Initial add of APPC client libraries

Issue-ID: APPC-180
Change-Id: Ie0be2b518b90bb7f9996e9260c43fef75d1a5821
Signed-off-by: Skip Wonnell <kw5258@att.com>

7 files changed, 528 insertions, 0 deletions

diff --git a/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/api/CLI.java b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/api/CLI.java
new file mode 100644
index 000000000..61516a72d
--- /dev/null
+++ b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/api/CLI.java
@@ -0,0 +1,66 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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
+ * 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.
+ * 
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.tools.generator.api;
+
+import org.openecomp.appc.tools.generator.impl.ModelGenerator;
+
+public class CLI {
+    public static void main(String... args) throws Exception {
+        String sourceFile = args[0];
+        if(sourceFile == null)
+            throw new IllegalArgumentException("Source file is missing. Please add argument 'client <source file> <destination file> <model template>'");
+
+        String destinationFile = args[1];
+        if(destinationFile == null)
+            throw new IllegalArgumentException("Destination file name is missing. Please add argument 'client "
+                    + sourceFile
+                    + "<destination> <model template> <builder> <conf file>'");
+
+        String templateFile = args[2];
+        if(templateFile == null)
+            throw new IllegalArgumentException("template file name is missing. Please add argument 'client "
+                    + sourceFile
+                    + destinationFile
+                    + " <model template> <builder> <conf file>'");
+
+        String builderName = args[3];
+        if(builderName == null)
+            throw new IllegalArgumentException("builder FQDN is missing. Please add argument 'client "
+                    + sourceFile
+                    + destinationFile
+                    + templateFile
+                    + " <builder> <conf file>'");
+        String contextConfName = args[4];
+        if(contextConfName == null)
+            throw new IllegalArgumentException("context conf file is missing. Please add argument 'client "
+                    + sourceFile
+                    + destinationFile
+                    + templateFile
+                    + builderName
+                    + " <conf file>'");
+        ModelGenerator generator = new ModelGenerator();
+        generator.execute(sourceFile, destinationFile, templateFile, builderName, contextConfName);
+    }
+}
diff --git a/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/api/ContextBuilder.java b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/api/ContextBuilder.java
new file mode 100644
index 000000000..7e0bbe15a
--- /dev/null
+++ b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/api/ContextBuilder.java
@@ -0,0 +1,34 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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
+ * 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.
+ * 
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.tools.generator.api;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.util.Map;
+
+public interface ContextBuilder {
+
+    Map<String, Object> buildContext(String sourceFile, String contextConf) throws IOException;
+}
diff --git a/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/api/MavenPlugin.java b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/api/MavenPlugin.java
new file mode 100644
index 000000000..f031dd666
--- /dev/null
+++ b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/api/MavenPlugin.java
@@ -0,0 +1,85 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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
+ * 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.
+ * 
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.tools.generator.api;
+
+import org.openecomp.appc.tools.generator.impl.ModelGenerator;
+import org.apache.maven.plugin.AbstractMojo;
+import org.apache.maven.plugin.MojoExecutionException;
+import org.apache.maven.plugin.MojoFailureException;
+import org.apache.maven.plugins.annotations.LifecyclePhase;
+import org.apache.maven.plugins.annotations.Mojo;
+import org.apache.maven.plugins.annotations.Parameter;
+import org.apache.maven.project.MavenProject;
+
+import java.io.IOException;
+import java.nio.file.Paths;
+
+@Mojo(
+        name = "generate",
+        defaultPhase = LifecyclePhase.GENERATE_SOURCES
+)
+public class MavenPlugin extends AbstractMojo {
+
+    @Parameter(property = "templateName", required = true)
+    private String templateName;
+
+    @Parameter(property = "sourceFileName")
+    private String sourceFileName;
+
+    @Parameter(property = "outputFileName")
+    private String outputFileName;
+
+    @Parameter(property = "contextBuilderClassName", required = true)
+    private String contextBuilderClassName;
+
+    @Parameter(property = "contextConfigFileName")
+    private String contextConfigFileName;
+
+    @Parameter (property = "project")
+    private MavenProject project;
+
+    @Override
+    public void execute() throws MojoExecutionException, MojoFailureException {
+        ModelGenerator generator = new ModelGenerator();
+        try {
+            trace("\t === Called MavenPlugin on builder <" + contextBuilderClassName +">\n");
+            generator.execute(sourceFileName,outputFileName,templateName,contextBuilderClassName,contextConfigFileName);
+            String workDirectory = getWorkDirectory(outputFileName);
+            project.addCompileSourceRoot(workDirectory);
+        } catch (Exception e) {
+            e.printStackTrace();
+            throw new MojoExecutionException(e.getMessage());
+        }
+    }
+
+    private String getWorkDirectory(String outputFileName) throws IOException {
+        String workDirPath = Paths.get(outputFileName.toString()).getParent().toString();
+        return workDirPath;
+    }
+
+    private void trace(String message) {
+        getLog().info(message);
+    }
+}
diff --git a/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/extensions/JsonContextBuilderImpl.java b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/extensions/JsonContextBuilderImpl.java
new file mode 100644
index 000000000..6a3d13bf5
--- /dev/null
+++ b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/extensions/JsonContextBuilderImpl.java
@@ -0,0 +1,67 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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
+ * 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.
