/**
* 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.view.hive2.resources.jobs.atsJobs;
import org.apache.ambari.view.ViewContext;
import org.apache.commons.io.IOUtils;
import org.json.simple.JSONObject;
import org.json.simple.JSONValue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
public class ATSRequestsDelegateImpl implements ATSRequestsDelegate {
protected final static Logger LOG =
LoggerFactory.getLogger(ATSRequestsDelegateImpl.class);
public static final String EMPTY_ENTITIES_JSON = "{ \"entities\" : [ ] }";
private ViewContext context;
private String atsUrl;
public ATSRequestsDelegateImpl(ViewContext context, String atsUrl) {
this.context = context;
this.atsUrl = addProtocolIfMissing(atsUrl);
}
private String addProtocolIfMissing(String atsUrl) {
if (!atsUrl.matches("^[^:]+://.*$"))
atsUrl = "http://" + atsUrl;
return atsUrl;
}
@Override
public String hiveQueryIdDirectUrl(String entity) {
return atsUrl + "/ws/v1/timeline/HIVE_QUERY_ID/" + entity;
}
@Override
public String hiveQueryIdOperationIdUrl(String operationId) {
// ATS parses operationId started with digit as integer and not returns the response.
// Quotation prevents this.
return atsUrl + "/ws/v1/timeline/HIVE_QUERY_ID?primaryFilter=operationid:%22" + operationId + "%22";
}
@Override
public String tezDagDirectUrl(String entity) {
return atsUrl + "/ws/v1/timeline/TEZ_DAG_ID/" + entity;
}
@Override
public String tezDagNameUrl(String name) {
return atsUrl + "/ws/v1/timeline/TEZ_DAG_ID?primaryFilter=dagName:" + name;
}
@Override
public String tezVerticesListForDAGUrl(String dagId) {
return atsUrl + "/ws/v1/timeline/TEZ_VERTEX_ID?primaryFilter=TEZ_DAG_ID:" + dagId;
}
@Override
public JSONObject hiveQueryIdsForUser(String username) {
String hiveQueriesListUrl = atsUrl + "/ws/v1/timeline/HIVE_QUERY_ID?primaryFilter=requestuser:" + username;
String response = readFromWithDefault(hiveQueriesListUrl, "{ \"entities\" : [ ] }");
return (JSONObject) JSONValue.parse(response);
}
@Override
public JSONObject hiveQueryIdByOperationId(String operationId) {
String hiveQueriesListUrl = hiveQueryIdOperationIdUrl(operationId);
String response = readFromWithDefault(hiveQueriesListUrl, EMPTY_ENTITIES_JSON);
return (JSONObject) JSONValue.parse(response);
}
@Override
public JSONObject tezDagByName(String name) {
String tezDagUrl = tezDagNameUrl(name);
String response = readFromWithDefault(tezDagUrl, EMPTY_ENTITIES_JSON);
return (JSONObject) JSONValue.parse(response);
}
@Override
public JSONObject tezDagByEntity(String entity) {
String tezDagEntityUrl = tezDagEntityUrl(entity);
String response = readFromWithDefault(tezDagEntityUrl, EMPTY_ENTITIES_JSON);
return (JSONObject) JSONValue.parse(response);
}
/**
* fetches the HIVE_QUERY_ID from ATS for given user between given time period
* @param username: username for which to fetch hive query IDs
* @param startTime: time in miliseconds, inclusive
* @param endTime: time in miliseconds, exclusive
* @return
*/
@Override
public JSONObject hiveQueryIdsForUserByTime(String username, long startTime, long endTime) {
StringBuilder url = new StringBuilder();
url.append(atsUrl).append("/ws/v1/timeline/HIVE_QUERY_ID?")
.append("windowStart=").append(startTime)
.append("&windowEnd=").append(endTime)
.append("&primaryFilter=requestuser:").append(username);
String hiveQueriesListUrl = url.toString();
String response = readFromWithDefault(hiveQueriesListUrl, EMPTY_ENTITIES_JSON);
return (JSONObject) JSONValue.parse(response);
}
@Override
public JSONObject hiveQueryEntityByEntityId(String hiveEntityId) {
StringBuilder url = new StringBuilder();
url.append(atsUrl).append("/ws/v1/timeline/HIVE_QUERY_ID/").append(hiveEntityId);
String hiveQueriesListUrl = url.toString();
String response = readFromWithDefault(hiveQueriesListUrl, EMPTY_ENTITIES_JSON);
return (JSONObject) JSONValue.parse(response);
}
private String tezDagEntityUrl(String entity) {
return atsUrl + "/ws/v1/timeline/TEZ_DAG_ID?primaryFilter=callerId:" + entity;
}
public boolean checkATSStatus() throws IOException {
String url = atsUrl + "/ws/v1/timeline/";
InputStream responseInputStream = context.getURLStreamProvider().readAsCurrent(url, "GET",
(String)null, new HashMap<String, String>());
IOUtils.toString(responseInputStream);
return true;
}
@Override
public JSONObject tezVerticesListForDAG(String dagId) {
String response = readFromWithDefault(tezVerticesListForDAGUrl(dagId), "{ \"entities\" : [ ] }");
return (JSONObject) JSONValue.parse(response);
}
protected String readFromWithDefault(String atsUrl, String defaultResponse) {
String response;
try {
InputStream responseInputStream = context.getURLStreamProvider().readAsCurrent(atsUrl, "GET",
(String)null, new HashMap<String, String>());
response = IOUtils.toString(responseInputStream);
} catch (IOException e) {
LOG.error("Error while reading from ATS", e);
response = defaultResponse;
}
return response;
}
public String getAtsUrl() {
return atsUrl;
}
public void setAtsUrl(String atsUrl) {
this.atsUrl = atsUrl;
}
}