPayload () { | ||
| if (payload == null) { | ||
| return null; | ||
| } | ||
| JsonObject jsonPayload = new JsonObject(); | ||
| jsonPayload.addProperty(OP, getOp()); | ||
| jsonPayload.add(BEFORE, getJsonPayloadBeforeEvent()); | ||
| jsonPayload.add(AFTER, getJsonPayloadAfterEvent()); | ||
| return jsonPayload; | ||
| } | ||
| } |
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