+ * 
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.tools.generator.extensions;
+
+import org.openecomp.appc.tools.generator.api.ContextBuilder;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Properties;
+
+public class JsonContextBuilderImpl implements ContextBuilder {
+
+    @Override
+    public Map<String, Object> buildContext(String sourceFile, String contextConf) throws IOException {
+        //read json file
+        ObjectMapper mapper = new ObjectMapper();
+        JsonNode model = mapper.readTree(new File(sourceFile));
+
+        //get context config file
+        Properties properties = new Properties();
+        ClassLoader classloader = Thread.currentThread().getContextClassLoader();
+        InputStream inputStream = classloader.getResourceAsStream(contextConf);
+        properties.load(inputStream);
+
+        //get context related properties
+        ObjectNode metadata = mapper.createObjectNode();
+        for (String key : properties.stringPropertyNames()) {
+            if (key.startsWith("ctx")) {
+                metadata.put(key.replaceFirst("ctx.", ""), properties.getProperty(key));
+            }
+        }
+
+        //create context and populate it
+        Map<String, Object> map = new HashMap<>();
+        map.put("model", model);
+        map.put("metadata", metadata);
+        return map;
+    }
+}
diff --git a/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/extensions/YangContextBuilderImpl.java b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/extensions/YangContextBuilderImpl.java
new file mode 100644
index 000000000..32846166e
--- /dev/null
+++ b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/extensions/YangContextBuilderImpl.java
@@ -0,0 +1,98 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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
+ * 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.
+ * 
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.tools.generator.extensions;
+
+import org.openecomp.appc.tools.generator.api.ContextBuilder;
+import com.google.common.base.Optional;
+
+import org.opendaylight.yangtools.yang.model.api.Module;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import org.opendaylight.yangtools.yang.model.parser.api.YangSyntaxErrorException;
+import org.opendaylight.yangtools.yang.model.repo.api.SchemaSourceException;
+import org.opendaylight.yangtools.yang.parser.repo.YangTextSchemaContextResolver;
+import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.ModuleEffectiveStatementImpl;
+
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.*;
+
+public class YangContextBuilderImpl implements ContextBuilder {
+
+    @Override
+    public Map<String, Object> buildContext(String sourceFile, String contextConf) throws FileNotFoundException {
+        InputStream source = new FileInputStream(sourceFile);
+        if (source == null) {
+            throw new FileNotFoundException("YANG file <" + sourceFile + ">not found");
+        }
+
+        YangTextSchemaContextResolver yangContextResolver = YangTextSchemaContextResolver
+                .create("yang-context-resolver");
+        try {
+            yangContextResolver.registerSource(new URL("file:///" + sourceFile));
+        } catch (SchemaSourceException | IOException | YangSyntaxErrorException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+        Optional<SchemaContext> sc = yangContextResolver.getSchemaContext();
+
+        Map<String, Object> map = new HashMap<>();
+        if (sc.isPresent()) {
+
+            Set<Module> modules = sc.get().getModules();
+            for (Module module : modules) {
+                ModuleEffectiveStatementImpl impl = (ModuleEffectiveStatementImpl) module;
+                map.put("module", module);
+            }
+
+        }
+
+        return map;
+    }
+
+    // @Override
+    // public Map<String, Object> buildContext(String sourceFile, String
+    // contextConf) throws FileNotFoundException {
+    // InputStream source = new FileInputStream(sourceFile);
+    // if (source == null) {
+    // throw new FileNotFoundException("YANG file <" + sourceFile + ">not found");
+    // }
+    //
+    // SchemaContext mSchema = parse(Collections.singletonList(source));
+    //
+    // Map<String, Object> map = new HashMap<>();
+    // map.put("module", mSchema.getModules().iterator().next());
+    // return map;
+    // }
+    //
+    // private SchemaContext parse(List<InputStream> sources) {
+    // YangParserImpl parser = new YangParserImpl();
+    // Set<Module> modules = parser.parseYangModelsFromStreams(sources);
+    // return parser.resolveSchemaContext(modules);
+    // }
+
+}
diff --git a/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/impl/CodeGenWriter.java b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/impl/CodeGenWriter.java
new file mode 100644
index 000000000..15498c83d
--- /dev/null
+++ b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/impl/CodeGenWriter.java
@@ -0,0 +1,107 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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
+ * 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.
