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NIFI-14230 Implement start/stop flow C2 operations in MiNiFi
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27 changes: 27 additions & 0 deletions
27
...-service/src/main/java/org/apache/nifi/c2/client/service/operation/FlowStateStrategy.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one or more | ||
| * contributor license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright ownership. | ||
| * The ASF 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. | ||
| */ | ||
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| package org.apache.nifi.c2.client.service.operation; | ||
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| import org.apache.nifi.c2.protocol.api.C2OperationState.OperationState; | ||
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| public interface FlowStateStrategy { | ||
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| OperationState start(); | ||
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| OperationState stop(); | ||
| } |
77 changes: 77 additions & 0 deletions
77
.../src/main/java/org/apache/nifi/c2/client/service/operation/StartFlowOperationHandler.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,77 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one or more | ||
| * contributor license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright ownership. | ||
| * The ASF 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. | ||
| */ | ||
|
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| package org.apache.nifi.c2.client.service.operation; | ||
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| import org.apache.nifi.c2.protocol.api.C2Operation; | ||
| import org.apache.nifi.c2.protocol.api.C2OperationAck; | ||
| import org.apache.nifi.c2.protocol.api.C2OperationState; | ||
| import org.apache.nifi.c2.protocol.api.OperandType; | ||
| import org.apache.nifi.c2.protocol.api.OperationType; | ||
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| import java.util.Collections; | ||
| import java.util.Map; | ||
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| import static java.util.Optional.ofNullable; | ||
| import static org.apache.commons.lang3.StringUtils.EMPTY; | ||
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| public class StartFlowOperationHandler implements C2OperationHandler { | ||
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| public static final String NOT_APPLIED_DETAILS = "Failed to start flow, please check the log for errors"; | ||
| public static final String PARTIALLY_APPLIED_DETAILS = "Some components failed to start, please check the log for errors"; | ||
| public static final String FULLY_APPLIED_DETAILS = "Flow started"; | ||
| public static final String UNEXPECTED_DETAILS = "Unexpected status, please check the log for errors"; | ||
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| private final FlowStateStrategy flowStateStrategy; | ||
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| public StartFlowOperationHandler(FlowStateStrategy flowStateStrategy) { | ||
| this.flowStateStrategy = flowStateStrategy; | ||
| } | ||
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| @Override | ||
| public OperationType getOperationType() { | ||
| return OperationType.START; | ||
| } | ||
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| @Override | ||
| public OperandType getOperandType() { | ||
| return OperandType.FLOW; | ||
| } | ||
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| @Override | ||
| public Map<String, Object> getProperties() { | ||
| return Collections.emptyMap(); | ||
| } | ||
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| @Override | ||
| public C2OperationAck handle(C2Operation operation) { | ||
| String operationId = ofNullable(operation.getIdentifier()).orElse(EMPTY); | ||
| C2OperationState.OperationState operationState = flowStateStrategy.start(); | ||
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| C2OperationState resultState = operationState( | ||
| operationState, | ||
| switch (operationState) { | ||
| case NOT_APPLIED -> NOT_APPLIED_DETAILS; | ||
| case FULLY_APPLIED -> FULLY_APPLIED_DETAILS; | ||
| case PARTIALLY_APPLIED -> PARTIALLY_APPLIED_DETAILS; | ||
| default -> UNEXPECTED_DETAILS; | ||
| } | ||
| ); | ||
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| return operationAck(operationId, resultState); | ||
| } | ||
| } |
78 changes: 78 additions & 0 deletions
78
...e/src/main/java/org/apache/nifi/c2/client/service/operation/StopFlowOperationHandler.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one or more | ||
| * contributor license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright ownership. | ||
| * The ASF 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. | ||
| */ | ||
|
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| package org.apache.nifi.c2.client.service.operation; | ||
|
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| import org.apache.nifi.c2.protocol.api.C2Operation; | ||
| import org.apache.nifi.c2.protocol.api.C2OperationAck; | ||
| import org.apache.nifi.c2.protocol.api.C2OperationState; | ||
| import org.apache.nifi.c2.protocol.api.OperandType; | ||
| import org.apache.nifi.c2.protocol.api.OperationType; | ||
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| import java.util.Collections; | ||
| import java.util.Map; | ||
|
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| import static java.util.Optional.ofNullable; | ||
| import static org.apache.commons.lang3.StringUtils.EMPTY; | ||
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| public class StopFlowOperationHandler implements C2OperationHandler { | ||
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| public static final String NOT_APPLIED_DETAILS = "Failed to stop flow, please check the log for errors"; | ||
| public static final String FULLY_APPLIED_DETAILS = "Flow stopped"; | ||
| public static final String PARTIALLY_APPLIED_DETAILS = "Some components failed to stop, please check the log for errors"; | ||
| public static final String UNEXPECTED_DETAILS = "Unexpected status, please check the log for errors"; | ||
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| private final FlowStateStrategy flowStateStrategy; | ||
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| public StopFlowOperationHandler(FlowStateStrategy flowStateStrategy) { | ||
| this.flowStateStrategy = flowStateStrategy; | ||
| } | ||
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| @Override | ||
| public OperationType getOperationType() { | ||
| return OperationType.STOP; | ||
| } | ||
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| @Override | ||
| public OperandType getOperandType() { | ||
| return OperandType.FLOW; | ||
| } | ||
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| @Override | ||
| public Map<String, Object> getProperties() { | ||
| return Collections.emptyMap(); | ||
| } | ||
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| @Override | ||
| public C2OperationAck handle(C2Operation operation) { | ||
| String operationId = ofNullable(operation.getIdentifier()).orElse(EMPTY); | ||
| C2OperationState.OperationState operationState = flowStateStrategy.stop(); | ||
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| C2OperationState resultState = operationState( | ||
| operationState, | ||
| switch (operationState) { | ||
| case NOT_APPLIED -> NOT_APPLIED_DETAILS; | ||
| case FULLY_APPLIED -> FULLY_APPLIED_DETAILS; | ||
| case PARTIALLY_APPLIED -> PARTIALLY_APPLIED_DETAILS; | ||
| default -> UNEXPECTED_DETAILS; | ||
| } | ||
| ); | ||
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| return operationAck(operationId, resultState); | ||
| } | ||
| } |
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