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Posted to commits@camel.apache.org by da...@apache.org on 2017/01/19 11:06:45 UTC

[05/17] camel git commit: CAMEL-10721: camel-connector

CAMEL-10721: camel-connector


Project: http://git-wip-us.apache.org/repos/asf/camel/repo
Commit: http://git-wip-us.apache.org/repos/asf/camel/commit/18aa245f
Tree: http://git-wip-us.apache.org/repos/asf/camel/tree/18aa245f
Diff: http://git-wip-us.apache.org/repos/asf/camel/diff/18aa245f

Branch: refs/heads/master
Commit: 18aa245f75671baf6b9764fc678311664e50168d
Parents: 917b1b0
Author: Claus Ibsen <da...@apache.org>
Authored: Wed Jan 18 13:36:56 2017 +0100
Committer: Claus Ibsen <da...@apache.org>
Committed: Thu Jan 19 11:00:00 2017 +0100

----------------------------------------------------------------------
 connectors/camel-connector/pom.xml              |  48 ++++
 .../connector/DefaultConnectorComponent.java    | 279 +++++++++++++++++++
 .../connector/DefaultConnectorEndpoint.java     |  76 +++++
 .../src/main/resources/META-INF/LICENSE.txt     | 203 ++++++++++++++
 .../src/main/resources/META-INF/NOTICE.txt      |  11 +
 connectors/pom.xml                              |  38 +++
 pom.xml                                         |   1 +
 7 files changed, 656 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/camel/blob/18aa245f/connectors/camel-connector/pom.xml
----------------------------------------------------------------------
diff --git a/connectors/camel-connector/pom.xml b/connectors/camel-connector/pom.xml
new file mode 100644
index 0000000..c53b02c
--- /dev/null
+++ b/connectors/camel-connector/pom.xml
@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.camel</groupId>
+    <artifactId>connectors</artifactId>
+    <version>2.19.0-SNAPSHOT</version>
+  </parent>
+
+  <artifactId>camel-connector</artifactId>
+  <packaging>jar</packaging>
+  <name>Camel :: Connector</name>
+  <description>Camel Connector</description>
+
+  <properties>
+    <camel.osgi.export.pkg>org.apache.camel.component.connector.*</camel.osgi.export.pkg>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>org.apache.camel</groupId>
+      <artifactId>camel-core</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>org.apache.camel</groupId>
+      <artifactId>camel-catalog</artifactId>
+    </dependency>
+  </dependencies>
+
+</project>

