ONOS Swagger Plugin

just does swagger now
to build the plugin, you need to download to following:
https://github.com/bocon13/buck/releases/download/v2016.07.29.01-wip/buck.jar

put the buck.jar in tools/build/buck-plugin/lib

Change-Id: Id1b833dd013fbc5581f8e884e755920829c4a17e

 [buildfile]
   includes = //buck-tools/default.defs
 
+[plugins]
+  directory = //bucklets/plugins
+
 [java]
   source_level = 8
   target_level = 8

@@ -17,6 +17,7 @@ localDB.*
 .buckd
 buck-out
 .buckconfig.local
+.buckjavaargs*
 
 core/store/trivial/data/
 core/store/apps

@@ -16,4 +16,9 @@ osgi_jar_with_tests (
     deps = COMPILE_DEPS,
     test_deps = TEST_DEPS,
     web_context = '/onos/dhcp',
+    api_title = 'DHCP Server App',
+    api_version = '1.0',
+    api_description = 'REST API for DHCP Server App',
+    api_package = 'org.onosproject.dhcp.rest',
+    debug = False
 )

@@ -107,6 +107,10 @@ def osgi_jar(
     package_name_root = 'org.onosproject',
     include_resources = NONE,
     web_context = NONE,
+    api_title = NONE,
+    api_version = NONE,
+    api_package = NONE,
+    api_description = NONE,
     resources = NONE,
     resources_root = None,
     **kwargs
@@ -128,18 +132,27 @@ def osgi_jar(
   if resources and not resources_root:
       resources_root = RESOURCES_ROOT
 
+  if api_title != NONE:
+      r = 'WEB-INF/classes/apidoc/swagger.json=bin/swagger.json'
+      include_resources = include_resources + ',' + r if include_resources != NONE else r
+
   bare_jar_name = name + '-jar'
   osgi_jar_name = name + '-osgi'
   mvn_coords = group_id + ':' + name + ':' + version
 
 
-  java_library(
+  onos_jar(
       name = bare_jar_name,
       srcs = srcs,
       deps = deps,
       visibility = [], #intentially, not visible
       resources = resources,
       resources_root = resources_root,
+      web_context = web_context,
+      api_title = api_title,
+      api_version = api_version,
+      api_package = api_package,
+      api_description = api_description,
       **kwargs
   )
 
@@ -167,6 +180,7 @@ def osgi_jar(
     bash = stage_jar + DEBUG_ARG + ' ' + wrap_jar
     print bash
 
+  # FIXME: make sure that /swagger.json gets filtered
   genrule(
     name = osgi_jar_name,
     bash = bash,

+remote_jar (
+  name = 'buck-api',
+  out = 'buck.jar',
+  url = 'https://github.com/bocon13/buck/releases/download/v2016.07.29.01-wip/buck.jar',
+  sha1 = 'f89324cb869b74fdcd4db9972233065a93d890a2',
+  visibility = [],
+)
+
+COMPILE = [
+  '//lib:qdox',
+  #'//lib:jackson-core',
+  #'//lib:jackson-databind',
+  #'//lib:jackson-annotations',
+]
+
+RUNTIME = [
+]
+
+java_library(
+  name = 'lib',
+  srcs = glob(['src/main/java/**/*.java']),
+  resources = glob(['src/main/resources/**/*']),
+  resources_root = 'src/main/resources',
+  deps = COMPILE,
+  provided_deps = [':buck-api'],
+  visibility = [],
+)
+
+java_binary(
+  name = 'onosjar',
+  deps = [':lib'],
+  visibility = ['PUBLIC'],
+)
\ No newline at end of file

+#!/bin/bash
+
+PLUGINS=$ONOS_ROOT/bucklets/plugins
+
+# Build it first
+pluginJar=$(NO_BUCKD=1 buck build //tools/build/buck-plugin:onosjar --no-cache --show-output | grep onosjar.jar | cut -d\  -f2)
+
+# Then install it
+mkdir -p $PLUGINS
+cp $ONOS_ROOT/$pluginJar $PLUGINS
+
+ls -l $PLUGINS

+#!/bin/bash
+
+NO_BUCKD=1 buck build //apps/dhcp/app:onos-apps-dhcp-app --no-cache --show-output

