| /* |
| * 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.beam.runners.extensions.metrics; |
| |
| import com.fasterxml.jackson.core.JsonGenerator; |
| import com.fasterxml.jackson.databind.JsonMappingException; |
| import com.fasterxml.jackson.databind.MapperFeature; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.fasterxml.jackson.databind.SerializationFeature; |
| import com.fasterxml.jackson.databind.SerializerProvider; |
| import com.fasterxml.jackson.databind.module.SimpleModule; |
| import com.fasterxml.jackson.databind.ser.impl.SimpleBeanPropertyFilter; |
| import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider; |
| import com.fasterxml.jackson.databind.ser.std.StdSerializer; |
| import com.fasterxml.jackson.datatype.joda.JodaModule; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.net.HttpURLConnection; |
| import java.net.URL; |
| import java.nio.charset.StandardCharsets; |
| import javax.xml.ws.http.HTTPException; |
| import org.apache.beam.sdk.annotations.Experimental; |
| import org.apache.beam.sdk.metrics.MetricKey; |
| import org.apache.beam.sdk.metrics.MetricName; |
| import org.apache.beam.sdk.metrics.MetricQueryResults; |
| import org.apache.beam.sdk.metrics.MetricResult; |
| import org.apache.beam.sdk.metrics.MetricsOptions; |
| import org.apache.beam.sdk.metrics.MetricsSink; |
| |
| /** HTTP Sink to push metrics in a POST HTTP request. */ |
| public class MetricsHttpSink implements MetricsSink { |
| private final String urlString; |
| private final ObjectMapper objectMapper = new ObjectMapper(); |
| |
| public MetricsHttpSink(MetricsOptions pipelineOptions) { |
| this.urlString = pipelineOptions.getMetricsHttpSinkUrl(); |
| } |
| |
| @Experimental(Experimental.Kind.METRICS) |
| @Override |
| public void writeMetrics(MetricQueryResults metricQueryResults) throws Exception { |
| URL url = new URL(urlString); |
| String metrics = serializeMetrics(metricQueryResults); |
| byte[] postData = metrics.getBytes(StandardCharsets.UTF_8); |
| HttpURLConnection connection = (HttpURLConnection) url.openConnection(); |
| connection.setDoOutput(true); |
| connection.setInstanceFollowRedirects(false); |
| connection.setRequestMethod("POST"); |
| connection.setRequestProperty("Content-Type", "application/json"); |
| connection.setRequestProperty("charset", "utf-8"); |
| connection.setRequestProperty("Content-Length", Integer.toString(postData.length)); |
| connection.setUseCaches(false); |
| try (DataOutputStream connectionOuputStream = |
| new DataOutputStream(connection.getOutputStream())) { |
| connectionOuputStream.write(postData); |
| } |
| int responseCode = connection.getResponseCode(); |
| if (responseCode != 200) { |
| throw new HTTPException(responseCode); |
| } |
| } |
| |
| /** |
| * JSON serializer for {@link MetricName}; simple {namespace,name} for user-metrics, full URN for |
| * system metrics. |
| */ |
| public static class MetricNameSerializer extends StdSerializer<MetricName> { |
| public MetricNameSerializer(Class<MetricName> t) { |
| super(t); |
| } |
| |
| @Override |
| public void serialize(MetricName value, JsonGenerator gen, SerializerProvider provider) |
| throws IOException { |
| gen.writeStartObject(); |
| gen.writeObjectField("name", value.name()); |
| gen.writeObjectField("namespace", value.namespace()); |
| gen.writeEndObject(); |
| } |
| } |
| |
| /** |
| * JSON serializer for {@link MetricKey}; output a {@link MetricName "name"} object and a "step" |
| * or "pcollection" field with the corresponding label. |
| */ |
| public static class MetricKeySerializer extends StdSerializer<MetricKey> { |
| public MetricKeySerializer(Class<MetricKey> t) { |
| super(t); |
| } |
| |
| public void inline(MetricKey value, JsonGenerator gen, SerializerProvider provider) |
| throws IOException { |
| gen.writeObjectField("name", value.metricName()); |
| gen.writeObjectField("step", value.stepName()); |
| } |
| |
| @Override |
| public void serialize(MetricKey value, JsonGenerator gen, SerializerProvider provider) |
| throws IOException { |
| gen.writeStartObject(); |
| inline(value, gen, provider); |
| gen.writeEndObject(); |
| } |
| } |
| |
| /** |
| * JSON serializer for {@link MetricResult}; conform to an older format where the {@link MetricKey |
| * key's} {@link MetricName name} and "step" (ptransform) are inlined. |
| */ |
| public static class MetricResultSerializer extends StdSerializer<MetricResult> { |
| private final MetricKeySerializer keySerializer; |
| |
| public MetricResultSerializer(Class<MetricResult> t) { |
| super(t); |
| keySerializer = new MetricKeySerializer(MetricKey.class); |
| } |
| |
| @Override |
| public void serialize(MetricResult value, JsonGenerator gen, SerializerProvider provider) |
| throws IOException { |
| gen.writeStartObject(); |
| gen.writeObjectField("attempted", value.getAttempted()); |
| if (value.hasCommitted()) { |
| gen.writeObjectField("committed", value.getCommitted()); |
| } |
| keySerializer.inline(value.getKey(), gen, provider); |
| gen.writeEndObject(); |
| } |
| } |
| |
| private String serializeMetrics(MetricQueryResults metricQueryResults) throws Exception { |
| SimpleModule module = new JodaModule(); |
| module.addSerializer(new MetricNameSerializer(MetricName.class)); |
| module.addSerializer(new MetricKeySerializer(MetricKey.class)); |
| module.addSerializer(new MetricResultSerializer(MetricResult.class)); |
| objectMapper.registerModule(module); |
| objectMapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS); |
| objectMapper.configure(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY, true); |
| // need to register a filter as soon as @JsonFilter annotation is specified. |
| // So specify an pass through filter |
| SimpleBeanPropertyFilter filter = SimpleBeanPropertyFilter.serializeAll(); |
| SimpleFilterProvider filterProvider = new SimpleFilterProvider(); |
| filterProvider.addFilter("committedMetrics", filter); |
| objectMapper.setFilterProvider(filterProvider); |
| String result; |
| try { |
| result = objectMapper.writeValueAsString(metricQueryResults); |
| } catch (JsonMappingException exception) { |
| if ((exception.getCause() instanceof UnsupportedOperationException) |
| && exception.getCause().getMessage().contains("committed metrics")) { |
| filterProvider.removeFilter("committedMetrics"); |
| filter = SimpleBeanPropertyFilter.serializeAllExcept("committed"); |
| filterProvider.addFilter("committedMetrics", filter); |
| result = objectMapper.writeValueAsString(metricQueryResults); |
| } else { |
| throw exception; |
| } |
| } |
| return result; |
| } |
| } |