/**
* Copyright (C) 2015-2017 Regents of the University of California.
* @author: Jeff Thompson <jefft0@remap.ucla.edu>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* A copy of the GNU Lesser General Public License is in the file COPYING.
*/
package net.named_data.jndn.tests.repo_ng;
import com.google.protobuf.ByteString;
import java.io.IOException;
import java.nio.ByteBuffer;
import net.named_data.jndn.Data;
import net.named_data.jndn.Face;
import net.named_data.jndn.Interest;
import net.named_data.jndn.InterestFilter;
import net.named_data.jndn.Name;
import net.named_data.jndn.OnData;
import net.named_data.jndn.OnInterestCallback;
import net.named_data.jndn.OnRegisterFailed;
import net.named_data.jndn.OnTimeout;
import net.named_data.jndn.encoding.EncodingException;
import net.named_data.jndn.encoding.ProtobufTlv;
import net.named_data.jndn.security.KeyChain;
import net.named_data.jndn.security.KeyType;
import net.named_data.jndn.security.SecurityException;
import net.named_data.jndn.security.identity.IdentityManager;
import net.named_data.jndn.security.identity.MemoryIdentityStorage;
import net.named_data.jndn.security.identity.MemoryPrivateKeyStorage;
import net.named_data.jndn.security.policy.SelfVerifyPolicyManager;
import net.named_data.jndn.util.Blob;
import net.named_data.jndn.tests.repo_ng.RepoCommandParameterProto
.RepoCommandParameterMessage;
import net.named_data.jndn.tests.repo_ng.RepoCommandResponseProto
.RepoCommandResponseMessage;
import net.named_data.jndn.tests.repo_ng.RepoCommandResponseProto
.RepoCommandResponseMessage.RepoCommandResponse;
/**
* This shows an example of the repo-ng watched prefix insertion protocol,
* described here:
* http://redmine.named-data.net/projects/repo-ng/wiki/Watched_Prefix_Insertion_Protocol
* See main() for more details.
*/
public class WatchedInsertion {
// Convert the int array to a ByteBuffer.
private static ByteBuffer
toBuffer(int[] array)
{
ByteBuffer result = ByteBuffer.allocate(array.length);
for (int i = 0; i < array.length; ++i)