+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.
+ */
+package org.onosproject.onosjar;
+
+import com.facebook.buck.jvm.java.CompileToJarStepFactory;
+import com.facebook.buck.jvm.java.DefaultJavaLibrary;
+import com.facebook.buck.model.BuildTarget;
+import com.facebook.buck.rules.AddToRuleKey;
+import com.facebook.buck.rules.BuildRule;
+import com.facebook.buck.rules.BuildRuleParams;
+import com.facebook.buck.rules.SourcePath;
+import com.facebook.buck.rules.SourcePathResolver;
+import com.google.common.base.Optional;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.ImmutableSortedSet;
+
+import java.nio.file.Path;
+import java.util.Set;
+import java.util.regex.Pattern;
+
+/**
+ * Implementation of a build rule that generates a onosjar.json file for a set
+ * of Java sources.
+ */
+public class OnosJar extends DefaultJavaLibrary {
+
+    @AddToRuleKey
+    final Optional<String> webContext;
+
+    @AddToRuleKey
+    final Optional<String> apiTitle;
+
+    @AddToRuleKey
+    final Optional<String> apiVersion;
+
+    @AddToRuleKey
+    final Optional<String> apiPackage;
+
+    @AddToRuleKey
+    final Optional<String> apiDescription;
+
+    public OnosJar(BuildRuleParams params,
+                   SourcePathResolver resolver,
+                   Set<? extends SourcePath> srcs,
+                   Set<? extends SourcePath> resources,
+                   Optional<Path> generatedSourceFolder,
+                   Optional<SourcePath> proguardConfig,
+                   ImmutableList<String> postprocessClassesCommands,
+                   ImmutableSortedSet<BuildRule> exportedDeps,
+                   ImmutableSortedSet<BuildRule> providedDeps,
+                   SourcePath abiJar, boolean trackClassUsage,
+                   ImmutableSet<Path> additionalClasspathEntries,
+                   CompileToJarStepFactory compileStepFactory,
+                   Optional<Path> resourcesRoot,
+                   Optional<String> mavenCoords,
+                   ImmutableSortedSet<BuildTarget> tests,
+                   ImmutableSet<Pattern> classesToRemoveFromJar,
+                   Optional<String> webContext,
+                   Optional<String> apiTitle,
+                   Optional<String> apiVersion,
+                   Optional<String> apiPackage,
+                   Optional<String> apiDescription) {
+        super(params, resolver, srcs, resources, generatedSourceFolder,
+              proguardConfig, postprocessClassesCommands, exportedDeps,
+              providedDeps, abiJar, trackClassUsage, additionalClasspathEntries,
+              compileStepFactory, resourcesRoot, mavenCoords, tests,
+              classesToRemoveFromJar);
+        this.webContext = webContext;
+        this.apiTitle = apiTitle;
+        this.apiVersion = apiVersion;
+        this.apiPackage = apiPackage;
+        this.apiDescription = apiDescription;
+    }
+}

+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.
+ */
+package org.onosproject.onosjar;
+
+import com.facebook.buck.cli.BuckConfig;
+import com.facebook.buck.jvm.java.CalculateAbi;
+import com.facebook.buck.jvm.java.DefaultJavaLibrary;
+import com.facebook.buck.jvm.java.JavaBuckConfig;
+import com.facebook.buck.jvm.java.JavaLibraryDescription;
+import com.facebook.buck.jvm.java.JavaOptions;
+import com.facebook.buck.jvm.java.JavacOptions;
+import com.facebook.buck.jvm.java.JavacOptionsAmender;
+import com.facebook.buck.jvm.java.JavacOptionsFactory;
+import com.facebook.buck.model.BuildTarget;
+import com.facebook.buck.model.Flavor;
+import com.facebook.buck.parser.NoSuchBuildTargetException;
+import com.facebook.buck.rules.BuildRule;
+import com.facebook.buck.rules.BuildRuleParams;
+import com.facebook.buck.rules.BuildRuleResolver;
+import com.facebook.buck.rules.BuildRuleType;
+import com.facebook.buck.rules.BuildRules;
+import com.facebook.buck.rules.BuildTargetSourcePath;
+import com.facebook.buck.rules.Description;
+import com.facebook.buck.rules.SourcePathResolver;
+import com.facebook.buck.rules.SourcePaths;
+import com.facebook.buck.rules.TargetGraph;
+import com.google.common.base.Optional;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.ImmutableSortedSet;
+import com.google.common.collect.Iterables;
+
+import java.nio.file.Path;
+
+import static com.facebook.buck.jvm.common.ResourceValidator.validateResources;
+
+/**
+ * Description for the onos_jar rules.
+ *
+ * Currently, this only does Swagger generation.
+ */
+public class OnosJarDescription implements Description<OnosJarDescription.Arg> {
+    public static final BuildRuleType TYPE = BuildRuleType.of("onos_jar");
+    private final JavacOptions defaultJavacOptions;
+    private final JavaOptions defaultJavaOptions;
+
+    public OnosJarDescription(BuckConfig config) {
+        JavaBuckConfig javaConfig = new JavaBuckConfig(config);
+        defaultJavacOptions = javaConfig.getDefaultJavacOptions();
+        defaultJavaOptions = javaConfig.getDefaultJavaOptions();
+    }
+
+    @Override
+    public BuildRuleType getBuildRuleType() {
+        return TYPE;
+    }
+
+    @Override
+    public Arg createUnpopulatedConstructorArg() {
+        return new Arg();
+    }
+
+    @Override
+    public <A extends Arg> BuildRule createBuildRule(TargetGraph targetGraph,
+                                                     BuildRuleParams params,
+                                                     BuildRuleResolver resolver,
+                                                     A args)
+            throws NoSuchBuildTargetException {
+
+
+        SourcePathResolver pathResolver = new SourcePathResolver(resolver);
+        BuildTarget target = params.getBuildTarget();
+
+        // We know that the flavour we're being asked to create is valid, since the check is done when
+        // creating the action graph from the target graph.
+
+        ImmutableSortedSet<Flavor> flavors = target.getFlavors();
+        BuildRuleParams paramsWithMavenFlavor = null;
+
+        JavacOptions javacOptions = JavacOptionsFactory.create(
+                defaultJavacOptions,
+                params,
+                resolver,
+                pathResolver,
+                args
+        );
+
+        BuildTarget abiJarTarget = params.getBuildTarget().withAppendedFlavors(CalculateAbi.FLAVOR);
+
+        ImmutableSortedSet<BuildRule> exportedDeps = resolver.getAllRules(args.exportedDeps.get());
+
+        DefaultJavaLibrary defaultJavaLibrary =
+                resolver.addToIndex(
+                        new OnosJar(
+                                params.appendExtraDeps(
+                                        Iterables.concat(
+                                                BuildRules.getExportedRules(
+                                                        Iterables.concat(
+                                                                params.getDeclaredDeps().get(),
+                                                                exportedDeps,
+                                                                resolver.getAllRules(args.providedDeps.get()))),
+                                                pathResolver.filterBuildRuleInputs(
+                                                        javacOptions.getInputs(pathResolver)))),
+                                pathResolver,
+                                args.srcs.get(),
+                                validateResources(
+                                        pathResolver,
+                                        params.getProjectFilesystem(),
+                                        args.resources.get()),
+                                javacOptions.getGeneratedSourceFolderName(),
+                                args.proguardConfig.transform(
+                                        SourcePaths.toSourcePath(params.getProjectFilesystem())),
+                                args.postprocessClassesCommands.get(), // FIXME this should be forbidden
+                                exportedDeps,
+                                resolver.getAllRules(args.providedDeps.get()),
+                                new BuildTargetSourcePath(abiJarTarget),
+                                javacOptions.trackClassUsage(),
+                                /* additionalClasspathEntries */ ImmutableSet.<Path>of(),
+                                new OnosJarStepFactory(javacOptions, JavacOptionsAmender.IDENTITY,
+                                                       args.webContext, args.apiTitle, args.apiVersion,
+                                                       args.apiPackage, args.apiDescription, args.resources),
+                                args.resourcesRoot,
+                                args.mavenCoords,
+                                args.tests.get(),
+                                javacOptions.getClassesToRemoveFromJar(),
+                                args.webContext,
+                                args.apiTitle,
+                                args.apiVersion,
+                                args.apiPackage,
+                                args.apiDescription));
+
+        resolver.addToIndex(
+                CalculateAbi.of(
+                        abiJarTarget,
+                        pathResolver,
+                        params,
+                        new BuildTargetSourcePath(defaultJavaLibrary.getBuildTarget())));
+
+        return defaultJavaLibrary;
+    }
+
+
+    public static class Arg extends JavaLibraryDescription.Arg {
+        public Optional<String> webContext;
+        public Optional<String> apiTitle;
+        public Optional<String> apiVersion;
+        public Optional<String> apiPackage;
+        public Optional<String> apiDescription;
+    }
+}
\ No newline at end of file

