001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase;
019
020import java.nio.charset.StandardCharsets;
021import java.util.HashMap;
022import java.util.Map;
023import org.apache.hadoop.hbase.util.Strings;
024import org.apache.yetus.audience.InterfaceAudience;
025
026import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;
027
028import org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos;
029
030@InterfaceAudience.Private
031public final class UserMetricsBuilder {
032
033  public static UserMetrics toUserMetrics(ClusterStatusProtos.UserLoad userLoad) {
034    UserMetricsBuilder builder =
035      UserMetricsBuilder.newBuilder(userLoad.getUserName().getBytes(StandardCharsets.UTF_8));
036    userLoad.getClientMetricsList().stream()
037      .map(clientMetrics -> new ClientMetricsImpl(clientMetrics.getHostName(),
038        clientMetrics.getReadRequestsCount(), clientMetrics.getWriteRequestsCount(),
039        clientMetrics.getFilteredRequestsCount()))
040      .forEach(builder::addClientMetris);
041    return builder.build();
042  }
043
044  public static ClusterStatusProtos.UserLoad toUserMetrics(UserMetrics userMetrics) {
045    ClusterStatusProtos.UserLoad.Builder builder =
046      ClusterStatusProtos.UserLoad.newBuilder().setUserName(userMetrics.getNameAsString());
047    userMetrics.getClientMetrics().values().stream()
048      .map(clientMetrics -> ClusterStatusProtos.ClientMetrics.newBuilder()
049        .setHostName(clientMetrics.getHostName())
050        .setWriteRequestsCount(clientMetrics.getWriteRequestsCount())
051        .setReadRequestsCount(clientMetrics.getReadRequestsCount())
052        .setFilteredRequestsCount(clientMetrics.getFilteredReadRequestsCount()).build())
053      .forEach(builder::addClientMetrics);
054    return builder.build();
055  }
056
057  public static UserMetricsBuilder newBuilder(byte[] name) {
058    return new UserMetricsBuilder(name);
059  }
060
061  private final byte[] name;
062  private Map<String, UserMetrics.ClientMetrics> clientMetricsMap = new HashMap<>();
063
064  private UserMetricsBuilder(byte[] name) {
065    this.name = name;
066  }
067
068  public UserMetricsBuilder addClientMetris(UserMetrics.ClientMetrics clientMetrics) {
069    clientMetricsMap.put(clientMetrics.getHostName(), clientMetrics);
070    return this;
071  }
072
073  public UserMetrics build() {
074    return new UserMetricsImpl(name, clientMetricsMap);
075  }
076
077  public static class ClientMetricsImpl implements UserMetrics.ClientMetrics {
078    private final long filteredReadRequestsCount;
079    private final String hostName;
080    private final long readRequestCount;
081    private final long writeRequestCount;
082
083    public ClientMetricsImpl(String hostName, long readRequest, long writeRequest,
084      long filteredReadRequestsCount) {
085      this.hostName = hostName;
086      this.readRequestCount = readRequest;
087      this.writeRequestCount = writeRequest;
088      this.filteredReadRequestsCount = filteredReadRequestsCount;
089    }
090
091    @Override
092    public String getHostName() {
093      return hostName;
094    }
095
096    @Override
097    public long getReadRequestsCount() {
098      return readRequestCount;
099    }
100
101    @Override
102    public long getWriteRequestsCount() {
103      return writeRequestCount;
104    }
105
106    @Override
107    public long getFilteredReadRequestsCount() {
108      return filteredReadRequestsCount;
109    }
110  }
111
112  private static class UserMetricsImpl implements UserMetrics {
113    private final byte[] name;
114    private final Map<String, ClientMetrics> clientMetricsMap;
115
116    UserMetricsImpl(byte[] name, Map<String, ClientMetrics> clientMetricsMap) {
117      this.name = Preconditions.checkNotNull(name);
118      this.clientMetricsMap = clientMetricsMap;
119    }
120
121    @Override
122    public byte[] getUserName() {
123      return name;
124    }
125
126    @Override
127    public long getReadRequestCount() {
128      return clientMetricsMap.values().stream().map(c -> c.getReadRequestsCount()).reduce(0L,
129        Long::sum);
130    }
131
132    @Override
133    public long getWriteRequestCount() {
134      return clientMetricsMap.values().stream().map(c -> c.getWriteRequestsCount()).reduce(0L,
135        Long::sum);
136    }
137
138    @Override
139    public Map<String, ClientMetrics> getClientMetrics() {
140      return this.clientMetricsMap;
141    }
142
143    @Override
144    public long getFilteredReadRequests() {
145      return clientMetricsMap.values().stream().map(c -> c.getFilteredReadRequestsCount())
146        .reduce(0L, Long::sum);
147    }
148
149    @Override
150    public String toString() {
151      StringBuilder sb =
152        Strings.appendKeyValue(new StringBuilder(), "readRequestCount", this.getReadRequestCount());
153      Strings.appendKeyValue(sb, "writeRequestCount", this.getWriteRequestCount());
154      Strings.appendKeyValue(sb, "filteredReadRequestCount", this.getFilteredReadRequests());
155      return sb.toString();
156    }
157  }
158
159}