http://git-wip-us.apache.org/repos/asf/camel/blob/18aa245f/connectors/camel-connector/src/main/java/org/apache/camel/component/connector/DefaultConnectorComponent.java
----------------------------------------------------------------------
diff --git a/connectors/camel-connector/src/main/java/org/apache/camel/component/connector/DefaultConnectorComponent.java b/connectors/camel-connector/src/main/java/org/apache/camel/component/connector/DefaultConnectorComponent.java
new file mode 100644
index 0000000..d0ef3c9
--- /dev/null
+++ b/connectors/camel-connector/src/main/java/org/apache/camel/component/connector/DefaultConnectorComponent.java
@@ -0,0 +1,279 @@
+/**
+ * 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.connector;
+
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.LineNumberReader;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Enumeration;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.apache.camel.Endpoint;
+import org.apache.camel.catalog.CamelCatalog;
+import org.apache.camel.catalog.DefaultCamelCatalog;
+import org.apache.camel.impl.DefaultComponent;
+import org.apache.camel.util.IOHelper;
+import org.apache.camel.util.IntrospectionSupport;
+import org.apache.camel.util.StringHelper;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Base class for Camel Connector components.
+ */
+public abstract class DefaultConnectorComponent extends DefaultComponent {
+
+    private static final Pattern JAVA_TYPE_PATTERN = Pattern.compile("\"javaType\"\\s?:\\s?\"([\\w|.]+)\".*");
+    private static final Pattern BASE_JAVA_TYPE_PATTERN = Pattern.compile("\"baseJavaType\"\\s?:\\s?\"([\\w|.]+)\".*");
+    private static final Pattern BASE_SCHEMA_PATTERN = Pattern.compile("\"baseScheme\"\\s?:\\s?\"([\\w|.]+)\".*");
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+
+    private final CamelCatalog catalog = new DefaultCamelCatalog(false);
+
+    private final String componentName;
+    private final String className;
+    private List<String> lines;
+
+    public DefaultConnectorComponent(String componentName, String className) {
+        this.componentName = componentName;
+        this.className = className;
+
+        // add to catalog
+        catalog.addComponent(componentName, className);
+    }
+
+    @Override
+    protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception {
+        String scheme = extractBaseScheme(lines);
+
+        Map<String, String> defaultOptions = extractEndpointDefaultValues(lines);
+
+        // gather all options to use when building the delegate uri
+        Map<String, String> options = new LinkedHashMap<>();
+
+        // default options from connector json
+        if (!defaultOptions.isEmpty()) {
+            options.putAll(defaultOptions);
+        }
+        // options from query parameters
+        for (Map.Entry<String, Object> entry : parameters.entrySet()) {
+            String key = entry.getKey();
+            String value = null;
+            if (entry.getValue() != null) {
+                value = entry.getValue().toString();
+            }
+            options.put(key, value);
+        }
+        parameters.clear();
+
+        // add extra options from remaining (context-path)
+        if (remaining != null) {
+            String targetUri = scheme + ":" + remaining;
+            Map<String, String> extra = catalog.endpointProperties(targetUri);
+            if (extra != null && !extra.isEmpty()) {
+                options.putAll(extra);
+            }
+        }
+
+        String delegateUri = catalog.asEndpointUri(scheme, options, false);
+        log.debug("Connector resolved: {} -> {}", uri, delegateUri);
+
+        Endpoint delegate = getCamelContext().getEndpoint(delegateUri);
+
+        return new DefaultConnectorEndpoint(uri, this, delegate);
+    }
+
+    private List<String> findCamelConnectorJSonSchema() throws Exception {
+        Enumeration<URL> urls = getClass().getClassLoader().getResources("camel-connector.json");
+        while (urls.hasMoreElements()) {
+            URL url = urls.nextElement();
+            InputStream is = url.openStream();
+            if (is != null) {
+                List<String> lines = loadFile(is);
+                IOHelper.close(is);
+
+                String javaType = extractJavaType(lines);
+                log.trace("Found camel-connector.json in classpath with javaType: {}", javaType);
+
+                if (className.equals(javaType)) {
+                    return lines;
+                }
+            }
+        }
+        return null;
+    }
+
+    @Override
+    protected void doStart() throws Exception {
+        this.lines = findCamelConnectorJSonSchema();
+        if (lines == null) {
+            throw new IllegalArgumentException("Cannot find camel-connector.json in classpath for connector " + componentName);
+        }
+
+        // it may be a custom component so we need to register this in the camel catalog also
+        String scheme = extractBaseScheme(lines);
+        if (!catalog.findComponentNames().contains(scheme)) {
+            String javaType = extractBaseJavaType(lines);
+            catalog.addComponent(scheme, javaType);
+        }
+
+        // the connector may have default values for the component level also
+        // and if so we need to prepare these values and set on this component before we can start
+
+        Map<String, String> defaultOptions = extractComponentDefaultValues(lines);
+
+        if (!defaultOptions.isEmpty()) {
+            Map<String, Object> parameters = new LinkedHashMap<>();
+            for (Map.Entry<String, String> entry : defaultOptions.entrySet()) {
+                String key = entry.getKey();
+                String value = entry.getValue();
+                if (value != null) {
+                    // also support {{ }} placeholders so resolve those first
+                    value = getCamelContext().resolvePropertyPlaceholders(value);
+                    log.debug("Using component option: {}={}", key, value);
+                    parameters.put(key, value);
+                }
+            }
+            IntrospectionSupport.setProperties(getCamelContext(), getCamelContext().getTypeConverter(), this, parameters);
+        }
+
+        log.debug("Starting connector: {}", componentName);
+
+        super.doStart();
+    }
+
+    @Override
+    protected void doStop() throws Exception {
+        log.debug("Stopping connector: {}", componentName);
+
+        super.doStop();
+    }
+
+    // --------------------------------------------------------------
+
+    private Map<String, String> extractComponentDefaultValues(List<String> lines) {
+        Map<String, String> answer = new LinkedHashMap<>();
+
+        // extract the default options
+        boolean found = false;
+        for (String line : lines) {
+            line = line.trim();
+            if (line.startsWith("\"componentValues\":")) {
+                found = true;
+            } else if (line.startsWith("}")) {
+                found = false;
+            } else if (found) {
+                int pos = line.indexOf(':');
+                String key = line.substring(0, pos);
+                String value = line.substring(pos + 1);
+                if (value.endsWith(",")) {
+                    value = value.substring(0, value.length() - 1);
+                }
+                key = StringHelper.removeLeadingAndEndingQuotes(key);
+                value = StringHelper.removeLeadingAndEndingQuotes(value);
+                answer.put(key, value);
+            }
+        }
+
+        return answer;
+    }
+
+    private Map<String, String> extractEndpointDefaultValues(List<String> lines) {
+        Map<String, String> answer = new LinkedHashMap<>();
+
+        // extract the default options
+        boolean found = false;
+        for (String line : lines) {
+            line = line.trim();
+            if (line.startsWith("\"endpointValues\":")) {
+                found = true;
+            } else if (line.startsWith("}")) {
+                found = false;
+            } else if (found) {
+                int pos = line.indexOf(':');
+                String key = line.substring(0, pos);
+                String value = line.substring(pos + 1);
+                if (value.endsWith(",")) {
+                    value = value.substring(0, value.length() - 1);
+                }
+                key = StringHelper.removeLeadingAndEndingQuotes(key);
+                value = StringHelper.removeLeadingAndEndingQuotes(value);
+                answer.put(key, value);
+            }
+        }
+
+        return answer;
+    }
+
+    private List<String> loadFile(InputStream fis) throws Exception {
+        List<String> lines = new ArrayList<>();
+        LineNumberReader reader = new LineNumberReader(new InputStreamReader(fis));
+
+        String line;
+        do {
+            line = reader.readLine();
+            if (line != null) {
+                lines.add(line);
+            }
+        } while (line != null);
+        reader.close();
+
+        return lines;
+    }
+
+    private String extractJavaType(List<String> json) {
+        for (String line : json) {
+            line = line.trim();
+            Matcher matcher = JAVA_TYPE_PATTERN.matcher(line);
+            if (matcher.matches()) {
+                return matcher.group(1);
+            }
+        }
+        return null;
+    }
+
+    private String extractBaseJavaType(List<String> json) {
+        for (String line : json) {
+            line = line.trim();
+            Matcher matcher = BASE_JAVA_TYPE_PATTERN.matcher(line);
+            if (matcher.matches()) {
+                return matcher.group(1);
+            }
+        }
+        return null;
+    }
+
+    private String extractBaseScheme(List<String> json) {
+        for (String line : json) {
+            line = line.trim();
+            Matcher matcher = BASE_SCHEMA_PATTERN.matcher(line);
+            if (matcher.matches()) {
+                return matcher.group(1);
+            }
+        }
+        return null;
+    }
+
+}
+

