/*
* 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.
*/
package org.apache.ambari.server.controller.internal;
import java.util.Map;
import org.apache.ambari.server.controller.spi.Resource;
/**
* Operation level is specified along with some requests. It identifies
* the logical level, at which the operation is executed.
*/
public class RequestOperationLevel {
/**
* Conversion table is used to convert user input into our internal names
* of resources, defined at
* org.apache.ambari.server.controller.spi.Resource.Type
*/
private static final String [][] LEVEL_ALIASES= new String [][]{
// FORMAT: <external alias> , <internal alias>
{"CLUSTER", "Cluster"},
{"SERVICE", "Service"},
{"HOST", "Host"},
{"HOST_COMPONENT", "HostComponent"},
};
private static final int ALIAS_COLUMN = 0;
private static final int INTERNAL_NAME_COLUMN = 1;
// Identifiers of properties as they appear at request properties
public static final String OPERATION_LEVEL_ID = "operation_level/level";
public static final String OPERATION_CLUSTER_ID = "operation_level/cluster_name";
public static final String OPERATION_SERVICE_ID = "operation_level/service_name";
public static final String OPERATION_HOSTCOMPONENT_ID = "operation_level/hostcomponent_name";
public static final String OPERATION_HOST_NAME = "operation_level/host_name";
/**
* Converts external operation level alias to an internal name
*/
public static String getInternalLevelName(String external)
throws IllegalArgumentException{
String refinedAlias = external.trim().toUpperCase();
for (String [] pair : LEVEL_ALIASES) {
if (pair[ALIAS_COLUMN].equals(refinedAlias)) {
return pair[INTERNAL_NAME_COLUMN];
}
}
String message = String.format("Unknown operation level %s", external);
throw new IllegalArgumentException(message);
}
/**
* Converts internal operation level name to an external alias
*/
public static String getExternalLevelName(String internal) {
for (String [] pair : LEVEL_ALIASES) {
if (pair[INTERNAL_NAME_COLUMN].equals(internal)) {
return pair[ALIAS_COLUMN];
}
}
// That should never happen
String message = String.format("Unknown internal " +
"operation level name %s", internal);
throw new IllegalArgumentException(message);
}
public RequestOperationLevel(Resource.Type level, String clusterName,
String serviceName, String hostComponentName,
String hostName) {
this.level = level;
this.clusterName = clusterName;
this.serviceName = serviceName;
this.hostComponentName = hostComponentName;
this.hostName = hostName;
}
/**
* Constructs a new entity from
* @param requestInfoProperties
* @throws IllegalArgumentException
*/
public RequestOperationLevel(Map<String, String> requestInfoProperties)
throws IllegalArgumentException {
String operationLevelStr = requestInfoProperties.get(
RequestOperationLevel.OPERATION_LEVEL_ID);
try {
String internalOpLevelNameStr = getInternalLevelName(operationLevelStr);
this.level = Resource.Type.valueOf(internalOpLevelNameStr);
} catch (IllegalArgumentException e) {
String message = String.format(
"Wrong operation level value: %s", operationLevelStr);
throw new IllegalArgumentException(message, e);
}
if (!requestInfoProperties.containsKey(OPERATION_CLUSTER_ID)) {
String message = String.format(
"Mandatory key %s for operation level is not specified",
OPERATION_CLUSTER_ID);
throw new IllegalArgumentException(message);
}
this.clusterName = requestInfoProperties.get(OPERATION_CLUSTER_ID);
this.serviceName = requestInfoProperties.get(OPERATION_SERVICE_ID);
this.hostComponentName =
requestInfoProperties.get(OPERATION_HOSTCOMPONENT_ID);
this.hostName = requestInfoProperties.get(OPERATION_HOST_NAME);
}
/**
* Valid values are Cluster, Service, Host and HostComponent. Component level
* is identical to Service level, and that's why it is not supported
* as a standalone level.
*/
private Resource.Type level;
// Fields below are not used as of now and reserved for future use
/**
* Source cluster for request. Specified for all requests
*/
private String clusterName;
/**
* Source service for request. Specified for Service-level
* and HostComponent-level requests.
*/
private String serviceName;
/**
* Source host component for request. Specified for
* HostComponent-level requests.
*/
private String hostComponentName;
/**
* Source host for request. Specified for Host-level and
* HostComponent-level requests.
*/
private String hostName;
public Resource.Type getLevel() {
return level;
}
public String getClusterName() {
return clusterName;
}
public String getServiceName() {
return serviceName;
}
public String getHostComponentName() {
return hostComponentName;
}
public String getHostName() {
return hostName;
}
@Override
public String toString() {
return "RequestOperationLevel{" +
"level=" + level +
", clusterName='" + clusterName + '\'' +
", serviceName='" + serviceName + '\'' +
", hostComponentName='" + hostComponentName + '\'' +
", hostName='" + hostName + '\'' +
'}';
}
}