+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.
+ */
+package org.onosproject.onosjar;
+
+import com.facebook.buck.io.ProjectFilesystem;
+import com.facebook.buck.jvm.core.SuggestBuildRules;
+import com.facebook.buck.jvm.java.ClassUsageFileWriter;
+import com.facebook.buck.jvm.java.JarDirectoryStep;
+import com.facebook.buck.jvm.java.JavacOptions;
+import com.facebook.buck.jvm.java.JavacOptionsAmender;
+import com.facebook.buck.jvm.java.JavacToJarStepFactory;
+import com.facebook.buck.model.BuildTarget;
+import com.facebook.buck.rules.BuildContext;
+import com.facebook.buck.rules.BuildableContext;
+import com.facebook.buck.rules.SourcePath;
+import com.facebook.buck.rules.SourcePathResolver;
+import com.facebook.buck.step.Step;
+import com.google.common.base.Optional;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.ImmutableSortedSet;
+
+import java.nio.file.Path;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+
+/**
+ * Creates the list of build steps for the onos_jar rules.
+ */
+public class OnosJarStepFactory extends JavacToJarStepFactory {
+
+    private static final String DEFINITIONS = "/definitions/";
+    private final String webContext;
+    private final String apiTitle;
+    private final String apiVersion;
+    private final String apiPackage;
+    private final String apiDescription;
+    private final Optional<ImmutableSortedSet<SourcePath>> resources;
+
+    public OnosJarStepFactory(JavacOptions javacOptions,
+                              JavacOptionsAmender amender,
+                              Optional<String> webContext,
+                              Optional<String> apiTitle,
+                              Optional<String> apiVersion,
+                              Optional<String> apiPackage,
+                              Optional<String> apiDescription,
+                              Optional<ImmutableSortedSet<SourcePath>> resources) {
+        super(javacOptions, amender);
+        this.webContext = processParameter(webContext);
+        this.apiTitle = processParameter(apiTitle);
+        this.apiVersion = processParameter(apiVersion);
+        this.apiPackage = processParameter(apiPackage);
+        this.apiDescription = processParameter(apiDescription);
+        this.resources = resources;
+    }
+
+    private String processParameter(Optional<String> p) {
+        return !p.isPresent() || p.get().equals("NONE") ? null : p.get();
+    }
+
+    @Override
+    public void createCompileToJarStep(BuildContext context,
+                                       ImmutableSortedSet<Path> sourceFilePaths,
+                                       BuildTarget invokingRule,
+                                       SourcePathResolver resolver,
+                                       ProjectFilesystem filesystem,
+                                       ImmutableSortedSet<Path> declaredClasspathEntries,
+                                       Path outputDirectory,
+                                       Optional<Path> workingDirectory,
+                                       Path pathToSrcsList,
+                                       Optional<SuggestBuildRules> suggestBuildRules,
+                                       ImmutableList<String> postprocessClassesCommands,
+                                       ImmutableSortedSet<Path> entriesToJar,
+                                       Optional<String> mainClass,
+                                       Optional<Path> manifestFile,
+                                       Path outputJar,
+                                       ClassUsageFileWriter usedClassesFileWriter,
+                                       ImmutableList.Builder<Step> steps,
+                                       BuildableContext buildableContext,
+                                       ImmutableSet<Pattern> classesToRemoveFromJar) {
+
+        ImmutableSet.Builder<Path> sourceFilePathBuilder = ImmutableSet.builder();
+        sourceFilePathBuilder.addAll(sourceFilePaths);
+
+        ImmutableSet.Builder<Pattern> blacklistBuilder = ImmutableSet.builder();
+        blacklistBuilder.addAll(classesToRemoveFromJar);
+
+        // precompilation steps
+        //   - generate sources
+        //     add all generated sources ot pathToSrcsList
+        if (webContext != null && apiTitle != null && resources.isPresent()) {
+            ImmutableSortedSet<Path> resourceFilePaths = findSwaggerModelDefs(resolver, resources.get());
+            blacklistBuilder.addAll(resourceFilePaths.stream()
+                                            .map(rp -> Pattern.compile(rp.getFileName().toString(), Pattern.LITERAL))
+                                            .collect(Collectors.toSet()));
+            Path genSourcesOutput = workingDirectory.get();
+
+            SwaggerStep swaggerStep = new SwaggerStep(filesystem, sourceFilePaths, resourceFilePaths,
+                                                      genSourcesOutput, outputDirectory,
+                                                      webContext, apiTitle, apiVersion,
+                                                      apiPackage, apiDescription);
+            sourceFilePathBuilder.add(swaggerStep.apiRegistratorPath());
+            steps.add(swaggerStep);
+        }
+
+        createCompileStep(context,
+                          ImmutableSortedSet.copyOf(sourceFilePathBuilder.build()),
+                          invokingRule,
+                          resolver,
+                          filesystem,
+                          declaredClasspathEntries,
+                          outputDirectory,
+                          workingDirectory,
+                          pathToSrcsList,
+                          suggestBuildRules,
+                          usedClassesFileWriter,
+                          steps,
+                          buildableContext);
+
+        // post compilation steps
+
+        // FIXME BOC: add mechanism to inject new Steps
+        //context.additionalStepFactory(JavaStep.class);
+
+        // build the jar
+        steps.add(new JarDirectoryStep(filesystem,
+                                       outputJar,
+                                       ImmutableSortedSet.of(outputDirectory),
+                                       mainClass.orNull(),
+                                       manifestFile.orNull(),
+                                       true,
+                                       blacklistBuilder.build()));
+    }
+
+    private ImmutableSortedSet<Path> findSwaggerModelDefs(SourcePathResolver resolver,
+                                                          ImmutableSortedSet<SourcePath> resourcePaths) {
+        if (resourcePaths == null) {
+            return ImmutableSortedSet.of();
+        }
+        return ImmutableSortedSet.copyOf(resourcePaths.stream()
+                                                 .filter(sp -> sp.toString().contains(DEFINITIONS))
+                                                 .map(resolver::getRelativePath)
+                                                 .collect(Collectors.toList()));
+    }
+}