result.put((byte)(array[i] & 0xff));
result.flip();
return result;
}
private static final ByteBuffer DEFAULT_RSA_PUBLIC_KEY_DER = toBuffer(new int[] {
0x30, 0x82, 0x01, 0x22, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01,
0x01, 0x05, 0x00, 0x03, 0x82, 0x01, 0x0f, 0x00, 0x30, 0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01,
0x00, 0xb8, 0x09, 0xa7, 0x59, 0x82, 0x84, 0xec, 0x4f, 0x06, 0xfa, 0x1c, 0xb2, 0xe1, 0x38, 0x93,
0x53, 0xbb, 0x7d, 0xd4, 0xac, 0x88, 0x1a, 0xf8, 0x25, 0x11, 0xe4, 0xfa, 0x1d, 0x61, 0x24, 0x5b,
0x82, 0xca, 0xcd, 0x72, 0xce, 0xdb, 0x66, 0xb5, 0x8d, 0x54, 0xbd, 0xfb, 0x23, 0xfd, 0xe8, 0x8e,
0xaf, 0xa7, 0xb3, 0x79, 0xbe, 0x94, 0xb5, 0xb7, 0xba, 0x17, 0xb6, 0x05, 0xae, 0xce, 0x43, 0xbe,
0x3b, 0xce, 0x6e, 0xea, 0x07, 0xdb, 0xbf, 0x0a, 0x7e, 0xeb, 0xbc, 0xc9, 0x7b, 0x62, 0x3c, 0xf5,
0xe1, 0xce, 0xe1, 0xd9, 0x8d, 0x9c, 0xfe, 0x1f, 0xc7, 0xf8, 0xfb, 0x59, 0xc0, 0x94, 0x0b, 0x2c,
0xd9, 0x7d, 0xbc, 0x96, 0xeb, 0xb8, 0x79, 0x22, 0x8a, 0x2e, 0xa0, 0x12, 0x1d, 0x42, 0x07, 0xb6,
0x5d, 0xdb, 0xe1, 0xf6, 0xb1, 0x5d, 0x7b, 0x1f, 0x54, 0x52, 0x1c, 0xa3, 0x11, 0x9b, 0xf9, 0xeb,
0xbe, 0xb3, 0x95, 0xca, 0xa5, 0x87, 0x3f, 0x31, 0x18, 0x1a, 0xc9, 0x99, 0x01, 0xec, 0xaa, 0x90,
0xfd, 0x8a, 0x36, 0x35, 0x5e, 0x12, 0x81, 0xbe, 0x84, 0x88, 0xa1, 0x0d, 0x19, 0x2a, 0x4a, 0x66,
0xc1, 0x59, 0x3c, 0x41, 0x83, 0x3d, 0x3d, 0xb8, 0xd4, 0xab, 0x34, 0x90, 0x06, 0x3e, 0x1a, 0x61,
0x74, 0xbe, 0x04, 0xf5, 0x7a, 0x69, 0x1b, 0x9d, 0x56, 0xfc, 0x83, 0xb7, 0x60, 0xc1, 0x5e, 0x9d,
0x85, 0x34, 0xfd, 0x02, 0x1a, 0xba, 0x2c, 0x09, 0x72, 0xa7, 0x4a, 0x5e, 0x18, 0xbf, 0xc0, 0x58,
0xa7, 0x49, 0x34, 0x46, 0x61, 0x59, 0x0e, 0xe2, 0x6e, 0x9e, 0xd2, 0xdb, 0xfd, 0x72, 0x2f, 0x3c,
0x47, 0xcc, 0x5f, 0x99, 0x62, 0xee, 0x0d, 0xf3, 0x1f, 0x30, 0x25, 0x20, 0x92, 0x15, 0x4b, 0x04,
0xfe, 0x15, 0x19, 0x1d, 0xdc, 0x7e, 0x5c, 0x10, 0x21, 0x52, 0x21, 0x91, 0x54, 0x60, 0x8b, 0x92,
0x41, 0x02, 0x03, 0x01, 0x00, 0x01
});
// Java uses an unencrypted PKCS #8 PrivateKeyInfo, not a PKCS #1 RSAPrivateKey.
