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/*-
* ================================================================================
* DCAE DMaaP Bus Controller Web Application
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property
* ================================================================================
* 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.openecomp.dmaapbc.dbcapp.controller;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.jar.Attributes;
import java.util.jar.Manifest;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import org.openecomp.portalsdk.core.controller.RestrictedBaseController;
import org.openecomp.portalsdk.core.logging.logic.EELFLoggerDelegate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
/**
* This controller responds to a request for the web application manifest,
* returning a JSON with the information that was created at build time.
*
* Manifest entries have names with hyphens, which means Javascript code can't
* simply use the shorthand object.key; instead use object['key'].
*/
@RestController
@Configuration
@EnableAspectJAutoProxy
@RequestMapping("/")
public class ManifestController extends RestrictedBaseController {
private EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(ManifestController.class);
/**
* Required to obtain the webapp manifest.
*/
@Autowired
ServletContext context;
/**
* Gets the content of the webapp manifest file META-INF/MANIFEST.MF.
*
* @return Attributes object with key-value pairs from the manifest
* @throws IOException
*/
private Attributes getWebappManifest() throws IOException {
// Path to resource on classpath
final String MANIFEST_RESOURCE_PATH = "/META-INF/MANIFEST.MF";
// Manifest is formatted as Java-style properties
InputStream inputStream = context.getResourceAsStream(MANIFEST_RESOURCE_PATH);
if (inputStream == null)
throw new IOException("getWebappManifest: failed to get resource at path " + MANIFEST_RESOURCE_PATH);
Manifest manifest = new Manifest(inputStream);
inputStream .close();
return manifest.getMainAttributes();
}
/**
* Gets the webapp manifest contents as a JSON object.
*
* @param request
* @return A map of key-value pairs. On success:
*
* <pre>
* { "manifest" : { "key1": "value1", "key2": "value2" } }
* </pre>
*
* On failure:
*
* <pre>
* { "error": "message" }
* </pre>
*/
@RequestMapping(value = { "/manifest" }, method = RequestMethod.GET, produces = "application/json")
@ResponseBody
public Map<String, Object> getManifest(HttpServletRequest request) {
logger.setRequestBasedDefaultsIntoGlobalLoggingContext(request, DataBusHomeController.APP_NAME);
logger.info(EELFLoggerDelegate.auditLogger, request.getMethod() + request.getRequestURI());
Map<String, Object> response = new HashMap<String, Object>();
try {
Attributes attributes = getWebappManifest();
response.put("manifest", attributes);
} catch (Exception ex) {
logger.error(EELFLoggerDelegate.errorLogger, "getManifest: failed to read manifest", ex);
response.put("error", "failed to get manifest: " + ex.toString());
}
return response;
}
}
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