+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * 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.
+ */
+
+package org.onosproject.onosjar;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.io.ByteStreams;
+import com.google.common.io.Files;
+import com.thoughtworks.qdox.JavaProjectBuilder;
+import com.thoughtworks.qdox.model.DocletTag;
+import com.thoughtworks.qdox.model.JavaAnnotation;
+import com.thoughtworks.qdox.model.JavaClass;
+import com.thoughtworks.qdox.model.JavaMethod;
+import com.thoughtworks.qdox.model.JavaParameter;
+import com.thoughtworks.qdox.model.JavaType;
+
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+
+import static com.google.common.base.Strings.isNullOrEmpty;
+
+/**
+ * Generates Swagger JSON artifacts from the Java source files.
+ */
+public class SwaggerGenerator {
+
+    private final ObjectMapper mapper = new ObjectMapper();
+
+    private static final String JSON_FILE = "swagger.json";
+    private static final String GEN_SRC = "generated-sources";
+    private static final String REG_SRC = "/registrator.javat";
+
+    private static final String PATH = "javax.ws.rs.Path";
+    private static final String PATH_PARAM = "javax.ws.rs.PathParam";
+    private static final String QUERY_PARAM = "javax.ws.rs.QueryParam";
+    private static final String POST = "javax.ws.rs.POST";
+    private static final String GET = "javax.ws.rs.GET";
+    private static final String PUT = "javax.ws.rs.PUT";
+    private static final String DELETE = "javax.ws.rs.DELETE";
+    private static final String PRODUCES = "javax.ws.rs.Produces";
+    private static final String CONSUMES = "javax.ws.rs.Consumes";
+    private static final String JSON = "MediaType.APPLICATION_JSON";
+    private static final String OCTET_STREAM = "MediaType.APPLICATION_OCTET_STREAM";
+
+    private final List<File> srcs;
+    private final List<File> resources;
+    private final File srcDirectory;
+    private final File resourceDirectory;
+    private final File genSrcOutputDirectory;
+    private final File genResourcesOutputDirectory;
+    private final String webContext;
+    private final String apiTitle;
+    private final String apiVersion;
+    private final String apiPackage;
+    private final String apiDescription;
+
+    public SwaggerGenerator(List<File> srcs, List<File> resources,
+                            File srcDirectory, File resourceDirectory,
+                            File genSrcOutputDirectory, File genResourcesOutputDirectory,
+                            String webContext, String apiTitle, String apiVersion,
+                            String apiPackage, String apiDescription) {
+        this.srcs = srcs;
+        this.resources = resources;
+        this.srcDirectory = srcDirectory;
+        this.resourceDirectory = resourceDirectory;
+        this.genSrcOutputDirectory = genSrcOutputDirectory;
+        this.genResourcesOutputDirectory = genResourcesOutputDirectory;
+        this.webContext = webContext;
+
+        this.apiTitle = apiTitle;
+        this.apiVersion = apiVersion;
+        this.apiPackage = apiPackage;
+        this.apiDescription = apiDescription;
+    }
+
+    public void execute() {
+        try {
+            JavaProjectBuilder builder = new JavaProjectBuilder();
+            if (srcDirectory != null) {
+                builder.addSourceTree(new File(srcDirectory, "src/main/java"));
+            }
+            if (srcs != null) {
+                srcs.forEach(src -> {
+                    try {
+                        builder.addSource(src);
+                    } catch (IOException e) {
+                        throw new RuntimeException(e);
+                    }
+                });
+            }
+
+            ObjectNode root = initializeRoot(webContext, apiTitle, apiVersion, apiDescription);
+            ArrayNode tags = mapper.createArrayNode();
+            ObjectNode paths = mapper.createObjectNode();
+            ObjectNode definitions = mapper.createObjectNode();
+
+            root.set("tags", tags);
+            root.set("paths", paths);
+            root.set("definitions", definitions);
+
+            // TODO: Process resources to allow lookup of files by name
+
+            builder.getClasses().forEach(jc -> processClass(jc, paths, tags, definitions, srcDirectory));
+
+            if (paths.size() > 0) {
+                genCatalog(genResourcesOutputDirectory, root);
+                if (!isNullOrEmpty(apiPackage)) {
+                    genRegistrator(genSrcOutputDirectory, webContext, apiTitle, apiVersion,
+                                   apiPackage, apiDescription);
+                }
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+            throw new RuntimeException("Unable to generate ONOS REST API documentation", e);
+        }
+    }
+
+    // initializes top level root with Swagger required specifications
+    private ObjectNode initializeRoot(String webContext, String apiTitle,
+                                      String apiVersion, String apiDescription) {
+        ObjectNode root = mapper.createObjectNode();
+        root.put("swagger", "2.0");
+        ObjectNode info = mapper.createObjectNode();
+        root.set("info", info);
+
+        root.put("basePath", webContext);
+        info.put("version", apiVersion);
+        info.put("title", apiTitle);
+        info.put("description", apiDescription);
+
+        ArrayNode produces = mapper.createArrayNode();
+        produces.add("application/json");
+        root.set("produces", produces);
+
+        ArrayNode consumes = mapper.createArrayNode();
+        consumes.add("application/json");
+        root.set("consumes", consumes);
+
+        return root;
+    }
+
+    // Checks whether javaClass has a path tag associated with it and if it does
+    // processes its methods and creates a tag for the class on the root
+    void processClass(JavaClass javaClass, ObjectNode paths, ArrayNode tags,
+                      ObjectNode definitions, File srcDirectory) {
+        // If the class does not have a Path tag then ignore it
+        JavaAnnotation annotation = getPathAnnotation(javaClass);
+        if (annotation == null) {
+            return;
+        }
+
+        String path = getPath(annotation);
+        if (path == null) {
+            return;
+        }
+
+        String resourcePath = "/" + path;
+        String tagPath = path.isEmpty() ? "/" : path;
+
+        // Create tag node for this class.
+        ObjectNode tagObject = mapper.createObjectNode();
+        tagObject.put("name", tagPath);
+        if (javaClass.getComment() != null) {
+            tagObject.put("description", shortText(javaClass.getComment()));
+        }
+        tags.add(tagObject);
+
+        // Create an array node add to all methods from this class.
+        ArrayNode tagArray = mapper.createArrayNode();
+        tagArray.add(tagPath);
+
+        processAllMethods(javaClass, resourcePath, paths, tagArray, definitions, srcDirectory);
+    }
+
+    private JavaAnnotation getPathAnnotation(JavaClass javaClass) {