private static final ByteBuffer DEFAULT_RSA_PRIVATE_KEY_DER = toBuffer(new int[] {
0x30, 0x82, 0x04, 0xbf, 0x02, 0x01, 0x00, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7,
0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x04, 0x82, 0x04, 0xa9, 0x30, 0x82, 0x04, 0xa5, 0x02, 0x01,
0x00, 0x02, 0x82, 0x01, 0x01, 0x00, 0xb8, 0x09, 0xa7, 0x59, 0x82, 0x84, 0xec, 0x4f, 0x06, 0xfa,
0x1c, 0xb2, 0xe1, 0x38, 0x93, 0x53, 0xbb, 0x7d, 0xd4, 0xac, 0x88, 0x1a, 0xf8, 0x25, 0x11, 0xe4,
0xfa, 0x1d, 0x61, 0x24, 0x5b, 0x82, 0xca, 0xcd, 0x72, 0xce, 0xdb, 0x66, 0xb5, 0x8d, 0x54, 0xbd,
0xfb, 0x23, 0xfd, 0xe8, 0x8e, 0xaf, 0xa7, 0xb3, 0x79, 0xbe, 0x94, 0xb5, 0xb7, 0xba, 0x17, 0xb6,
0x05, 0xae, 0xce, 0x43, 0xbe, 0x3b, 0xce, 0x6e, 0xea, 0x07, 0xdb, 0xbf, 0x0a, 0x7e, 0xeb, 0xbc,
0xc9, 0x7b, 0x62, 0x3c, 0xf5, 0xe1, 0xce, 0xe1, 0xd9, 0x8d, 0x9c, 0xfe, 0x1f, 0xc7, 0xf8, 0xfb,
0x59, 0xc0, 0x94, 0x0b, 0x2c, 0xd9, 0x7d, 0xbc, 0x96, 0xeb, 0xb8, 0x79, 0x22, 0x8a, 0x2e, 0xa0,
0x12, 0x1d, 0x42, 0x07, 0xb6, 0x5d, 0xdb, 0xe1, 0xf6, 0xb1, 0x5d, 0x7b, 0x1f, 0x54, 0x52, 0x1c,
0xa3, 0x11, 0x9b, 0xf9, 0xeb, 0xbe, 0xb3, 0x95, 0xca, 0xa5, 0x87, 0x3f, 0x31, 0x18, 0x1a, 0xc9,
0x99, 0x01, 0xec, 0xaa, 0x90, 0xfd, 0x8a, 0x36, 0x35, 0x5e, 0x12, 0x81, 0xbe, 0x84, 0x88, 0xa1,
0x0d, 0x19, 0x2a, 0x4a, 0x66, 0xc1, 0x59, 0x3c, 0x41, 0x83, 0x3d, 0x3d, 0xb8, 0xd4, 0xab, 0x34,
0x90, 0x06, 0x3e, 0x1a, 0x61, 0x74, 0xbe, 0x04, 0xf5, 0x7a, 0x69, 0x1b, 0x9d, 0x56, 0xfc, 0x83,
0xb7, 0x60, 0xc1, 0x5e, 0x9d, 0x85, 0x34, 0xfd, 0x02, 0x1a, 0xba, 0x2c, 0x09, 0x72, 0xa7, 0x4a,
0x5e, 0x18, 0xbf, 0xc0, 0x58, 0xa7, 0x49, 0x34, 0x46, 0x61, 0x59, 0x0e, 0xe2, 0x6e, 0x9e, 0xd2,
0xdb, 0xfd, 0x72, 0x2f, 0x3c, 0x47, 0xcc, 0x5f, 0x99, 0x62, 0xee, 0x0d, 0xf3, 0x1f, 0x30, 0x25,
0x20, 0x92, 0x15, 0x4b, 0x04, 0xfe, 0x15, 0x19, 0x1d, 0xdc, 0x7e, 0x5c, 0x10, 0x21, 0x52, 0x21,
0x91, 0x54, 0x60, 0x8b, 0x92, 0x41, 0x02, 0x03, 0x01, 0x00, 0x01, 0x02, 0x82, 0x01, 0x01, 0x00,
0x8a, 0x05, 0xfb, 0x73, 0x7f, 0x16, 0xaf, 0x9f, 0xa9, 0x4c, 0xe5, 0x3f, 0x26, 0xf8, 0x66, 0x4d,
