package ch.iterate.openstack.swift.handler;
import org.apache.http.Header;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.ResponseHandler;
import java.io.IOException;
import ch.iterate.openstack.swift.Constants;
import ch.iterate.openstack.swift.Response;
import ch.iterate.openstack.swift.exception.AuthorizationException;
import ch.iterate.openstack.swift.exception.ContainerNotFoundException;
import ch.iterate.openstack.swift.exception.GenericException;
import ch.iterate.openstack.swift.model.ContainerInfo;
import ch.iterate.openstack.swift.model.Region;
public class ContainerInfoHandler implements ResponseHandler<ContainerInfo> {
private Region region;
private String container;
public ContainerInfoHandler(final Region region, final String container) {
this.region = region;
this.container = container;
}
public ContainerInfo handleResponse(final HttpResponse response) throws ClientProtocolException, IOException {
if(response.getStatusLine().getStatusCode() == HttpStatus.SC_NO_CONTENT ||
response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
return new ContainerInfo(region, container,
this.getContainerObjectCount(response), this.getContainerBytesUsed(response));
}
else if(response.getStatusLine().getStatusCode() == HttpStatus.SC_NOT_FOUND) {
throw new ContainerNotFoundException(new Response(response));
}
else if(response.getStatusLine().getStatusCode() == HttpStatus.SC_UNAUTHORIZED) {
throw new AuthorizationException(new Response(response));
}
throw new GenericException(new Response(response));
}
/**
* Get the number of objects in the header
*
* @return Null if the header is not present or the correct value as defined by the header
*/
private Integer getContainerObjectCount(final HttpResponse response) {
Header contCountHeader = response.getFirstHeader(Constants.X_CONTAINER_OBJECT_COUNT);
if(contCountHeader != null) {
return Integer.parseInt(contCountHeader.getValue());
}
return null;
}
/**
* Get the number of bytes used by the container
*
* @return Null if the header is not present or the correct value as defined by the header
*/
private Long getContainerBytesUsed(final HttpResponse response) {
Header contBytesUsedHeader = response.getFirstHeader(Constants.X_CONTAINER_BYTES_USED);
if(contBytesUsedHeader != null) {
return Long.parseLong(contBytesUsedHeader.getValue());
}
return null;
}
}