-
Notifications
You must be signed in to change notification settings - Fork 3.3k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
HBASE-25895 Implement a Cluster Metrics JSON endpoint
Publishes a set of JSON endpoints following a RESTful structure, which expose a subset of the
`o.a.h.h.ClusterMetrics` object tree. The URI structure is as follows
/api/v1/admin/cluster_metrics
/api/v1/admin/cluster_metrics/live_servers
/api/v1/admin/cluster_metrics/dead_servers
Signed-off-by: Sean Busbey <busbey@apache.org>
Signed-off-by: Andrew Purtell <apurtell@apache.org>- Loading branch information
Showing
19 changed files
with
1,112 additions
and
11 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
38 changes: 38 additions & 0 deletions
38
hbase-http/src/main/java/org/apache/hadoop/hbase/http/gson/ByteArraySerializer.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| /* | ||
| * 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.hadoop.hbase.http.gson; | ||
|
|
||
| import java.lang.reflect.Type; | ||
| import org.apache.hadoop.hbase.util.Bytes; | ||
| import org.apache.yetus.audience.InterfaceAudience; | ||
| import org.apache.hbase.thirdparty.com.google.gson.JsonElement; | ||
| import org.apache.hbase.thirdparty.com.google.gson.JsonPrimitive; | ||
| import org.apache.hbase.thirdparty.com.google.gson.JsonSerializationContext; | ||
| import org.apache.hbase.thirdparty.com.google.gson.JsonSerializer; | ||
|
|
||
| /** | ||
| * Serialize a {@code byte[]} using {@link Bytes#toString()}. | ||
| */ | ||
| @InterfaceAudience.Private | ||
| public final class ByteArraySerializer implements JsonSerializer<byte[]> { | ||
|
|
||
| @Override | ||
| public JsonElement serialize(byte[] src, Type typeOfSrc, JsonSerializationContext context) { | ||
| return new JsonPrimitive(Bytes.toString(src)); | ||
| } | ||
| } |
99 changes: 99 additions & 0 deletions
99
hbase-http/src/main/java/org/apache/hadoop/hbase/http/gson/GsonMessageBodyWriter.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| /* | ||
| * 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.hadoop.hbase.http.gson; | ||
|
|
||
| import java.io.IOException; | ||
| import java.io.OutputStream; | ||
| import java.io.OutputStreamWriter; | ||
| import java.io.Writer; | ||
| import java.lang.annotation.Annotation; | ||
| import java.lang.reflect.Type; | ||
| import java.nio.charset.Charset; | ||
| import java.nio.charset.IllegalCharsetNameException; | ||
| import java.nio.charset.StandardCharsets; | ||
| import java.nio.charset.UnsupportedCharsetException; | ||
| import java.util.Optional; | ||
| import javax.inject.Inject; | ||
| import org.apache.yetus.audience.InterfaceAudience; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
| import org.apache.hbase.thirdparty.com.google.gson.Gson; | ||
| import org.apache.hbase.thirdparty.javax.ws.rs.Produces; | ||
| import org.apache.hbase.thirdparty.javax.ws.rs.WebApplicationException; | ||
| import org.apache.hbase.thirdparty.javax.ws.rs.core.MediaType; | ||
| import org.apache.hbase.thirdparty.javax.ws.rs.core.MultivaluedMap; | ||
| import org.apache.hbase.thirdparty.javax.ws.rs.ext.MessageBodyWriter; | ||
|
|
||
| /** | ||
| * Implements JSON serialization via {@link Gson} for JAX-RS. | ||
| */ | ||
| @InterfaceAudience.Private | ||
| @Produces(MediaType.APPLICATION_JSON) | ||
| public final class GsonMessageBodyWriter<T> implements MessageBodyWriter<T> { | ||
| private static final Logger logger = LoggerFactory.getLogger(GsonMessageBodyWriter.class); | ||
|
|
||
| private final Gson gson; | ||
|
|
||
| @Inject | ||
| public GsonMessageBodyWriter(Gson gson) { | ||
| this.gson = gson; | ||
| } | ||
|
|
||
| @Override | ||
| public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, | ||
| MediaType mediaType) { | ||
| return mediaType == null || MediaType.APPLICATION_JSON_TYPE.isCompatible(mediaType); | ||
| } | ||
|
|
||
| @Override | ||
| public void writeTo( | ||
| T t, | ||
| Class<?> type, | ||
| Type genericType, | ||
| Annotation[] annotations, | ||
| MediaType mediaType, | ||
