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SwiftServlet.java
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SwiftServlet.java
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package net.bluemix;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.net.ssl.HttpsURLConnection;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.io.Closeables;
import com.google.inject.Module;
import org.apache.commons.codec.binary.Base64;
import org.jclouds.ContextBuilder;
import org.jclouds.io.Payload;
import org.jclouds.logging.slf4j.config.SLF4JLoggingModule;
import org.jclouds.openstack.swift.v1.SwiftApi;
import org.jclouds.openstack.swift.v1.domain.Container;
import org.jclouds.openstack.swift.v1.domain.SwiftObject;
import org.jclouds.openstack.swift.v1.features.ContainerApi;
import org.jclouds.openstack.swift.v1.features.ObjectApi;
import org.jclouds.openstack.swift.v1.options.CreateContainerOptions;
import org.jclouds.openstack.swift.v1.options.PutOptions;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import static com.google.common.io.ByteSource.wrap;
import static org.jclouds.io.Payloads.newByteSourcePayload;
/**
* Servlet implementation class SwiftServlet
*/
public class SwiftServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public static final String CONTAINER_NAME = "bluemix-objectstorage-v2-example";
public static final String OBJECT_NAME = "bluemix-objectstorage-v2-example.txt";
private SwiftApi swiftApi;
private Map<String, List<Map<String,Object>>> vcap_map;
public String region;
/**
* Default constructor.
*/
public SwiftServlet() {
Iterable<Module> modules = ImmutableSet.<Module>of(
new SLF4JLoggingModule());
Map<String, String> env = System.getenv();
Map<String, Object> cloudIntegration_map;
String vcap = env.get("VCAP_SERVICES");
ObjectMapper om = new ObjectMapper();
try {
vcap_map = om.readValue(vcap,Map.class);
} catch (JsonParseException e) {
e.printStackTrace();
} catch (JsonMappingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
List<Map<String,Object>> list = vcap_map.get("Object Storage");
Map<String, Object> objectStorage = list.get(0);
Map<String, Object> credentials = (Map<String, Object>)objectStorage.get("credentials");
String url = (String)credentials.get("auth_url");
String vcap_secret = "Basic " +
new String (Base64.encodeBase64( (credentials.get("username") + ":" + credentials.get("password")).getBytes()));
URL obj;
try {
obj = new URL(url);
HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();
con.setRequestMethod("GET");
con.setRequestProperty ("Authorization", vcap_secret);
InputStream in = con.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
String cloudIntegration = reader.readLine();
om = new ObjectMapper();
cloudIntegration_map = om.readValue(cloudIntegration,Map.class);
String provider = "openstack-swift";
Map<String, Object> cloudIntegration_details = (Map<String, Object>)cloudIntegration_map.get("CloudIntegration");
Map<String, Object> cloudIntegration_credentials = (Map<String, Object>)cloudIntegration_details.get("credentials");
String endpoint = (String) cloudIntegration_details.get("auth_url") + "/v2.0";
String tenantName = (String) cloudIntegration_details.get("project");
String userName = (String) cloudIntegration_credentials.get("userid");
String password = (String) cloudIntegration_credentials.get("password");
String identity = tenantName+":"+userName;
region = (String) cloudIntegration_details.get("region");
swiftApi = ContextBuilder.newBuilder(provider)
.endpoint(endpoint)
.credentials(identity, password)
.modules(modules)
.buildApi(SwiftApi.class);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (ProtocolException e) {
e.printStackTrace();
} catch (JsonParseException e) {
e.printStackTrace();
} catch (JsonMappingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.getWriter().println("In SwiftServlet");
SwiftServlet swiftservlet = new SwiftServlet();
try {
swiftservlet.createContainer();
swiftservlet.uploadObjectFromString();
swiftservlet.listContainers(response);
swiftservlet.retrieveObjects(response);
swiftservlet.close();
} catch (Exception e) {
e.printStackTrace();
response.getWriter().println(e);
for (int i = 0; i < e.getStackTrace().length; i++) {
response.getWriter().println(e.getStackTrace()[i]);
}
} finally {
swiftservlet.close();
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
private void createContainer() {
System.out.println("Create Container");
ContainerApi containerApi = swiftApi.getContainerApi(region);
CreateContainerOptions options = CreateContainerOptions.Builder
.metadata(ImmutableMap.of(
"key1", "value1",
"key2", "value2"));
containerApi.create(CONTAINER_NAME, options);
System.out.println(" " + CONTAINER_NAME);
}
private void uploadObjectFromString() {
System.out.println("Upload Object From String");
ObjectApi objectApi = swiftApi.getObjectApi(region, CONTAINER_NAME);
Payload payload = newByteSourcePayload(wrap("Hello World".getBytes()));
objectApi.put(OBJECT_NAME, payload, PutOptions.Builder.metadata(ImmutableMap.of("key1", "value1")));
System.out.println(" " + OBJECT_NAME);
}
private void listContainers(HttpServletResponse response) throws IOException {
System.out.println("List Containers");
ContainerApi containerApi = swiftApi.getContainerApi(region);
Set<Container> containers = containerApi.list().toSet();
response.getWriter().println("Listing Containers: ");
for (Container container : containers) {
response.getWriter().println(" " + container);
}
response.getWriter().println(" ");
}
private void retrieveObjects(HttpServletResponse response) throws IOException {
System.out.println("Upload Object From String");
ObjectApi objectApi = swiftApi.getObjectApi(region, CONTAINER_NAME);
SwiftObject swiftObject = objectApi.get(OBJECT_NAME);
response.getWriter().println("Retrieved following object: ");
response.getWriter().println(" Object: "+ swiftObject);
response.getWriter().println(" Payload: "+ swiftObject.getPayload());
}
public void close() throws IOException {
Closeables.close(swiftApi, true);
}
}