http://git-wip-us.apache.org/repos/asf/camel/blob/18aa245f/connectors/camel-connector/src/main/java/org/apache/camel/component/connector/DefaultConnectorEndpoint.java
----------------------------------------------------------------------
diff --git a/connectors/camel-connector/src/main/java/org/apache/camel/component/connector/DefaultConnectorEndpoint.java b/connectors/camel-connector/src/main/java/org/apache/camel/component/connector/DefaultConnectorEndpoint.java
new file mode 100644
index 0000000..f8743f2
--- /dev/null
+++ b/connectors/camel-connector/src/main/java/org/apache/camel/component/connector/DefaultConnectorEndpoint.java
@@ -0,0 +1,76 @@
+/**
+ * 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.connector;
+
+import org.apache.camel.Component;
+import org.apache.camel.Consumer;
+import org.apache.camel.DelegateEndpoint;
+import org.apache.camel.Endpoint;
+import org.apache.camel.Processor;
+import org.apache.camel.Producer;
+import org.apache.camel.api.management.ManagedAttribute;
+import org.apache.camel.api.management.ManagedResource;
+import org.apache.camel.impl.DefaultEndpoint;
+import org.apache.camel.util.ServiceHelper;
+
+@ManagedResource(description = "Managed Connector Endpoint")
+public class DefaultConnectorEndpoint extends DefaultEndpoint implements DelegateEndpoint {
+
+    private final Endpoint endpoint;
+
+    public DefaultConnectorEndpoint(String endpointUri, Component component, Endpoint endpoint) {
+        super(endpointUri, component);
+        this.endpoint = endpoint;
+    }
+
+    @Override
+    public Producer createProducer() throws Exception {
+        return endpoint.createProducer();
+    }
+
+    @Override
+    public Consumer createConsumer(Processor processor) throws Exception {
+        return endpoint.createConsumer(processor);
+    }
+
+    @Override
+    public boolean isSingleton() {
+        return true;
+    }
+
+    @Override
+    public Endpoint getEndpoint() {
+        return endpoint;
+    }
+
+    @ManagedAttribute(description = "Delegate Endpoint URI", mask = true)
+    public String getDelegateEndpointUri() {
+        return endpoint.getEndpointUri();
+    }
+
+    @Override
+    protected void doStart() throws Exception {
+        super.doStart();
+        ServiceHelper.startService(endpoint);
+    }
+
+    @Override
+    protected void doStop() throws Exception {
+        ServiceHelper.stopService(endpoint);
+        super.doStop();
+    }
+}