0xd2, 0xfc, 0xd1, 0x06, 0xc0, 0x60, 0xf1, 0x9f, 0xe3, 0xa6, 0xc6, 0x0a, 0x48, 0xb3, 0x9a, 0xca,
0x21, 0xcd, 0x29, 0x80, 0x88, 0x3d, 0xa4, 0x85, 0xa5, 0x7b, 0x82, 0x21, 0x81, 0x28, 0xeb, 0xf2,
0x43, 0x24, 0xb0, 0x76, 0xc5, 0x52, 0xef, 0xc2, 0xea, 0x4b, 0x82, 0x41, 0x92, 0xc2, 0x6d, 0xa6,
0xae, 0xf0, 0xb2, 0x26, 0x48, 0xa1, 0x23, 0x7f, 0x02, 0xcf, 0xa8, 0x90, 0x17, 0xa2, 0x3e, 0x8a,
0x26, 0xbd, 0x6d, 0x8a, 0xee, 0xa6, 0x0c, 0x31, 0xce, 0xc2, 0xbb, 0x92, 0x59, 0xb5, 0x73, 0xe2,
0x7d, 0x91, 0x75, 0xe2, 0xbd, 0x8c, 0x63, 0xe2, 0x1c, 0x8b, 0xc2, 0x6a, 0x1c, 0xfe, 0x69, 0xc0,
0x44, 0xcb, 0x58, 0x57, 0xb7, 0x13, 0x42, 0xf0, 0xdb, 0x50, 0x4c, 0xe0, 0x45, 0x09, 0x8f, 0xca,
0x45, 0x8a, 0x06, 0xfe, 0x98, 0xd1, 0x22, 0xf5, 0x5a, 0x9a, 0xdf, 0x89, 0x17, 0xca, 0x20, 0xcc,
0x12, 0xa9, 0x09, 0x3d, 0xd5, 0xf7, 0xe3, 0xeb, 0x08, 0x4a, 0xc4, 0x12, 0xc0, 0xb9, 0x47, 0x6c,
0x79, 0x50, 0x66, 0xa3, 0xf8, 0xaf, 0x2c, 0xfa, 0xb4, 0x6b, 0xec, 0x03, 0xad, 0xcb, 0xda, 0x24,
0x0c, 0x52, 0x07, 0x87, 0x88, 0xc0, 0x21, 0xf3, 0x02, 0xe8, 0x24, 0x44, 0x0f, 0xcd, 0xa0, 0xad,
0x2f, 0x1b, 0x79, 0xab, 0x6b, 0x49, 0x4a, 0xe6, 0x3b, 0xd0, 0xad, 0xc3, 0x48, 0xb9, 0xf7, 0xf1,
0x34, 0x09, 0xeb, 0x7a, 0xc0, 0xd5, 0x0d, 0x39, 0xd8, 0x45, 0xce, 0x36, 0x7a, 0xd8, 0xde, 0x3c,
0xb0, 0x21, 0x96, 0x97, 0x8a, 0xff, 0x8b, 0x23, 0x60, 0x4f, 0xf0, 0x3d, 0xd7, 0x8f, 0xf3, 0x2c,
0xcb, 0x1d, 0x48, 0x3f, 0x86, 0xc4, 0xa9, 0x00, 0xf2, 0x23, 0x2d, 0x72, 0x4d, 0x66, 0xa5, 0x01,
0x02, 0x81, 0x81, 0x00, 0xdc, 0x4f, 0x99, 0x44, 0x0d, 0x7f, 0x59, 0x46, 0x1e, 0x8f, 0xe7, 0x2d,
0x8d, 0xdd, 0x54, 0xc0, 0xf7, 0xfa, 0x46, 0x0d, 0x9d, 0x35, 0x03, 0xf1, 0x7c, 0x12, 0xf3, 0x5a,
0x9d, 0x83, 0xcf, 0xdd, 0x37, 0x21, 0x7c, 0xb7, 0xee, 0xc3, 0x39, 0xd2, 0x75, 0x8f, 0xb2, 0x2d,
0x6f, 0xec, 0xc6, 0x03, 0x55, 0xd7, 0x00, 0x67, 0xd3, 0x9b, 0xa2, 0x68, 0x50, 0x6f, 0x9e, 0x28,
0xa4, 0x76, 0x39, 0x2b, 0xb2, 0x65, 0xcc, 0x72, 0x82, 0x93, 0xa0, 0xcf, 0x10, 0x05, 0x6a, 0x75,
0xca, 0x85, 0x35, 0x99, 0xb0, 0xa6, 0xc6, 0xef, 0x4c, 0x4d, 0x99, 0x7d, 0x2c, 0x38, 0x01, 0x21,
