simonbence commented on a change in pull request #4714: URL: https://github.com/apache/nifi/pull/4714#discussion_r539449901
########## File path: nifi-nar-bundles/nifi-splunk-bundle/nifi-splunk-processors/src/main/java/org/apache/nifi/processors/splunk/PutSplunkHTTP.java ########## @@ -0,0 +1,254 @@ +/* + * 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.nifi.processors.splunk; + +import com.splunk.RequestMessage; +import com.splunk.ResponseMessage; +import org.apache.commons.io.IOUtils; +import org.apache.nifi.annotation.behavior.InputRequirement; +import org.apache.nifi.annotation.documentation.CapabilityDescription; +import org.apache.nifi.annotation.documentation.Tags; +import org.apache.nifi.annotation.lifecycle.OnScheduled; +import org.apache.nifi.annotation.lifecycle.OnUnscheduled; +import org.apache.nifi.components.PropertyDescriptor; +import org.apache.nifi.dto.splunk.SendRawDataResponse; +import org.apache.nifi.dto.splunk.SendRawDataSuccessResponse; +import org.apache.nifi.expression.ExpressionLanguageScope; +import org.apache.nifi.flowfile.FlowFile; +import org.apache.nifi.processor.ProcessContext; +import org.apache.nifi.processor.ProcessSession; +import org.apache.nifi.processor.Relationship; +import org.apache.nifi.processor.exception.ProcessException; +import org.apache.nifi.processor.util.StandardValidators; + +import java.io.StringWriter; +import java.nio.charset.Charset; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.HashSet; +import java.util.List; +import java.util.Map; +import java.util.Optional; +import java.util.Set; +import java.util.stream.Collectors; + +@InputRequirement(InputRequirement.Requirement.INPUT_REQUIRED) +@Tags({"splunk", "logs", "http"}) +@CapabilityDescription("Sends events to the specified Splunk server over HTTP or HTTPS. Supports HEC Index Acknowledgement.") +public class PutSplunkHTTP extends SplunkAPICall { + private static final String ENDPOINT = "/services/collector/raw"; + + static final PropertyDescriptor SOURCE = new PropertyDescriptor.Builder() + .name("source") + .displayName("Source") + .description("User-defined event source. Sets a default for all events when unspecified.") + .required(false) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY) + .build(); + + static final PropertyDescriptor SOURCE_TYPE = new PropertyDescriptor.Builder() + .name("source-type") + .displayName("Source Type") + .description("User-defined event sourcetype. Sets a default for all events when unspecified.") + .required(false) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY) + .build(); + + static final PropertyDescriptor HOST = new PropertyDescriptor.Builder() + .name("host") + .displayName("Host") + .description("Specify with the host query string parameter. Sets a default for all events when unspecified.") + .required(false) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY) + .build(); + + static final PropertyDescriptor INDEX = new PropertyDescriptor.Builder() + .name("index") + .displayName("Index") + .description("Index name. Specify with the index query string parameter. Sets a default for all events when unspecified.") + .required(false) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY) + .build(); + + static final PropertyDescriptor CHARSET = new PropertyDescriptor.Builder() + .name("character-set") + .displayName("Character Set") + .description("The name of the character set.") + .required(true) + .addValidator(StandardValidators.CHARACTER_SET_VALIDATOR) + .defaultValue(Charset.defaultCharset().name()) + .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY) + .build(); + + static final PropertyDescriptor CONTENT_TYPE = new PropertyDescriptor.Builder() + .name("content-type") + .displayName("Content Type") + .description( + "The media type of the event sent to Splunk. " + + "If not set, \"mime.type\" flow file attribute will be used. " + + "In case of neither of them is specified, this information will not be sent to the server.") + .required(false) + .addValidator(StandardValidators.NON_EMPTY_VALIDATOR) + .expressionLanguageSupported(ExpressionLanguageScope.VARIABLE_REGISTRY) + .build(); + + static final Relationship RELATIONSHIP_SUCCESS = new Relationship.Builder() + .name("success") + .description("FlowFiles that are sent successfully to the destination are sent out this relationship.") + .build(); + + static final Relationship RELATIONSHIP_FAILURE = new Relationship.Builder() + .name("failure") + .description("FlowFiles that failed to send to the destination are sent out this relationship.") + .build(); + + private static final Set<Relationship> RELATIONSHIPS = Collections.unmodifiableSet(new HashSet<>(Arrays.asList( + RELATIONSHIP_SUCCESS, + RELATIONSHIP_FAILURE))); + + @Override + public Set<Relationship> getRelationships() { + return RELATIONSHIPS; + } + + @Override + public List<PropertyDescriptor> getSupportedPropertyDescriptors() { + final List<PropertyDescriptor> result = new ArrayList<>(super.getSupportedPropertyDescriptors()); + result.add(SOURCE); + result.add(SOURCE_TYPE); + result.add(HOST); + result.add(INDEX); + result.add(CONTENT_TYPE); + result.add(CHARSET); + return result; + } + + private volatile String endpoint; + private volatile String contentType; + private volatile String charset; + + @OnScheduled + public void onScheduled(final ProcessContext context) { + super.onScheduled(context); + + if (context.getProperty(CONTENT_TYPE).isSet()) { + contentType = context.getProperty(CONTENT_TYPE).evaluateAttributeExpressions().getValue(); + } + + charset = context.getProperty(CHARSET).evaluateAttributeExpressions().getValue(); + + final Map<String, String> queryParameters = new HashMap<>(); + + if (context.getProperty(SOURCE_TYPE).isSet()) { + queryParameters.put("sourcetype", context.getProperty(SOURCE_TYPE).evaluateAttributeExpressions().getValue()); + } + + if (context.getProperty(SOURCE).isSet()) { + queryParameters.put("source", context.getProperty(SOURCE).evaluateAttributeExpressions().getValue()); + } + + if (context.getProperty(HOST).isSet()) { + queryParameters.put("host", context.getProperty(HOST).evaluateAttributeExpressions().getValue()); + } + + if (context.getProperty(INDEX).isSet()) { + queryParameters.put("index", context.getProperty(INDEX).evaluateAttributeExpressions().getValue()); + } + + if (queryParameters.isEmpty()) { + endpoint = ENDPOINT; + } else { + endpoint = ENDPOINT + '?' + queryParameters.entrySet().stream().map(e -> e.getKey() + '=' + e.getValue()).collect(Collectors.joining("&")); + } + } + + @OnUnscheduled + public void onUnscheduled() { + super.onUnscheduled(); + contentType = null; + charset = null; + endpoint = null; + } + + @Override + public void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException { + final FlowFile incomingFlowFile = session.get(); Review comment: I was thinking that @InputRequirement(InputRequirement.Requirement.INPUT_REQUIRED) should prevent from this, but thanks ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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