+        Optional<JavaAnnotation> optional = javaClass.getAnnotations()
+                .stream().filter(a -> a.getType().getName().equals(PATH)).findAny();
+        return optional.orElse(null);
+    }
+
+    // Checks whether a class's methods are REST methods and then places all the
+    // methods under a specific path into the paths node
+    private void processAllMethods(JavaClass javaClass, String resourcePath,
+                                   ObjectNode paths, ArrayNode tagArray, ObjectNode definitions,
+                                   File srcDirectory) {
+        // map of the path to its methods represented by an ObjectNode
+        Map<String, ObjectNode> pathMap = new HashMap<>();
+
+        javaClass.getMethods().forEach(javaMethod -> {
+            javaMethod.getAnnotations().forEach(annotation -> {
+                String name = annotation.getType().getName();
+                if (name.equals(POST) || name.equals(GET) || name.equals(DELETE) || name.equals(PUT)) {
+                    // substring(12) removes "javax.ws.rs."
+                    String method = annotation.getType().toString().substring(12).toLowerCase();
+                    processRestMethod(javaMethod, method, pathMap, resourcePath, tagArray, definitions, srcDirectory);
+                }
+            });
+        });
+
+        // for each path add its methods to the path node
+        for (Map.Entry<String, ObjectNode> entry : pathMap.entrySet()) {
+            paths.set(entry.getKey(), entry.getValue());
+        }
+
+
+    }
+
+    private void processRestMethod(JavaMethod javaMethod, String method,
+                                   Map<String, ObjectNode> pathMap,
+                                   String resourcePath, ArrayNode tagArray,
+                                   ObjectNode definitions, File srcDirectory) {
+        String fullPath = resourcePath, consumes = "", produces = "",
+                comment = javaMethod.getComment();
+        DocletTag tag = javaMethod.getTagByName("onos.rsModel");
+        for (JavaAnnotation annotation : javaMethod.getAnnotations()) {
+            String name = annotation.getType().getName();
+            if (name.equals(PATH)) {
+                fullPath = resourcePath + "/" + getPath(annotation);
+                fullPath = fullPath.replaceFirst("^//", "/");
+            }
+            if (name.equals(CONSUMES)) {
+                consumes = getIOType(annotation);
+            }
+            if (name.equals(PRODUCES)) {
+                produces = getIOType(annotation);
+            }
+        }
+        ObjectNode methodNode = mapper.createObjectNode();
+        methodNode.set("tags", tagArray);
+
+        addSummaryDescriptions(methodNode, comment);
+        addJsonSchemaDefinition(srcDirectory, definitions, tag);
+
+        processParameters(javaMethod, methodNode, method, tag);
+
+        processConsumesProduces(methodNode, "consumes", consumes);
+        processConsumesProduces(methodNode, "produces", produces);
+        if (tag == null || ((method.toLowerCase().equals("post") || method.toLowerCase().equals("put"))
+                && !(tag.getParameters().size() > 1))) {
+            addResponses(methodNode, tag, false);
+        } else {
+            addResponses(methodNode, tag, true);
+        }
+
+        ObjectNode operations = pathMap.get(fullPath);
+        if (operations == null) {
+            operations = mapper.createObjectNode();
+            operations.set(method, methodNode);
+            pathMap.put(fullPath, operations);
+        } else {
+            operations.set(method, methodNode);
+        }
+    }
+
+    private void addJsonSchemaDefinition(File srcDirectory, ObjectNode definitions, DocletTag tag) {
+        final File definitionsDirectory;
+        if (resourceDirectory != null) {
+            definitionsDirectory = new File(resourceDirectory, "definitions");
+        } else if (srcDirectory != null) {
+            definitionsDirectory = new File(srcDirectory + "/src/main/resources/definitions");
+        } else {
+            definitionsDirectory = null;
+        }
+        if (tag != null) {
+            tag.getParameters().forEach(param -> {
+                try {
+                    File config;
+                    if (definitionsDirectory != null) {
+                        config = new File(definitionsDirectory.getAbsolutePath() + "/" + param + ".json");
+                    } else {
+                        config = resources.stream().filter(f -> f.getName().equals(param + ".json")).findFirst().orElse(null);
+                    }
+                    definitions.set(param, mapper.readTree(config));
+                } catch (IOException e) {
+                    throw new RuntimeException(String.format("Could not process %s in %s@%s: %s",
+                                                             tag.getName(), tag.getContext(), tag.getLineNumber(),
+                                                             e.getMessage()), e);
+                }
+            });
+        }
+    }
+
+    private void processConsumesProduces(ObjectNode methodNode, String type, String io) {
+        if (!io.equals("")) {
+            ArrayNode array = mapper.createArrayNode();
+            methodNode.set(type, array);
+            array.add(io);
+        }
+    }
+
+    private void addSummaryDescriptions(ObjectNode methodNode, String comment) {
+        String summary = "", description;
+        if (comment != null) {
+            if (comment.contains(".")) {
+                int periodIndex = comment.indexOf(".");
+                summary = comment.substring(0, periodIndex);
+                description = comment.length() > periodIndex + 1 ?
+                        comment.substring(periodIndex + 1).trim() : "";
+            } else {
+                description = comment;
+            }
+            methodNode.put("summary", summary);
+            methodNode.put("description", description);
+        }
+    }
+
+    // Temporary solution to add responses to a method
+    private void addResponses(ObjectNode methodNode, DocletTag tag, boolean responseJson) {
+        ObjectNode responses = mapper.createObjectNode();
+        methodNode.set("responses", responses);
+
+        ObjectNode success = mapper.createObjectNode();
+        success.put("description", "successful operation");
+        responses.set("200", success);
+        if (tag != null && responseJson) {
+            ObjectNode schema = mapper.createObjectNode();
+            tag.getParameters().stream().forEach(
+                    param -> schema.put("$ref", "#/definitions/" + param));
+            success.set("schema", schema);
+        }
+
+        ObjectNode defaultObj = mapper.createObjectNode();
+        defaultObj.put("description", "Unexpected error");
+        responses.set("default", defaultObj);
+    }
+
+    // Checks if the annotations has a value of JSON and returns the string
+    // that Swagger requires
+    private String getIOType(JavaAnnotation annotation) {
+        if (annotation.getNamedParameter("value").toString().equals(JSON)) {