+ * 
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.tools.generator.impl;
+
+import java.io.*;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+class CodeGenWriter extends Writer {
+
+    private FileWriter fileWriter;
+    private boolean delimiterBeginFound;
+    private Path basePath;
+    private String outPath;
+    private boolean deleteFile;
+    private static final String DELIMITER = "__";
+    private Pattern pattern;
+
+
+    CodeGenWriter(String destination) throws IOException {
+        super(destination);
+        fileWriter = new FileWriter(destination);
+        basePath = Paths.get(destination);
+        delimiterBeginFound = false;
+        outPath = "";
+        deleteFile = false;
+        pattern = Pattern.compile(DELIMITER);
+    }
+
+    @Override
+    public void write(char[] cbuf, int off, int len) throws IOException {
+        String bufferStr = new String(cbuf).substring(off, off + len);
+        Matcher matcher = pattern.matcher(bufferStr);
+
+        boolean isMatch = matcher.find();
+        if (!isMatch) {
+            if (!delimiterBeginFound) {
+                fileWriter.write(cbuf, off, len);
+            }
+            else {
+                outPath += bufferStr;
+            }
+        }
+        else {
+            if (!delimiterBeginFound) {
+                delimiterBeginFound = true;
+            }
+            else {
+                deleteFile = true;
+                Path fileName = getNewFileName();
+                Files.createDirectories(fileName.getParent());
+                openNewFileWriter(fileName.toString());
+                delimiterBeginFound = false;
+                outPath = "";
+            }
+        }
+    }
+
+    @Override
+    public void flush() throws IOException {
+        fileWriter.flush();
+    }
+
+    @Override
+    public void close() throws IOException {
+        fileWriter.close();
+        if (deleteFile) {
+            Files.deleteIfExists(basePath);
+        }
+    }
+
+    private Path getNewFileName() {
+        String newRelativePath = this.outPath.replace(".", File.separator);
+        return Paths.get(basePath.getParent().toString(), newRelativePath + ".java");
+    }
+
+    private void openNewFileWriter(String fileName) throws IOException {
+        flush();
+        close();
+        fileWriter = new FileWriter(fileName);
+    }
+}
diff --git a/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/impl/ModelGenerator.java b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/impl/ModelGenerator.java
new file mode 100644
index 000000000..bdaa3a29d
--- /dev/null
+++ b/appc-client/code-generator/src/main/java/org/openecomp/appc/tools/generator/impl/ModelGenerator.java
@@ -0,0 +1,71 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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
+ * 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.
+ * 
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.appc.tools.generator.impl;
+
+import org.openecomp.appc.tools.generator.api.ContextBuilder;
+import freemarker.template.Configuration;
+import freemarker.template.Template;
+import freemarker.template.TemplateException;
+
+import java.io.IOException;
+import java.io.Writer;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Map;
+
+public class ModelGenerator {
+
+    public void execute(String sourceFile, String destinationFile, String templateFile, String builderName, String contextConfName) throws IOException, ReflectiveOperationException {
+
+        ContextBuilder contextBuilder = (ContextBuilder) Class.forName(builderName).newInstance();
+        Map<String, Object> context = contextBuilder.buildContext(sourceFile, contextConfName);
+
+        Path destinationPath = Paths.get(destinationFile);
+        if (!Files.isDirectory(destinationPath))
+            Files.createDirectories(destinationPath.getParent());
+        else {
+            Files.createDirectories(destinationPath);
+        }
+
+        this.generate(context, templateFile, destinationFile);
+        System.out.println("\tFile <" + destinationFile + "> prepared successfully");
+    }
+
+    private void generate(Map<String, Object> context, String templateFile, String destinationFile) throws ReflectiveOperationException {
+        try {
+            Configuration cfg = new Configuration(Configuration.VERSION_2_3_23);
+            cfg.setClassForTemplateLoading(ModelGenerator.class, "/");
+            Template template = cfg.getTemplate(templateFile);
+
+            Writer out = new CodeGenWriter(destinationFile);
+            template.process(context, out);
+            out.close();
+        } catch (IOException | TemplateException e) {
+            throw new RuntimeException("Failed to generate file from template <" + templateFile + ">", e);
+        }
+    }
+
+}