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# OpenSergo Java SDK | ||
# OpenSergo Java SDK | ||
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## How to use | ||
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### scene 1 : subscribe config-data | ||
``` java | ||
public static void main(String[] args) throws Exception { | ||
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// instant OpenSergoClient | ||
OpenSergoClient openSergoClient = new OpenSergoClient("33.1.33.1", 10246); | ||
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// registry SubscribeInfo of FaultToleranceRule | ||
// 1. instant SubscribeKey | ||
SubscribeKey subscribeKey = new SubscribeKey("default", "foo-app", ConfigKind.FAULT_TOLERANCE_RULE); | ||
// 2. construct SubscribeInfo | ||
OpensergoClientSubscribeInfo opensergoClientSubscribeInfo = new OpensergoClientSubscribeInfo(subscribeKey); | ||
opensergoClientSubscribeInfo.addSubscriber(new DefaultFaulttoleranceSubscriber()); | ||
// 2. registry | ||
openSergoClient.registerSubscribeInfo(opensergoClientSubscribeInfo); | ||
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// start OpenSergoClient | ||
openSergoClient.start(); | ||
} | ||
``` | ||
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### scene 2 : subscribe config-data with custom-logic when config-data changed. | ||
Add a subscriber by implements the function in `subscribe.Subscriber`. | ||
``` java | ||
public class TestSubscriber implements OpenSergoConfigSubscriber { | ||
@Override | ||
public boolean onConfigUpdate(SubscribeKey subscribeKey, Object data) { | ||
System.out.println(data); | ||
return true; | ||
} | ||
} | ||
``` | ||
And then registry it to `subscriber.SubscriberRegistry`. | ||
``` java | ||
public static void main(String[] args) throws Exception { | ||
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// instant OpenSergoClient | ||
OpenSergoClient openSergoClient = new OpenSergoClient("33.1.33.1", 10246); | ||
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// registry SubscribeInfo of FaultToleranceRule | ||
// 1. instant SubscribeKey | ||
SubscribeKey subscribeKey = new SubscribeKey("default", "foo-app", ConfigKind.FAULT_TOLERANCE_RULE); | ||
// 2. instant Subscriber | ||
TestSubscriber testSubscriber = new TestSubscriber(); | ||
// 3. construct SubscribeInfo | ||
OpensergoClientSubscribeInfo opensergoClientSubscribeInfo = new OpensergoClientSubscribeInfo(subscribeKey); | ||
opensergoClientSubscribeInfo.addSubscriber(testSubscriber); | ||
// 4. registry | ||
openSergoClient.registerSubscribeInfo(opensergoClientSubscribeInfo); | ||
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openSergoClient.start(); | ||
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// registry after OpenSergoClient started | ||
opensergoClientSubscribeInfo.addSubscriber(new OpensergoConfigDefaultSubscriber()); | ||
openSergoClient.registerSubscribeInfo(opensergoClientSubscribeInfo); | ||
} | ||
``` |
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/* | ||
* Copyright 2022, OpenSergo Authors | ||
* | ||
* Licensed 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 | ||
* | ||
* https://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 io.opensergo; | ||
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/** | ||
* @author Jiangnan Jia | ||
**/ | ||
public enum OpensergoClientStatus { | ||
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/* initial*/ | ||
INITIAL, | ||
STARTING, | ||
STARTED, | ||
INTERRUPTED, | ||
SHUTDOWN | ||
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} |
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src/main/java/io/opensergo/OpensergoClientSubscribeInfo.java
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/* | ||
* Copyright 2022, OpenSergo Authors | ||
* | ||
* Licensed 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 | ||
* | ||
* https://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 io.opensergo; | ||
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import com.google.common.collect.Lists; | ||
import io.opensergo.subscribe.OpenSergoConfigSubscriber; | ||
import io.opensergo.subscribe.SubscribeKey; | ||
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import java.util.List; | ||
import java.util.stream.Collectors; | ||
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/** | ||
* @author Jiangnan Jia | ||
**/ | ||
public class OpensergoClientSubscribeInfo { | ||
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private SubscribeKey subscribeKey; | ||
private List<OpenSergoConfigSubscriber> subscriberList; | ||
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public OpensergoClientSubscribeInfo(SubscribeKey subscribeKey) { | ||
this.subscribeKey = subscribeKey; | ||
this.subscriberList = Lists.newArrayList(); | ||
} | ||
public OpensergoClientSubscribeInfo(SubscribeKey subscribeKey, List<OpenSergoConfigSubscriber> subscriberList) { | ||
this.subscribeKey = subscribeKey; | ||
this.subscriberList = subscriberList; | ||
} | ||
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public OpensergoClientSubscribeInfo addSubscriber(OpenSergoConfigSubscriber subscriber) { | ||
int sameClassNum = this.subscriberList.stream() | ||
.filter(item -> item.getClass() == subscriber.getClass()) | ||
.collect(Collectors.toList()) | ||
.size(); | ||
if (sameClassNum == 0) { | ||
this.subscriberList.add(subscriber); | ||
} | ||
return this; | ||
} | ||
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public SubscribeKey getSubscribeKey() { | ||
return subscribeKey; | ||
} | ||
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public List<OpenSergoConfigSubscriber> getSubscriberList() { | ||
return subscriberList; | ||
} | ||
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@Override | ||
public String toString() { | ||
return "OpensergoClientSubscribeInfo{" + | ||
"subscribeKey=" + subscribeKey + | ||
", subscriberList=" + subscriberList + | ||
'}'; | ||
} | ||
} |
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src/main/java/io/opensergo/subscribe/DefaultFaulttoleranceSubscriber.java
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/* | ||
* Copyright 2022, OpenSergo Authors | ||
* | ||
* Licensed 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 | ||
* | ||
* https://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 io.opensergo.subscribe; | ||
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/** | ||
* @author Jiangnan Jia | ||
**/ | ||
public class DefaultFaulttoleranceSubscriber implements OpenSergoConfigSubscriber { | ||
@Override | ||
public boolean onConfigUpdate(SubscribeKey subscribeKey, Object data) { | ||
System.out.println(data); | ||
return true; | ||
} | ||
} |
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src/main/java/io/opensergo/subscribe/OpensergoConfigDefaultSubscriber.java
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/* | ||
* Copyright 2022, OpenSergo Authors | ||
* | ||
* Licensed 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 | ||
* | ||
* https://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 io.opensergo.subscribe; | ||
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import io.opensergo.log.OpenSergoLogger; | ||
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/** | ||
* @author Jiangnan Jia | ||
**/ | ||
public class OpensergoConfigDefaultSubscriber implements OpenSergoConfigSubscriber { | ||
@Override | ||
public boolean onConfigUpdate(SubscribeKey subscribeKey, Object data) { | ||
OpenSergoLogger.info(data.toString()); | ||
return true; | ||
} | ||
} |
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