[Goldeneye] [ONOS-4158] Implement path computation algorithm based on various constraints

Change-Id: I82d3f41146c56a2d7671dc3dbef4d050ae70cc9a

+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ 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.
+  -->
+<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/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.onosproject</groupId>
+        <artifactId>onos-apps</artifactId>
+        <version>1.6.0-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+    <artifactId>onos-app-pce</artifactId>
+    <packaging>bundle</packaging>
+
+    <description>PCE as central controller</description>
+
+    <properties>
+        <onos.app.name>org.onosproject.pce</onos.app.name>
+        <onos.app.category>default</onos.app.category>
+        <onos.app.url>http://onosproject.org</onos.app.url>
+        <onos.app.readme>PCE as central controller.</onos.app.readme>
+    </properties>
+   <dependencies>
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onlab-junit</artifactId>
+            <scope>test</scope>
+        </dependency>
+   </dependencies>
+</project>

+/*
+ * 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.pce.pceservice;
+
+/**
+ * Representation of LSP type.
+ */
+public enum LspType {
+    /**
+     * Signifies that path is created via signaling mode.
+     */
+    WITH_SIGNALLING(0),
+
+    /**
+     * Signifies that path is created via SR mode.
+     */
+    SR_WITHOUT_SIGNALLING(1),
+
+    /**
+     * Signifies that path is created via without signaling and without SR mode.
+     */
+    WITHOUT_SIGNALLING_AND_WITHOUT_SR(2);
+
+    int value;
+
+    /**
+     * Assign val with the value as the LSP type.
+     *
+     * @param val LSP type
+     */
+    LspType(int val) {
+        value = val;
+    }
+
+    /**
+     * Returns value of LSP type.
+     *
+     * @return LSP type
+     */
+    public byte type() {
+        return (byte) value;
+    }
+}
\ 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.pce.pceservice.api;
+
+import java.util.List;
+
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.intent.Constraint;
+import org.onosproject.pce.pceservice.LspType;
+
+/**
+ * Service to compute path based on constraints, release path and update path with new constraints.
+ */
+public interface PceService {
+
+    /**
+     * Creates new path based on constraints and lsp type.
+     *
+     * @param src source device
+     * @param dst destination device
+     * @param constraints list of constraints to be applied on path
+     * @param lspType type of path to be setup
+     * @return false on failure and true on successful path creation
+     */
+    boolean setupPath(DeviceId src, DeviceId dst, List<Constraint> constraints, LspType lspType);
+
+    //TODO: updatePath
+    //TODO: releasePath
+    //TODO: queryPath
+}
\ 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.
+ */
+
+/**
+ * PCE service API.
+ */
+package org.onosproject.pce.pceservice.api;

+/*
+ * 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.
+ */
+
+/**
+ * PCE service application.
+ */
+package org.onosproject.pce.pceservice;
\ No newline at end of file

@@ -48,6 +48,7 @@
         <module>xos-integration</module>
         <module>pcep-api</module>
         <module>iptopology-api</module>
+        <module>pce</module>
         <module>olt</module>
         <module>cip</module>
         <module>flowanalyzer</module>