+            return "application/json";
+        } else if (annotation.getNamedParameter("value").toString().equals(OCTET_STREAM)) {
+            return "application/octet_stream";
+        }
+        return "";
+    }
+
+    // If the annotation has a Path tag, returns the value with leading and
+    // trailing double quotes and slash removed.
+    private String getPath(JavaAnnotation annotation) {
+        String path = annotation.getNamedParameter("value").toString();
+        return path == null ? null : path.replaceAll("(^[\\\"/]*|[/\\\"]*$)", "");
+    }
+
+    // Processes parameters of javaMethod and enters the proper key-values into the methodNode
+    private void processParameters(JavaMethod javaMethod, ObjectNode methodNode, String method, DocletTag tag) {
+        ArrayNode parameters = mapper.createArrayNode();
+        methodNode.set("parameters", parameters);
+        boolean required = true;
+
+        for (JavaParameter javaParameter : javaMethod.getParameters()) {
+            ObjectNode individualParameterNode = mapper.createObjectNode();
+            Optional<JavaAnnotation> optional = javaParameter.getAnnotations().stream().filter(
+                    annotation -> annotation.getType().getName().equals(PATH_PARAM) ||
+                            annotation.getType().getName().equals(QUERY_PARAM)).findAny();
+            JavaAnnotation pathType = optional.orElse(null);
+
+            String annotationName = javaParameter.getName();
+
+
+            if (pathType != null) { //the parameter is a path or query parameter
+                individualParameterNode.put("name",
+                                            pathType.getNamedParameter("value")
+                                                    .toString().replace("\"", ""));
+                if (pathType.getType().getName().equals(PATH_PARAM)) {
+                    individualParameterNode.put("in", "path");
+                } else if (pathType.getType().getName().equals(QUERY_PARAM)) {
+                    individualParameterNode.put("in", "query");
+                }
+                individualParameterNode.put("type", getType(javaParameter.getType()));
+            } else { // the parameter is a body parameter
+                individualParameterNode.put("name", annotationName);
+                individualParameterNode.put("in", "body");
+
+                // Adds the reference to the Json model for the input
+                // that goes in the post or put operation
+                if (tag != null && (method.toLowerCase().equals("post") ||
+                        method.toLowerCase().equals("put"))) {
+                    ObjectNode schema = mapper.createObjectNode();
+                    tag.getParameters().stream().forEach(param -> {
+                        schema.put("$ref", "#/definitions/" + param);
+                    });
+                    individualParameterNode.set("schema", schema);
+                }
+            }
+            for (DocletTag p : javaMethod.getTagsByName("param")) {
+                if (p.getValue().contains(annotationName)) {
+                    String description = "";
+                    if (p.getValue().split(" ", 2).length >= 2) {
+                        description = p.getValue().split(" ", 2)[1].trim();
+                        if (description.contains("optional")) {
+                            required = false;
+                        }
+                    } else {
+                        throw new RuntimeException(String.format("No description for parameter \"%s\" in " +
+                                                                         "method \"%s\" in %s (line %d)",
+                                                                 p.getValue(), javaMethod.getName(),
+                                                                 javaMethod.getDeclaringClass().getName(),
+                                                                 javaMethod.getLineNumber()));
+                    }
+                    individualParameterNode.put("description", description);
+                }
+            }
+            individualParameterNode.put("required", required);
+            parameters.add(individualParameterNode);
+        }
+    }
+
+    // Returns the Swagger specified strings for the type of a parameter
+    private String getType(JavaType javaType) {
+        String type = javaType.getFullyQualifiedName();
+        String value;
+        if (type.equals(String.class.getName())) {
+            value = "string";
+        } else if (type.equals("int")) {
+            value = "integer";
+        } else if (type.equals(boolean.class.getName())) {
+            value = "boolean";
+        } else if (type.equals(long.class.getName())) {
+            value = "number";
+        } else {
+            value = "";
+        }
+        return value;
+    }
+
+    // Writes the swagger.json file using the supplied JSON root.
+    private void genCatalog(File dstDirectory, ObjectNode root) {
+        File swaggerCfg = new File(dstDirectory, JSON_FILE);
+        if (dstDirectory.exists() || dstDirectory.mkdirs()) {
+            try (FileWriter fw = new FileWriter(swaggerCfg);
+                 PrintWriter pw = new PrintWriter(fw)) {
+                pw.println(root.toString());
+            } catch (IOException e) {
+                throw new RuntimeException("Unable to write " + JSON_FILE, e);
+            }
+        } else {
+            throw new RuntimeException("Unable to create " + dstDirectory);
+        }
+    }
+
+    // Generates the registrator Java component.
+    private void genRegistrator(File dstDirectory, String webContext,
+                                String apiTitle, String apiVersion,
+                                String apiPackage, String apiDescription) {
+        File dir = new File(dstDirectory, resourceDirectory != null ? GEN_SRC : ".");
+        File reg = new File(dir, apiRegistratorPath(apiPackage));
+        File pkg = reg.getParentFile();
+        if (pkg.exists() || pkg.mkdirs()) {
+            try {
+                String src = new String(ByteStreams.toByteArray(getClass().getResourceAsStream(REG_SRC)));
+                src = src.replace("${api.package}", apiPackage)
+                        .replace("${web.context}", webContext)
+                        .replace("${api.title}", apiTitle)
+                        .replace("${api.description}", apiDescription);
+                Files.write(src.getBytes(), reg);
+            } catch (IOException e) {
+                throw new RuntimeException("Unable to write " + reg, e);
+            }
+        } else {
+            throw new RuntimeException("Unable to create " + reg);
+        }
+    }
+
+    private String shortText(String comment) {
+        int i = comment.indexOf('.');
+        return i > 0 ? comment.substring(0, i) : comment;
+    }
+
+    public static String apiRegistratorPath(String apiPackage) {
+        return apiPackage.replaceAll("\\.", "/") + "/ApiDocRegistrator.java";
+    }
+}
\ No newline at end of file

