/*
* Copyright 2010 JBoss Inc
*
* 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.guvnor.tools.actions;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Iterator;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.webdav.IResponse;
import org.guvnor.tools.Activator;
import org.guvnor.tools.utils.ActionUtils;
import org.guvnor.tools.utils.GuvnorMetadataProps;
import org.guvnor.tools.utils.GuvnorMetadataUtils;
import org.guvnor.tools.utils.PlatformUtils;
import org.guvnor.tools.utils.webdav.IWebDavClient;
import org.guvnor.tools.utils.webdav.ResourceProperties;
import org.guvnor.tools.utils.webdav.WebDavClientFactory;
import org.guvnor.tools.utils.webdav.WebDavException;
import org.guvnor.tools.utils.webdav.WebDavServerCache;
/**
* Updates a local resource with the latest contents from Guvnor.
*/
public class UpdateAction implements IObjectActionDelegate {
private IStructuredSelection selectedItems;
public UpdateAction() {
super();
}
/*
* @see IObjectActionDelegate#setActivePart(IAction, IWorkbenchPart)
*/
public void setActivePart(IAction action, IWorkbenchPart targetPart) { }
/*
* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
*/
@SuppressWarnings("unchecked")
public void run(IAction action) {
assert(selectedItems != null);
for (Iterator it = selectedItems.iterator(); it.hasNext();) {
Object oneItem = it.next();
if (oneItem instanceof IFile) {
processUpdate((IFile)oneItem);
}
}
PlatformUtils.updateDecoration();
}
private void processUpdate(IFile selectedFile) {
IResponse response = null;
try {
GuvnorMetadataProps props = GuvnorMetadataUtils.getGuvnorMetadata(selectedFile);
IWebDavClient client = WebDavServerCache.getWebDavClient(props.getRepository());
if (client == null) {
client = WebDavClientFactory.createClient(new URL(props.getRepository()));
WebDavServerCache.cacheWebDavClient(props.getRepository(), client);
}
InputStream ins = null;
try {
response = client.getResourceInputStream(props.getFullpath());
ins = response.getInputStream();
} catch (WebDavException wde) {
if (wde.getErrorCode() != IResponse.SC_UNAUTHORIZED) {
// If not an authentication failure, we don't know what to do with it
throw wde;
}
boolean retry = PlatformUtils.getInstance().
authenticateForServer(props.getRepository(), client);
if (retry) {
response = client.getResourceInputStream(props.getFullpath());
ins = response.getInputStream();
}
}
if (ins != null) {
selectedFile.setContents(ins, true, true, null);
GuvnorMetadataUtils.markCurrentGuvnorResource(selectedFile);
ResourceProperties resProps = client.queryProperties(props.getFullpath());
GuvnorMetadataProps mdProps = GuvnorMetadataUtils.getGuvnorMetadata(selectedFile);
mdProps.setVersion(resProps.getLastModifiedDate());
mdProps.setRevision(resProps.getRevision());
GuvnorMetadataUtils.setGuvnorMetadataProps(selectedFile.getFullPath(), mdProps);
}
} catch (Exception e) {
Activator.getDefault().displayError(IStatus.ERROR, e.getMessage(), e, true);
} finally {
if (response != null) {
try {
response.close();
} catch (IOException ioe) {
Activator.getDefault().writeLog(IStatus.ERROR, ioe.getMessage(), ioe);
}
}
}
}
private ResourceProperties getRemoteResourceProps(IFile file, GuvnorMetadataProps localProps) {
ResourceProperties remoteProps = null;
try {
IWebDavClient client = WebDavServerCache.getWebDavClient(localProps.getRepository());
if (client == null) {
client = WebDavClientFactory.createClient(new URL(localProps.getRepository()));
WebDavServerCache.cacheWebDavClient(localProps.getRepository(), client);
}
try {
remoteProps = client.queryProperties(localProps.getFullpath());
} catch (WebDavException wde) {
if (wde.getErrorCode() != IResponse.SC_UNAUTHORIZED) {
// If not an authentication failure, we don't know what to do with it
throw wde;
}
boolean retry = PlatformUtils.getInstance().
authenticateForServer(localProps.getRepository(), client);
if (retry) {
remoteProps = client.queryProperties(localProps.getFullpath());
}
}
} catch (Exception e) {
Activator.getDefault().writeLog(IStatus.ERROR, e.getMessage(), e);
}
return remoteProps;
}
@SuppressWarnings("unchecked")
private boolean hasChangedRevision(ISelection selection) {
boolean res = true;
try {
if (!(selection instanceof IStructuredSelection)) {
return false;
}
IStructuredSelection sel = (IStructuredSelection)selection;
for (Iterator<Object> it = sel.iterator(); it.hasNext();) {
Object oneSelection = it.next();
if (oneSelection instanceof IFile) {
GuvnorMetadataProps localProps =
GuvnorMetadataUtils.getGuvnorMetadata((IFile)oneSelection);
if (localProps != null) {
ResourceProperties remoteProps =
getRemoteResourceProps((IFile)oneSelection, localProps);
if (remoteProps == null) {
res = false;
break;
}
if (remoteProps.getRevision().equals(localProps.getRevision())) {
res = false;
break;
}
} else {
res = false;
break;
}
}
}
} catch (Exception e) {
Activator.getDefault().writeLog(IStatus.ERROR, e.getMessage(), e);
res = false;
}
return res;
}
/*
* @see IActionDelegate#selectionChanged(IAction, ISelection)
*/
public void selectionChanged(IAction action, ISelection selection) {
boolean validResourceSet =
(ActionUtils.checkResourceSet(selection, true) && ActionUtils.areFilesDirty(selection))
|| hasChangedRevision(selection);
if (validResourceSet) {
action.setEnabled(true);
selectedItems = (IStructuredSelection)selection;
} else {
action.setEnabled(false);
selectedItems = null;
}
}
}