[GitHub] [camel] aldettinger commented on a change in pull request #4447: CAMEL-15689 - Add camel-atlasmap component

[GitBox <gi...@apache.org>]

aldettinger commented on a change in pull request #4447:
URL: https://github.com/apache/camel/pull/4447#discussion_r505297855



##########
File path: components/camel-atlasmap/src/main/java/org/apache/camel/component/atlasmap/AtlasMapEndpoint.java
##########
@@ -0,0 +1,444 @@
+/*
+ * 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.camel.component.atlasmap;
+
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+
+import io.atlasmap.api.AtlasContext;
+import io.atlasmap.api.AtlasContextFactory;
+import io.atlasmap.api.AtlasException;
+import io.atlasmap.api.AtlasSession;
+import io.atlasmap.core.DefaultAtlasContextFactory;
+import io.atlasmap.v2.Audit;
+import io.atlasmap.v2.DataSource;
+import io.atlasmap.v2.DataSourceType;
+import org.apache.camel.Category;
+import org.apache.camel.Exchange;
+import org.apache.camel.ExchangePattern;
+import org.apache.camel.Message;
+import org.apache.camel.component.ResourceEndpoint;
+import org.apache.camel.spi.UriEndpoint;
+import org.apache.camel.spi.UriParam;
+import org.apache.camel.support.MessageHelper;
+import org.apache.camel.support.ResourceHelper;
+import org.apache.camel.util.IOHelper;
+import org.apache.camel.util.ObjectHelper;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static io.atlasmap.api.AtlasContextFactory.Format.ADM;
+import static io.atlasmap.api.AtlasContextFactory.Format.JSON;
+
+/**
+ * Transforms the message using an AtlasMap transformation.
+ */
+@UriEndpoint(firstVersion = "3.7.0", scheme = "atlasmap", title = "AtlasMap", syntax = "atlasmap:resourceUri",
+             producerOnly = true, category = { Category.TRANSFORMATION })
+public class AtlasMapEndpoint extends ResourceEndpoint {
+
+    public static final String CONTENT_TYPE_JSON = "application/json";
+    public static final String CONTENT_TYPE_XML = "application/xml";
+
+    private static final Logger LOG = LoggerFactory.getLogger(AtlasMapEndpoint.class);
+    private AtlasContextFactory atlasContextFactory;
+    private AtlasContext atlasContext;
+
+    @UriParam(label = "advanced")
+    private String propertiesFile;
+    @UriParam
+    private String sourceMapName;
+    @UriParam
+    private String targetMapName;
+    @UriParam(defaultValue = "MAP")
+    private TargetMapMode targetMapMode = TargetMapMode.MAP;
+
+    public enum TargetMapMode {
+        MAP,
+        MESSAGE_HEADER,
+        EXCHANGE_PROPERTY;
+    }
+
+    public AtlasMapEndpoint(String uri, AtlasMapComponent component, String resourceUri) {
+        super(uri, component, resourceUri);
+    }
+
+    @Override
+    public boolean isSingleton() {
+        return true;
+    }
+
+    @Override
+    public ExchangePattern getExchangePattern() {
+        return ExchangePattern.InOut;
+    }
+
+    @Override
+    protected String createEndpointUri() {
+        return "atlasmap:" + getResourceUri();
+    }
+
+    public AtlasContextFactory getAtlasContextFactory() {
+        return this.atlasContextFactory;
+    }
+
+    public void setAtlasContextFactory(AtlasContextFactory atlasContextFactory) {
+        this.atlasContextFactory = atlasContextFactory;
+    }
+
+    public AtlasContext getAtlasContext() {
+        return this.atlasContext;
+    }
+
+    public void setAtlasContext(AtlasContext atlasContext) {
+        this.atlasContext = atlasContext;
+    }
+
+    /**
+     * The URI of the properties file which is used for AtlasContextFactory initialization.
+     * 
+     * @param file property file path
+     */
+    public void setPropertiesFile(String file) {
+        propertiesFile = file;
+    }
+
+    public String getPropertiesFile() {
+        return propertiesFile;
+    }
+
+    /**
+     * The Exchange property name for a source message map which hold <code>java.util.Map&lt;String, Message&gt;</code>
