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103 changes: 103 additions & 0 deletions
103
src/main/java/org/opensearch/flowframework/workflow/HttpHostStep.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
| package org.opensearch.flowframework.workflow; | ||
|
|
||
| import org.apache.hc.core5.http.HttpHost; | ||
| import org.apache.logging.log4j.LogManager; | ||
| import org.apache.logging.log4j.Logger; | ||
| import org.opensearch.action.support.PlainActionFuture; | ||
| import org.opensearch.core.rest.RestStatus; | ||
| import org.opensearch.flowframework.exception.FlowFrameworkException; | ||
| import org.opensearch.flowframework.util.ParseUtils; | ||
|
|
||
| import java.util.Collections; | ||
| import java.util.Locale; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
|
|
||
| import static org.opensearch.flowframework.common.CommonValue.HOSTNAME_FIELD; | ||
| import static org.opensearch.flowframework.common.CommonValue.HTTP_HOST_FIELD; | ||
| import static org.opensearch.flowframework.common.CommonValue.PORT_FIELD; | ||
| import static org.opensearch.flowframework.common.CommonValue.SCHEME_FIELD; | ||
|
|
||
| /** | ||
| * Step to register parameters for an HTTP Connection to a Host | ||
| */ | ||
| public class HttpHostStep implements WorkflowStep { | ||
|
|
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| private static final Logger logger = LogManager.getLogger(HttpHostStep.class); | ||
| PlainActionFuture<WorkflowData> hostFuture = PlainActionFuture.newFuture(); | ||
| static final String NAME = "http_host"; | ||
|
|
||
| @Override | ||
| public PlainActionFuture<WorkflowData> execute( | ||
| String currentNodeId, | ||
| WorkflowData currentNodeInputs, | ||
| Map<String, WorkflowData> outputs, | ||
| Map<String, String> previousNodeInputs | ||
| ) { | ||
| Set<String> requiredKeys = Set.of(SCHEME_FIELD, HOSTNAME_FIELD, PORT_FIELD); | ||
| Set<String> optionalKeys = Collections.emptySet(); | ||
|
|
||
| try { | ||
| Map<String, Object> inputs = ParseUtils.getInputsFromPreviousSteps( | ||
| requiredKeys, | ||
| optionalKeys, | ||
| currentNodeInputs, | ||
| outputs, | ||
| previousNodeInputs | ||
| ); | ||
|
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| String scheme = validScheme(inputs.get(SCHEME_FIELD)); | ||
| String hostname = inputs.get(HOSTNAME_FIELD).toString(); | ||
| int port = validPort(inputs.get(PORT_FIELD)); | ||
|
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| HttpHost httpHost = new HttpHost(scheme, hostname, port); | ||
|
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| hostFuture.onResponse( | ||
| new WorkflowData( | ||
| Map.ofEntries(Map.entry(HTTP_HOST_FIELD, httpHost)), | ||
| currentNodeInputs.getWorkflowId(), | ||
| currentNodeInputs.getNodeId() | ||
| ) | ||
| ); | ||
|
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| logger.info("Http Host registered successfully {}", httpHost); | ||
|
|
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| } catch (FlowFrameworkException e) { | ||
| hostFuture.onFailure(e); | ||
| } | ||
| return hostFuture; | ||
| } | ||
|
|
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| private String validScheme(Object o) { | ||
| String scheme = o.toString().toLowerCase(Locale.ROOT); | ||
| if ("http".equals(scheme) || "https".equals(scheme)) { | ||
| return scheme; | ||
| } | ||
| throw new FlowFrameworkException("http_host scheme must be http or https", RestStatus.BAD_REQUEST); | ||
| } | ||
|
|
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| private int validPort(Object o) { | ||
| try { | ||
| int port = Integer.parseInt(o.toString()); | ||
| if ((port & 0xffff0000) != 0) { | ||
| throw new FlowFrameworkException("http_host port number must be between 0 and 65535", RestStatus.BAD_REQUEST); | ||
| } | ||
| return port; | ||
| } catch (NumberFormatException e) { | ||
| throw new FlowFrameworkException("http_host port must be a number between 0 and 65535", RestStatus.BAD_REQUEST); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public String getName() { | ||
| return NAME; | ||
| } | ||
| } |
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