| MultivaluedMap<String, Object> httpHeaders, | ||
| OutputStream entityStream | ||
| ) throws IOException, WebApplicationException { | ||
| final Charset outputCharset = requestedCharset(mediaType); | ||
| try (Writer writer = new OutputStreamWriter(entityStream, outputCharset)) { | ||
| gson.toJson(t, writer); | ||
| } | ||
| } | ||
|
|
||
| private static Charset requestedCharset(MediaType mediaType) { | ||
| return Optional.ofNullable(mediaType) | ||
| .map(MediaType::getParameters) | ||
| .map(params -> params.get("charset")) | ||
| .map(c -> { | ||
| try { | ||
| return Charset.forName(c); | ||
| } catch (IllegalCharsetNameException e) { | ||
| logger.debug("Client requested illegal Charset '{}'", c); | ||
| return null; | ||
| } catch (UnsupportedCharsetException e) { | ||
| logger.debug("Client requested unsupported Charset '{}'", c); | ||
| return null; | ||
| } catch (Exception e) { | ||
| logger.debug("Error while resolving Charset '{}'", c, e); | ||
| return null; | ||
| } | ||
| }) | ||
| .orElse(StandardCharsets.UTF_8); | ||
| } | ||
| } |
53 changes: 53 additions & 0 deletions
53
hbase-http/src/main/java/org/apache/hadoop/hbase/http/jersey/ResponseEntityMapper.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| /* | ||
| * 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.hadoop.hbase.http.jersey; | ||
|
|
||
| import java.io.IOException; | ||
| import org.apache.yetus.audience.InterfaceAudience; | ||
| import org.apache.hbase.thirdparty.com.google.common.collect.ImmutableMap; | ||
| import org.apache.hbase.thirdparty.javax.ws.rs.container.ContainerRequestContext; | ||
| import org.apache.hbase.thirdparty.javax.ws.rs.container.ContainerResponseContext; | ||
| import org.apache.hbase.thirdparty.javax.ws.rs.container.ContainerResponseFilter; | ||
| import org.apache.hbase.thirdparty.javax.ws.rs.core.Response.Status; | ||
|
|
||
| /** | ||
| * Generate a uniform response wrapper around the Entity returned from the resource. | ||
| * @see <a href="https://jsonapi.org/format/#document-top-level">JSON API Document Structure</a> | ||
| * @see <a href="https://jsonapi.org/format/#error-objects">JSON API Error Objects</a> | ||
| */ | ||
| @InterfaceAudience.Private | ||
| public class ResponseEntityMapper implements ContainerResponseFilter { | ||
|
|
||
| @Override | ||
| public void filter( | ||
| ContainerRequestContext requestContext, | ||
| ContainerResponseContext responseContext | ||
| ) throws IOException { | ||
| /* | ||
| * Follows very loosely the top-level document specification described in by JSON API. Only | ||
| * handles 200 response codes; leaves room for errors and other response types. | ||
| */ | ||
|
|
||
| final int statusCode = responseContext.getStatus(); | ||
| if (Status.OK.getStatusCode() != statusCode) { | ||
| return; | ||
| } | ||
|
|
||
| responseContext.setEntity(ImmutableMap.of("data", responseContext.getEntity())); | ||
| } | ||
| } |
42 changes: 42 additions & 0 deletions
42
hbase-http/src/main/java/org/apache/hadoop/hbase/http/jersey/SupplierFactoryAdapter.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| /* | ||
| * 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.hadoop.hbase.http.jersey; | ||
|
|
||
| import java.util.function.Supplier; | ||
| import org.apache.yetus.audience.InterfaceAudience; | ||
| import org.apache.hbase.thirdparty.org.glassfish.hk2.api.Factory; | ||
|
|
||
| /** | ||
| * Use a {@link Supplier} of type {@code T} as a {@link Factory} that provides instances of | ||
| * {@code T}. Modeled after Jersey's internal implementation. | ||
| */ | ||
| @InterfaceAudience.Private | ||
| public class SupplierFactoryAdapter<T> implements Factory<T> { | ||
|
|
||
| private final Supplier<T> supplier; | ||
|
|
||
| public SupplierFactoryAdapter(Supplier<T> supplier) { | ||
| this.supplier = supplier; | ||
| } | ||
|
|
||
| @Override public T provide() { | ||
| return supplier.get(); | ||
| } | ||
|
|
||
| @Override public void dispose(T instance) { } | ||
| } |
Oops, something went wrong.