+     * where the key is AtlasMap Document ID. AtlasMap consumes Message bodies as source documents, as well as message
+     * headers as source properties where the scope equals to Document ID.
+     * 
+     * @param name Exchange property name for source map
+     */
+    public void setSourceMapName(String name) {
+        this.sourceMapName = name;
+    }
+
+    public String getSourceMapName() {
+        return this.sourceMapName;
+    }
+
+    /**
+     * The Exchange property name for a target document map which hold <code>java.util.Map&lt;String, Object&gt;</code>
+     * where the key is AtlasMap Document ID. AtlasMap populates multiple target documents into this map.
+     * 
+     * @param name Exchange property name for target map
+     */
+    public void setTargetMapName(String name) {
+        this.targetMapName = name;
+    }
+
+    public String getTargetMapName() {
+        return this.targetMapName;
+    }
+
+    /**
+     * {@link TargetMapMode} enum value to specify how multiple target documents are delivered if exist.
+     * <ul>
+     * <li>'MAP': Stores them into a java.util.Map, and the java.util.Map is set to an exchange" property if
+     * 'targetMapName' is specified, otherwise message body.</li>"
+     * <li>'MESSAGE_HEADER': Stores them into message headers.</li>"
+     * <li>'EXCHANGE_PROPERTY': Stores them into exchange properties.</li>
+     * </ul>
+     * ")
+     * 
+     * @param mode {@link TargetMapMode}
+     */
+    public void setTargetMapMode(TargetMapMode mode) {
+        this.targetMapMode = mode;
+    }
+
+    public TargetMapMode getTargetMapMode() {
+        return this.targetMapMode;
+    }
+
+    public AtlasMapEndpoint findOrCreateEndpoint(String uri, String newResourceUri) {
+        String newUri = uri.replace(getResourceUri(), newResourceUri);
+        log.debug("Getting endpoint with URI: {}", newUri);
+        return getCamelContext().getEndpoint(newUri, AtlasMapEndpoint.class);
+    }
+
+    @Override
+    protected void onExchange(Exchange exchange) throws Exception {
+        Message incomingMessage = exchange.getIn();
+        String newResourceUri = incomingMessage.getHeader(AtlasMapConstants.ATLAS_RESOURCE_URI, String.class);
+        if (newResourceUri != null) {
+            incomingMessage.removeHeader(AtlasMapConstants.ATLAS_RESOURCE_URI);
+
+            log.debug("{} set to {} creating new endpoint to handle exchange", AtlasMapConstants.ATLAS_RESOURCE_URI,
+                    newResourceUri);
+            AtlasMapEndpoint newEndpoint = findOrCreateEndpoint(getEndpointUri(), newResourceUri);
+            newEndpoint.onExchange(exchange);
+            return;
+        }
+
+        AtlasSession atlasSession = getOrCreateAtlasContext(incomingMessage).createSession();
+        populateSourceDocuments(exchange, atlasSession);
+        atlasSession.getAtlasContext().process(atlasSession);
+
+        List<Audit> errors = new ArrayList<>();
+        for (Audit audit : atlasSession.getAudits().getAudit()) {
+            switch (audit.getStatus()) {
+                case ERROR:
+                    errors.add(audit);
+                    break;
+                case WARN:
+                    LOG.warn("{}: Document='{}(ID:{})', path='{}'",
+                            audit.getMessage(), audit.getDocName(), audit.getDocId(), audit.getPath());
+                    break;
+                default:
+                    LOG.info("{}: Document='{}(ID:{})', path='{}'",
+                            audit.getMessage(), audit.getDocName(), audit.getDocId(), audit.getPath());
+            }
+        }
+        if (!errors.isEmpty()) {
+            StringBuilder buf = new StringBuilder("Errors: ");
+            errors.stream().forEach(a -> buf.append(
+                    String.format("[%s: Document='{}(ID:{})', path='%s'], ",

Review comment:
       Do we have a mix here where last 2 params are ignored ?




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