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SymmetricDS is an open source database synchronization solution. It is platform-independent, web-enabled, and database-agnostic. SymmetricDS was first built to replicate changes between 'retail store' databases and ad centralized 'corporate' database.
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/*
 * Licensed to JumpMind Inc under one or more contributor 
 * license agreements.  See the NOTICE file distributed
 * with this work for additional information regarding 
 * copyright ownership.  JumpMind Inc licenses this file
 * to you under the GNU Lesser General Public License (the
 * "License"); you may not use this file except in compliance
 * with the License. 
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see           
 * .
 * 
 * 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.jumpmind.symmetric.service.jmx;

import java.util.Map;

import org.jumpmind.symmetric.service.IParameterService;
import org.springframework.jmx.export.annotation.ManagedAttribute;
import org.springframework.jmx.export.annotation.ManagedOperation;
import org.springframework.jmx.export.annotation.ManagedOperationParameter;
import org.springframework.jmx.export.annotation.ManagedOperationParameters;
import org.springframework.jmx.export.annotation.ManagedResource;

@ManagedResource(description = "The management interface for node parameters")
/**
 * 
 */
public class ParameterManagementService {

    private IParameterService parameterService;

    @ManagedOperation(description = "Reload supported parameters from file or database")
    public void rereadParameters() {
        this.parameterService.rereadParameters();
    }

    @ManagedOperation(description = "Update a parameter for this node only")
    @ManagedOperationParameters( { @ManagedOperationParameter(name = "key", description = "The name of the parameter"),
            @ManagedOperationParameter(name = "value", description = "The value for the parameter") })
    public void updateParameter(String key, String value) {
        this.parameterService.saveParameter(key, value);
    }

    @ManagedOperation(description = "Update a parameter for all nodes")
    @ManagedOperationParameters( { @ManagedOperationParameter(name = "key", description = "The name of the parameter"),
            @ManagedOperationParameter(name = "value", description = "The value for the parameter") })
    public void updateParameterForAll(String key, String value) {
        this.parameterService.saveParameter(IParameterService.ALL, IParameterService.ALL, key, value);
    }

    @ManagedOperation(description = "Update a parameter for all nodes in a group")
    @ManagedOperationParameters( {
            @ManagedOperationParameter(name = "nodeGroup", description = "The name of the node group"),
            @ManagedOperationParameter(name = "key", description = "The name of the parameter"),
            @ManagedOperationParameter(name = "value", description = "The value for the parameter") })
    public void updateParameterForNodeGroup(String nodeGroup, String key, String value) {
        this.parameterService.saveParameter(IParameterService.ALL, nodeGroup, key, value);
    }

    @ManagedOperation(description = "Update a parameter for a specific node")
    @ManagedOperationParameters( {
            @ManagedOperationParameter(name = "externalId", description = "The name of the external id of node"),
            @ManagedOperationParameter(name = "nodeGroup", description = "The name of the node group"),
            @ManagedOperationParameter(name = "key", description = "The name of the parameter"),
            @ManagedOperationParameter(name = "value", description = "The value for the parameter") })
    public void updateParameterForNode(String externalId, String nodeGroup, String key, String value) {
        this.parameterService.saveParameter(externalId, nodeGroup, key, value);
    }

    @ManagedAttribute(description = "The parameters configured for this SymmetricDS instance")
    public String getParametersList() {
        StringBuilder buffer = new StringBuilder();
        Map params = parameterService.getAllParameters();
        buffer.append("");
        for (String key : params.keySet()) {
            buffer.append(key).append("=").append(params.get(key)).append("\n");
        }
        buffer.append("");
        return buffer.toString();
    }

    public void setParameterService(IParameterService parameterService) {
        this.parameterService = parameterService;
    }
}