http://git-wip-us.apache.org/repos/asf/camel/blob/18aa245f/connectors/camel-connector/src/main/resources/META-INF/LICENSE.txt
----------------------------------------------------------------------
diff --git a/connectors/camel-connector/src/main/resources/META-INF/LICENSE.txt b/connectors/camel-connector/src/main/resources/META-INF/LICENSE.txt
new file mode 100755
index 0000000..6b0b127
--- /dev/null
+++ b/connectors/camel-connector/src/main/resources/META-INF/LICENSE.txt
@@ -0,0 +1,203 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
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+      the copyright owner that is granting the License.
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+      represent, as a whole, an original work of authorship. For the purposes
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+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
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+      on behalf of whom a Contribution has been received by Licensor and
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+   4. Redistribution. You may reproduce and distribute copies of the
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+      the terms of any separate license agreement you may have executed
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+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
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+      file or class name and description of purpose be included on the
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+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed 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
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+

http://git-wip-us.apache.org/repos/asf/camel/blob/18aa245f/connectors/camel-connector/src/main/resources/META-INF/NOTICE.txt
----------------------------------------------------------------------
diff --git a/connectors/camel-connector/src/main/resources/META-INF/NOTICE.txt b/connectors/camel-connector/src/main/resources/META-INF/NOTICE.txt
new file mode 100644
index 0000000..2e215bf
--- /dev/null
+++ b/connectors/camel-connector/src/main/resources/META-INF/NOTICE.txt
@@ -0,0 +1,11 @@
+   =========================================================================
+   ==  NOTICE file corresponding to the section 4 d of                    ==
+   ==  the Apache License, Version 2.0,                                   ==
+   ==  in this case for the Apache Camel distribution.                    ==
+   =========================================================================
+
+   This product includes software developed by
+   The Apache Software Foundation (http://www.apache.org/).
+
+   Please read the different LICENSE files present in the licenses directory of
+   this distribution.

http://git-wip-us.apache.org/repos/asf/camel/blob/18aa245f/connectors/pom.xml
----------------------------------------------------------------------
diff --git a/connectors/pom.xml b/connectors/pom.xml
new file mode 100644
index 0000000..43e285d
--- /dev/null
+++ b/connectors/pom.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  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.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+
+  <modelVersion>4.0.0</modelVersion>
+
+  <parent>
+    <groupId>org.apache.camel</groupId>
+    <artifactId>camel-parent</artifactId>
+    <version>2.19.0-SNAPSHOT</version>
+    <relativePath>../parent</relativePath>
+  </parent>
+
+  <artifactId>connectors</artifactId>
+  <name>Camel :: Connectors</name>
+  <description>Camel Connectors</description>
+  <packaging>pom</packaging>
+
+  <modules>
+    <module>camel-connector</module>
+  </modules>
+
+</project>

http://git-wip-us.apache.org/repos/asf/camel/blob/18aa245f/pom.xml
----------------------------------------------------------------------
diff --git a/pom.xml b/pom.xml
index b5b44c5..00734f4 100755
--- a/pom.xml
+++ b/pom.xml
@@ -140,6 +140,7 @@
     <module>components</module>
     <module>tooling</module>
     <module>platforms</module>
+    <module>connectors</module>
     <module>tests</module>
     <module>examples</module>
   </modules>