1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/*******************************************************************************
* Copyright (c) 2007 IBM Corporation and others. All rights reserved. This
* program and the accompanying materials are made available under the terms of
* the Eclipse Public License v1.0 which accompanies this distribution, and is
* available at http://www.eclipse.org/legal/epl-v10.html
*
* Contributors: IBM Corporation - initial API and implementation Stefan Liebig -
* random tweaks
******************************************************************************/
package org.eclipse.equinox.internal.p2.artifact.repository;
import java.io.IOException;
import java.io.OutputStream;
import org.eclipse.core.runtime.*;
import org.eclipse.ecf.filetransfer.*;
import org.eclipse.ecf.filetransfer.events.*;
import org.eclipse.ecf.filetransfer.identity.FileCreateException;
import org.eclipse.ecf.filetransfer.identity.FileIDFactory;
import org.eclipse.ecf.filetransfer.service.IRetrieveFileTransferFactory;
import org.eclipse.equinox.internal.p2.core.helpers.LogHelper;
import org.eclipse.equinox.internal.provisional.p2.artifact.repository.IStateful;
import org.osgi.util.tracker.ServiceTracker;
/**
* A transport implementation that uses ECF file transfer API.
*/
public class ECFTransport extends Transport {
/**
* The singleton transport instance.
*/
private static ECFTransport instance;
private final ServiceTracker retrievalFactoryTracker;
/**
* Returns an initialized instance of ECFTransport
*/
public static synchronized ECFTransport getInstance() {
if (instance == null) {
instance = new ECFTransport();
}
return instance;
}
/**
* Private to avoid client instantiation.
*/
private ECFTransport() {
retrievalFactoryTracker = new ServiceTracker(Activator.getContext(), IRetrieveFileTransferFactory.class.getName(), null);
retrievalFactoryTracker.open();
}
protected IStatus convertToStatus(Exception failure) {
if (failure == null)
return Status.OK_STATUS;
if (failure instanceof UserCancelledException)
return new Status(IStatus.CANCEL, Activator.ID, failure.getMessage(), failure);
return new Status(IStatus.ERROR, Activator.ID, "error during transfer", failure);
}
public IStatus download(String toDownload, OutputStream target, IProgressMonitor monitor) {
IRetrieveFileTransferFactory factory = (IRetrieveFileTransferFactory) retrievalFactoryTracker.getService();
if (factory == null)
return statusOn(target, new Status(IStatus.ERROR, Activator.ID, "ECF Transfer manager not available"));
return transfer(factory.newInstance(), toDownload, target, monitor);
}
private IStatus transfer(final IRetrieveFileTransferContainerAdapter retrievalContainer, final String toDownload, final OutputStream target, final IProgressMonitor monitor) {
final IStatus[] result = new IStatus[1];
IFileTransferListener listener = new IFileTransferListener() {
public void handleTransferEvent(IFileTransferEvent event) {
if (event instanceof IIncomingFileTransferReceiveStartEvent) {
IIncomingFileTransferReceiveStartEvent rse = (IIncomingFileTransferReceiveStartEvent) event;
try {
if (target != null) {
rse.receive(target);
}
} catch (IOException e) {
IStatus status = convertToStatus(e);
synchronized (result) {
result[0] = status;
result.notify();
}
}
}
if (event instanceof IIncomingFileTransferReceiveDataEvent) {
IIncomingFileTransfer source = ((IIncomingFileTransferReceiveDataEvent) event).getSource();
if (monitor != null) {
if (monitor.isCanceled())
source.cancel();
}
}
if (event instanceof IIncomingFileTransferReceiveDoneEvent) {
IStatus status = convertToStatus(((IIncomingFileTransferReceiveDoneEvent) event).getException());
synchronized (result) {
result[0] = status;
result.notify();
}
}
}
};
try {
retrievalContainer.sendRetrieveRequest(FileIDFactory.getDefault().createFileID(retrievalContainer.getRetrieveNamespace(), toDownload), listener, null);
} catch (IncomingFileTransferException e) {
return statusOn(target, new Status(IStatus.ERROR, Activator.ID, "error during transfer", e));
} catch (FileCreateException e) {
return statusOn(target, new Status(IStatus.ERROR, Activator.ID, "error during transfer - could not create file", e));
}
synchronized (result) {
while (result[0] == null) {
boolean logged = false;
try {
result.wait();
} catch (InterruptedException e) {
if (!logged)
LogHelper.log(new Status(IStatus.WARNING, Activator.ID, "Unexpected interrupt while waiting on ECF transfer", e)); //$NON-NLS-1$
}
}
}
return statusOn(target, result[0]);
}
private static IStatus statusOn(OutputStream target, IStatus status) {
if (target instanceof IStateful)
((IStateful) target).setStatus(status);
return status;
}
}
|
