Completers for netcfg command

Change-Id: I925825f3ddb3ffde8fb59d8d0d4ccb9faf92fe37

+/*
+ * Copyright 2015 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.cli.cfg;
+
+import static com.google.common.base.Preconditions.checkArgument;
+
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+import org.apache.karaf.shell.console.completer.ArgumentCompleter.ArgumentList;
+import org.onosproject.cli.AbstractChoicesCompleter;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.config.Config;
+import org.onosproject.net.config.NetworkConfigRegistry;
+import org.onosproject.net.config.SubjectFactory;
+
+import com.google.common.collect.ImmutableList;
+
+/**
+ * Network configuration config key completer.
+ *
+ * Assumes 2 argument before the one being completed is SubjectClassKey
+ * and argument right before the one being completed is SubjectKey.
+ */
+public class ConfigKeyCompleter extends AbstractChoicesCompleter {
+
+    // FIXME ConfigKeyCompleter never gets called??
+    @Override
+    protected List<String> choices() {
+        NetworkConfigRegistry service = AbstractShellCommand.get(NetworkConfigRegistry.class);
+        ArgumentList args = getArgumentList();
+
+        checkArgument(args.getCursorArgumentIndex() >= 2);
+        String subjectClassKey = args.getArguments()[args.getCursorArgumentIndex() - 2];
+
+        SubjectFactory<?> subjectFactory = service.getSubjectFactory(subjectClassKey);
+        if (subjectFactory == null) {
+            return ImmutableList.of();
+        }
+
+        String subjectKey = args.getArguments()[args.getCursorArgumentIndex() - 1];
+
+        Object subject = subjectFactory.createSubject(subjectKey);
+        Set<? extends Config<Object>> configs = service.getConfigs(subject);
+        return configs.stream().map(Config::key).collect(Collectors.toList());
+    }
+
+}

+/*
+ * Copyright 2015 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.cli.cfg;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.onosproject.cli.AbstractChoicesCompleter;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.config.NetworkConfigRegistry;
+import org.onosproject.net.config.SubjectFactory;
+
+/**
+ * Network configuration subject class key completer.
+ */
+public class SubjectClassKeyCompleter extends AbstractChoicesCompleter {
+
+    @Override
+    protected List<String> choices() {
+        NetworkConfigRegistry service = AbstractShellCommand.get(NetworkConfigRegistry.class);
+        return service.getSubjectClasses()
+                .stream()
+                .map(service::getSubjectFactory)
+                .map(SubjectFactory::subjectClassKey)
+                .collect(Collectors.toList());
+    }
+
+}

+/*
+ * Copyright 2015 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.cli.cfg;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+import org.apache.karaf.shell.console.completer.ArgumentCompleter.ArgumentList;
+import org.onosproject.cli.AbstractChoicesCompleter;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.config.NetworkConfigRegistry;
+import org.onosproject.net.config.SubjectFactory;
+
+/**
+ * Network configuration subject key completer.
+ *
+ * Assumes argument right before the one being completed is SubjectClassKey.
+ */
+public class SubjectKeyCompleter extends AbstractChoicesCompleter {
+
+    @Override
+    protected List<String> choices() {
+        NetworkConfigRegistry service = AbstractShellCommand.get(NetworkConfigRegistry.class);
+        ArgumentList args = getArgumentList();
+        String subjectClassKey = args.getArguments()[args.getCursorArgumentIndex() - 1];
+
+        SubjectFactory subjectFactory = service.getSubjectFactory(subjectClassKey);
+        if (subjectFactory == null) {
+            return Collections.emptyList();
+        }
+        // get all registered subject objects.
+        Set<Object> subjects = service.getSubjects(subjectFactory.subjectClass());
+        return subjects.stream().map(subjectFactory::subjectKey).collect(Collectors.toList());
+    }
+
+}

@@ -57,6 +57,11 @@
 
         <command>
             <action class="org.onosproject.cli.cfg.NetworkConfigCommand"/>
+            <completers>
+                <ref component-id="subjectClassKeyCompleter"/>
+                <ref component-id="subjectKeyCompleter"/>
+                <ref component-id="configKeyCompleter"/>
+            </completers>
         </command>
 
         <command>
@@ -532,4 +537,8 @@
 
     <bean id="placeholderCompleter" class="org.onosproject.cli.PlaceholderCompleter"/>
 
+    <bean id="subjectClassKeyCompleter" class="org.onosproject.cli.cfg.SubjectClassKeyCompleter"/>
+    <bean id="subjectKeyCompleter" class="org.onosproject.cli.cfg.SubjectKeyCompleter"/>
+    <bean id="configKeyCompleter" class="org.onosproject.cli.cfg.ConfigKeyCompleter"/>
+
 </blueprint>