surekhasaharan commented on a change in pull request #6094: Introduce SystemSchema tables (#5989) URL: https://github.com/apache/incubator-druid/pull/6094#discussion_r220012156
########## File path: sql/src/main/java/org/apache/druid/sql/calcite/schema/SystemSchema.java ########## @@ -0,0 +1,575 @@ +/* + * 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.druid.sql.calcite.schema; + +import com.fasterxml.jackson.core.JsonProcessingException; +import com.fasterxml.jackson.core.type.TypeReference; +import com.fasterxml.jackson.databind.JavaType; +import com.fasterxml.jackson.databind.ObjectMapper; +import com.google.common.base.Preconditions; +import com.google.common.collect.FluentIterable; +import com.google.common.collect.ImmutableMap; +import com.google.common.collect.Iterables; +import com.google.common.util.concurrent.ListenableFuture; +import com.google.inject.Inject; +import org.apache.calcite.DataContext; +import org.apache.calcite.linq4j.DefaultEnumerable; +import org.apache.calcite.linq4j.Enumerable; +import org.apache.calcite.linq4j.Enumerator; +import org.apache.calcite.linq4j.Linq4j; +import org.apache.calcite.rel.type.RelDataType; +import org.apache.calcite.rel.type.RelDataTypeFactory; +import org.apache.calcite.schema.ScannableTable; +import org.apache.calcite.schema.Table; +import org.apache.calcite.schema.impl.AbstractSchema; +import org.apache.calcite.schema.impl.AbstractTable; +import org.apache.druid.client.DruidServer; +import org.apache.druid.client.JsonParserIterator; +import org.apache.druid.client.TimelineServerView; +import org.apache.druid.client.coordinator.Coordinator; +import org.apache.druid.client.indexing.IndexingService; +import org.apache.druid.client.selector.QueryableDruidServer; +import org.apache.druid.discovery.DruidLeaderClient; +import org.apache.druid.indexer.TaskStatusPlus; +import org.apache.druid.java.util.common.ISE; +import org.apache.druid.java.util.common.StringUtils; +import org.apache.druid.java.util.common.logger.Logger; +import org.apache.druid.java.util.http.client.Request; +import org.apache.druid.java.util.http.client.io.AppendableByteArrayInputStream; +import org.apache.druid.java.util.http.client.response.ClientResponse; +import org.apache.druid.java.util.http.client.response.InputStreamResponseHandler; +import org.apache.druid.segment.column.ValueType; +import org.apache.druid.server.security.AuthorizerMapper; +import org.apache.druid.sql.calcite.table.RowSignature; +import org.apache.druid.timeline.DataSegment; +import org.jboss.netty.handler.codec.http.HttpMethod; +import org.jboss.netty.handler.codec.http.HttpResponse; + +import javax.servlet.http.HttpServletResponse; +import java.io.IOException; +import java.io.InputStream; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.HashSet; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.Map.Entry; +import java.util.Set; +import java.util.concurrent.ConcurrentSkipListMap; +import java.util.concurrent.ExecutionException; + +public class SystemSchema extends AbstractSchema +{ + private static final Logger log = new Logger(SystemSchema.class); + + public static final String NAME = "sys"; + private static final String SEGMENTS_TABLE = "segments"; + private static final String SERVERS_TABLE = "servers"; + private static final String SEGMENT_SERVERS_TABLE = "segment_servers"; + private static final String TASKS_TABLE = "tasks"; + private static final int SEGMENT_SERVERS_TABLE_SIZE; + + private static final RowSignature SEGMENTS_SIGNATURE = RowSignature + .builder() + .add("segment_id", ValueType.STRING) + .add("datasource", ValueType.STRING) + .add("start", ValueType.STRING) + .add("end", ValueType.STRING) + .add("size", ValueType.LONG) + .add("version", ValueType.STRING) + .add("partition_num", ValueType.STRING) + .add("num_replicas", ValueType.LONG) + .add("num_rows", ValueType.LONG) + .add("is_published", ValueType.LONG) + .add("is_available", ValueType.LONG) + .add("is_realtime", ValueType.LONG) + .add("payload", ValueType.STRING) + .build(); + + private static final RowSignature SERVERS_SIGNATURE = RowSignature + .builder() + .add("server", ValueType.STRING) + .add("scheme", ValueType.STRING) + .add("server_type", ValueType.STRING) + .add("tier", ValueType.STRING) + .add("curr_size", ValueType.LONG) + .add("max_size", ValueType.LONG) + .build(); + + private static final RowSignature SERVERSEGMENTS_SIGNATURE = RowSignature + .builder() + .add("server", ValueType.STRING) + .add("segment_id", ValueType.STRING) + .build(); + + private static final RowSignature TASKS_SIGNATURE = RowSignature + .builder() + .add("task_id", ValueType.STRING) + .add("type", ValueType.STRING) + .add("datasource", ValueType.STRING) + .add("created_time", ValueType.STRING) + .add("queue_insertion_time", ValueType.STRING) + .add("status", ValueType.STRING) + .add("runner_status", ValueType.STRING) + .add("duration", ValueType.STRING) Review comment: done ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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