+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.
+ */
+package org.onosproject.onosjar;
+
+import com.facebook.buck.io.ProjectFilesystem;
+import com.facebook.buck.rules.SourcePathResolver;
+import com.facebook.buck.step.AbstractExecutionStep;
+import com.facebook.buck.step.ExecutionContext;
+import com.facebook.buck.step.StepExecutionResult;
+import com.google.common.collect.ImmutableSortedSet;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Path;
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * Buck build step to trigger SwaggerGenerator.
+ */
+public class SwaggerStep extends AbstractExecutionStep {
+
+    private final ProjectFilesystem filesystem;
+
+    private final ImmutableSortedSet<Path> srcs;
+    private final ImmutableSortedSet<Path> resources;
+    private final Path genSourcesOutput;
+    private final Path genResourcesOutput;
+
+    private final String webContext;
+    private final String apiTitle;
+    private final String apiVersion;
+    private final String apiPackage;
+    private final String apiDescription;
+
+
+    public SwaggerStep(ProjectFilesystem filesystem,
+                       ImmutableSortedSet<Path> srcs,
+                       ImmutableSortedSet<Path> resources,
+                       Path genSourcesOutput, Path genResourcesOutput,
+                       String webContext, String apiTitle, String apiVersion,
+                       String apiPackage, String apiDescription) {
+        super("swagger");
+        this.filesystem = filesystem;
+        this.srcs = srcs;
+        this.resources = resources;
+        this.genSourcesOutput = genSourcesOutput;
+        this.genResourcesOutput = genResourcesOutput;
+        this.webContext = webContext;
+        this.apiTitle = apiTitle;
+        this.apiVersion = apiVersion;
+        this.apiPackage = apiPackage;
+        this.apiDescription = apiDescription;
+    }
+
+    @Override
+    public StepExecutionResult execute(ExecutionContext executionContext)
+            throws IOException, InterruptedException {
+        try {
+            List<File> srcFiles = srcs.stream()
+                    .map(src -> filesystem.resolve(src).toFile())
+                    .collect(Collectors.toList());
+            List<File> resourceFiles = resources.stream()
+                    .map(rsrc -> filesystem.resolve(rsrc).toFile())
+                    .collect(Collectors.toList());
+            new SwaggerGenerator(srcFiles, resourceFiles, null, null,
+                                 filesystem.resolve(genSourcesOutput).toFile(),
+                                 filesystem.resolve(genResourcesOutput).toFile(),
+                                 webContext,
+                                 apiTitle,
+                                 apiVersion,
+                                 apiPackage,
+                                 apiDescription).execute();
+
+            return StepExecutionResult.SUCCESS;
+        } catch (Exception e) {
+            e.printStackTrace();
+            // FIXME print the exception
+            return StepExecutionResult.ERROR;
+        }
+    }
+
+    Path apiRegistratorPath() {
+        return genSourcesOutput.resolve(SwaggerGenerator.apiRegistratorPath(apiPackage));
+    }
+}

