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/*
* ====================================================================
* Project: openMDX/Core, http://www.openmdx.org/
* Description: HttpMessage
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2013, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ------------------
*
* This product includes software developed by other organizations as
* listed in the NOTICE file.
*/
package org.openmdx.application.rest.http.stream;
import java.io.Closeable;
import java.io.IOException;
import java.net.HttpURLConnection;
import javax.resource.ResourceException;
import javax.resource.cci.InteractionSpec;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import org.openmdx.application.rest.http.HttpContext;
import org.openmdx.application.rest.http.HttpInteraction;
import org.openmdx.application.rest.http.spi.Message;
import org.openmdx.base.resource.spi.ResourceExceptions;
import org.openmdx.base.resource.spi.RestInteractionSpec;
import org.openmdx.base.rest.spi.RestFormatters;
import org.openmdx.base.rest.spi.RestSource;
import org.openmdx.base.rest.stream.RestTarget;
import org.openmdx.base.rest.stream.StandardRestFormatter;
import org.openmdx.kernel.exception.BasicException;
import org.xml.sax.InputSource;
/**
* Abstract Message
*/
public class StandardMessage implements Message, Closeable {
/**
* Constructor
*
* @param httpContext
* @param httpInteraction
* @param interactionSpec
* @param uri
* @param xri
*/
public StandardMessage(
HttpContext httpContext,
HttpInteraction httpInteraction,
RestInteractionSpec interactionSpec,
String uri,
HttpURLConnection urlConnection
){
this.httpContext = httpContext;
this.httpInteraction = httpInteraction;
this.urlConnection = urlConnection;
this.urlConnection.setDoOutput(
interactionSpec.getInteractionVerb() != InteractionSpec.SYNC_RECEIVE
);
}
final HttpContext httpContext;
private final HttpInteraction httpInteraction;
/**
* The lazily created URL connection
*/
protected HttpURLConnection urlConnection;
/**
* The lazily created request body
*/
private RestTarget requestBody = null;
/**
* The lazily created response body
*/
private RestSource responseBody = null;
/**
* The eagerly acquired REST formatter instance
*/
protected static final StandardRestFormatter restFormatter = RestFormatters.getFormatter();
/**
* Create a request body
*
* @return a new request body
*/
protected RestTarget newRequestBody(
) throws IOException {
return new RestTarget(
httpContext.getConnectionURL()
){
/* (non-Javadoc)
* @see org.openmdx.application.rest.http.RestFormat.Target#newWriter()
*/
@Override
protected XMLStreamWriter newWriter(
) throws XMLStreamException {
String contentType = httpContext.getContentType();
setRequestField(
"Content-Type",
contentType
);
try {
return restFormatter.getOutputFactory(httpContext.getMimeType()).createXMLStreamWriter(
urlConnection.getOutputStream()
);
} catch (IOException exception) {
throw toXMLStreamException(exception);
} catch (BasicException exception) {
throw toXMLStreamException(exception);
}
}
};
}
/**
* Create a response body
*
* @return a new response body
*/
protected RestSource newResponseBody(
) throws IOException {
return new RestSource(
httpContext.getConnectionURL(),
new InputSource(this.urlConnection.getInputStream()),
httpContext.getMimeType(),
this
);
}
/* (non-Javadoc)
* @see org.openmdx.application.rest.http.AbstractHttpInteraction.Message#execute()
*/
@Override
public int execute(
) throws ResourceException {
if(this.requestBody != null) try {
this.requestBody.close();
} catch (IOException exception) {
throw ResourceExceptions.initHolder(
new ResourceException(
"Could not submit REST request",
BasicException.newEmbeddedExceptionStack(
exception,
BasicException.Code.DEFAULT_DOMAIN,
BasicException.Code.PROCESSING_FAILURE
)
)
);
}
try {
return httpInteraction.getStatus(this.urlConnection);
} catch (IOException exception) {
throw ResourceExceptions.initHolder(
new ResourceException(
"Could not process REST request",
BasicException.newEmbeddedExceptionStack(
exception,
BasicException.Code.DEFAULT_DOMAIN,
BasicException.Code.PROCESSING_FAILURE
)
)
);
}
}
/* (non-Javadoc)
* @see org.openmdx.application.rest.http.AbstractHttpInteraction.Message#getRequestBody()
*/
@Override
public final RestTarget getRequestBody(
) throws ResourceException {
if(this.requestBody == null) try {
this.requestBody = newRequestBody();
} catch (IOException exception) {
toResourceException(exception);
}
return this.requestBody;
}
/* (non-Javadoc)
* @see org.openmdx.application.rest.http.AbstractHttpInteraction.Message#getResponseBody()
*/
@Override
public final RestSource getResponseBody(
) throws ResourceException {
if(this.responseBody == null) try {
this.responseBody = newResponseBody();
} catch (IOException exception) {
toResourceException(exception);
}
return this.responseBody;
}
/* (non-Javadoc)
* @see org.openmdx.application.rest.http.AbstractHttpInteraction.Message#getResponseField(java.lang.String)
*/
@Override
public final String getResponseField(String key) {
return this.urlConnection.getHeaderField(key);
}
/* (non-Javadoc)
* @see org.openmdx.application.rest.http.AbstractHttpInteraction.Message#setRequestField(java.lang.String, java.lang.String)
*/
@Override
public final void setRequestField(String key, String value) {
this.urlConnection.setRequestProperty(key, value);
}
/* (non-Javadoc)
* @see java.io.Closeable#close()
*/
@Override
public void close(
) throws IOException {
if(this.urlConnection != null) {
this.urlConnection.disconnect();
}
}
protected void toResourceException(
IOException exception
) throws ResourceException {
throw ResourceExceptions.initHolder(
new ResourceException(
exception.getMessage(),
BasicException.newEmbeddedExceptionStack(exception)
)
);
}
}
