Add download server api

Signed-off-by: SirWayne <dennis.melzer@bosch-si.com>

hawkbit-ddi-dl-api/pom.xml

@@ -0,0 +1,29 @@
+<!--
+
+    Copyright (c) 2015 Bosch Software Innovations GmbH and others.
+
+    All rights reserved. This program and the accompanying materials
+    are made available under the terms of the Eclipse Public License v1.0
+    which accompanies this distribution, and is available at
+    http://www.eclipse.org/legal/epl-v10.html
+
+-->
+
+<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>org.eclipse.hawkbit</groupId>
+    <artifactId>hawkbit-parent</artifactId>
+    <version>0.2.0-SNAPSHOT</version>
+  </parent>
+  <artifactId>hawkbit-ddi-dl-api</artifactId>
+  <name>hawkBit :: DDI Download Server (DL) API</name>
+
+   <dependencies>
+      <dependency>
+         <groupId>org.springframework.security</groupId>
+         <artifactId>spring-security-web</artifactId>
+      </dependency>
+   </dependencies>
+</project>

hawkbit-ddi-dl-api/src/main/java/org/eclipse/hawkbit/ddi/dl/rest/api/DdiDlArtifactStoreControllerRestApi.java

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+/**
+ * Copyright (c) 2011-2016 Bosch Software Innovations GmbH, Germany. All rights reserved.
+ * 
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.eclipse.hawkbit.ddi.dl.rest.api;
+
+import java.io.InputStream;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.security.web.bind.annotation.AuthenticationPrincipal;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+/**
+ * REST resource handling for artifact download operations.
+ */
+@RequestMapping(DdiDlRestConstants.ARTIFACTS_V1_REQUEST_MAPPING)
+public interface DdiDlArtifactStoreControllerRestApi {
+
+    /**
+     * Handles GET download request. This could be full or partial download
+     * request.
+     *
+     * @param fileName
+     *            to search for
+     * @param targetid
+     *            of authenticated target
+     *
+     * @return response of the servlet which in case of success is status code
+     *         {@link HttpStatus#OK} or in case of partial download
+     *         {@link HttpStatus#PARTIAL_CONTENT}.
+     */
+    @RequestMapping(method = RequestMethod.GET, value = DdiDlRestConstants.ARTIFACT_DOWNLOAD_BY_FILENAME + "/{fileName}")
+    @ResponseBody
+    public ResponseEntity<InputStream> downloadArtifactByFilename(@PathVariable("fileName") final String fileName,
+            @AuthenticationPrincipal final String targetid);
+
+    /**
+     * Handles GET MD5 checksum file download request.
+     *
+     * @param fileName
+     *            to search for
+     *
+     * @return response of the servlet
+     */
+    @RequestMapping(method = RequestMethod.GET, value = DdiDlRestConstants.ARTIFACT_DOWNLOAD_BY_FILENAME + "/{fileName}"
+            + DdiDlRestConstants.ARTIFACT_MD5_DWNL_SUFFIX)
+    @ResponseBody
+    public ResponseEntity<Void> downloadArtifactMD5ByFilename(@PathVariable("fileName") final String fileName);
+
+}

hawkbit-ddi-dl-api/src/main/java/org/eclipse/hawkbit/ddi/dl/rest/api/DdiDlRestConstants.java

@@ -0,0 +1,40 @@
+/**
+ * Copyright (c) 2015 Bosch Software Innovations GmbH and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.eclipse.hawkbit.ddi.dl.rest.api;
+
+/**
+ * Constants for the direct device integration rest resources.
+ */
+public final class DdiDlRestConstants {
+
+    /**
+     * The base URL mapping of the artifact repository rest resources.
+     */
+    public static final String ARTIFACTS_V1_REQUEST_MAPPING = "/{tenant}/controller/artifacts/v1";
+
+    /**
+     * The artifact URL mapping rest resource.
+     */
+    public static final String ARTIFACT_DOWNLOAD = "artifact";
+
+    /**
+     * The artifact by filename URL mapping rest resource.
+     */
+    public static final String ARTIFACT_DOWNLOAD_BY_FILENAME = "/filename";
+
+    /**
+     * File suffix for MDH hash download (see Linux md5sum).
+     */
+    public static final String ARTIFACT_MD5_DWNL_SUFFIX = ".MD5SUM";
+
+    // constant class, private constructor.
+    private DdiDlRestConstants() {
+
+    }
+}