+/*
+ * Auto-generated by OnosSwaggerMojo.
+ *
+ * Copyright 2015-present Open Networking Laboratory
+ *
+ * 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.
+ */
+package ${api.package};
+
+import org.apache.felix.scr.annotations.Component;
+import org.onosproject.rest.AbstractApiDocRegistrator;
+import org.onosproject.rest.ApiDocProvider;
+
+@Component(immediate = true)
+public class ApiDocRegistrator extends AbstractApiDocRegistrator {
+    public ApiDocRegistrator() {
+        super(new ApiDocProvider("${web.context}",
+                                 "${api.title}",
+                                 ApiDocRegistrator.class.getClassLoader()));
+    }
+}

@@ -34,5 +34,29 @@ if [ -n "$FORCE_UPDATE" ] || [ ! -f "buck" ] || [ "$REQUIRED_VERSION" != "$(cat
 fi
 popd > /dev/null
 
+BUCK=$ONOS_ROOT/bin/buck
+PLUGINS=$ONOS_ROOT/bucklets/plugins
+ONOS_PLUGIN=$PLUGINS/onosjar.jar
+
+if [ ! -f "$ONOS_PLUGIN" -o -n "$ONOS_BUILD_PLUGIN" ]; then
+    echo "Building ONOS Buck plugins..."
+
+    # Build it first
+    pluginJar=$(NO_BUCKD=1 $BUCK build //tools/build/buck-plugin:onosjar --show-output 2>/dev/null | grep onosjar.jar | cut -d\  -f2)
+
+    CHK_NEW=$(cksum $pluginJar | cut -d' ' -f1-2)
+    CHK_OLD=$(cksum $ONOS_PLUGIN 2>/dev/null | cut -d' ' -f1-2)
+    if [ "$CHK_NEW" != "$CHK_OLD" ]; then
+        # diff plugins... if different, copy and restart buckd
+        # Then install it
+        mkdir -p $PLUGINS
+        cp $ONOS_ROOT/$pluginJar $PLUGINS
+        echo "Updated to the latest plugin."
+        $BUCK clean 2>/dev/null
+    else
+        echo "Plugin was already up to date."
+    fi
+fi
+
 # Finally, run the Buck command...
-$ONOS_ROOT/bin/buck "$@"
+$BUCK "$@"

@@ -14,4 +14,8 @@ osgi_jar_with_tests (
     deps = COMPILE_DEPS,
     test_deps = TEST_DEPS,
     web_context = '/onos/v1',
+    api_title = 'ONOS Core REST API',
+    api_version = '1.0',
+    api_description = 'ONOS Core REST API',
+    api_package = 'org.onosproject.rest.impl',
 )