0xb5, 0x31, 0xac, 0x80, 0x54, 0xc4, 0x18, 0x4b, 0xfd, 0xef, 0xb3, 0x30, 0x22, 0x51, 0x5a, 0xea,
0x7d, 0x9b, 0xb2, 0x9d, 0xcb, 0xba, 0x3f, 0xc0, 0x1a, 0x6b, 0xcd, 0xb0, 0xe6, 0x2f, 0x04, 0x33,
0xd7, 0x3a, 0x49, 0x71, 0x02, 0x81, 0x81, 0x00, 0xd5, 0xd9, 0xc9, 0x70, 0x1a, 0x13, 0xb3, 0x39,
0x24, 0x02, 0xee, 0xb0, 0xbb, 0x84, 0x17, 0x12, 0xc6, 0xbd, 0x65, 0x73, 0xe9, 0x34, 0x5d, 0x43,
0xff, 0xdc, 0xf8, 0x55, 0xaf, 0x2a, 0xb9, 0xe1, 0xfa, 0x71, 0x65, 0x4e, 0x50, 0x0f, 0xa4, 0x3b,
0xe5, 0x68, 0xf2, 0x49, 0x71, 0xaf, 0x15, 0x88, 0xd7, 0xaf, 0xc4, 0x9d, 0x94, 0x84, 0x6b, 0x5b,
0x10, 0xd5, 0xc0, 0xaa, 0x0c, 0x13, 0x62, 0x99, 0xc0, 0x8b, 0xfc, 0x90, 0x0f, 0x87, 0x40, 0x4d,
0x58, 0x88, 0xbd, 0xe2, 0xba, 0x3e, 0x7e, 0x2d, 0xd7, 0x69, 0xa9, 0x3c, 0x09, 0x64, 0x31, 0xb6,
0xcc, 0x4d, 0x1f, 0x23, 0xb6, 0x9e, 0x65, 0xd6, 0x81, 0xdc, 0x85, 0xcc, 0x1e, 0xf1, 0x0b, 0x84,
0x38, 0xab, 0x93, 0x5f, 0x9f, 0x92, 0x4e, 0x93, 0x46, 0x95, 0x6b, 0x3e, 0xb6, 0xc3, 0x1b, 0xd7,
0x69, 0xa1, 0x0a, 0x97, 0x37, 0x78, 0xed, 0xd1, 0x02, 0x81, 0x80, 0x33, 0x18, 0xc3, 0x13, 0x65,
0x8e, 0x03, 0xc6, 0x9f, 0x90, 0x00, 0xae, 0x30, 0x19, 0x05, 0x6f, 0x3c, 0x14, 0x6f, 0xea, 0xf8,
0x6b, 0x33, 0x5e, 0xee, 0xc7, 0xf6, 0x69, 0x2d, 0xdf, 0x44, 0x76, 0xaa, 0x32, 0xba, 0x1a, 0x6e,
0xe6, 0x18, 0xa3, 0x17, 0x61, 0x1c, 0x92, 0x2d, 0x43, 0x5d, 0x29, 0xa8, 0xdf, 0x14, 0xd8, 0xff,
0xdb, 0x38, 0xef, 0xb8, 0xb8, 0x2a, 0x96, 0x82, 0x8e, 0x68, 0xf4, 0x19, 0x8c, 0x42, 0xbe, 0xcc,
0x4a, 0x31, 0x21, 0xd5, 0x35, 0x6c, 0x5b, 0xa5, 0x7c, 0xff, 0xd1, 0x85, 0x87, 0x28, 0xdc, 0x97,
0x75, 0xe8, 0x03, 0x80, 0x1d, 0xfd, 0x25, 0x34, 0x41, 0x31, 0x21, 0x12, 0x87, 0xe8, 0x9a, 0xb7,
0x6a, 0xc0, 0xc4, 0x89, 0x31, 0x15, 0x45, 0x0d, 0x9c, 0xee, 0xf0, 0x6a, 0x2f, 0xe8, 0x59, 0x45,
0xc7, 0x7b, 0x0d, 0x6c, 0x55, 0xbb, 0x43, 0xca, 0xc7, 0x5a, 0x01, 0x02, 0x81, 0x81, 0x00, 0xab,
0xf4, 0xd5, 0xcf, 0x78, 0x88, 0x82, 0xc2, 0xdd, 0xbc, 0x25, 0xe6, 0xa2, 0xc1, 0xd2, 0x33, 0xdc,
0xef, 0x0a, 0x97, 0x2b, 0xdc, 0x59, 0x6a, 0x86, 0x61, 0x4e, 0xa6, 0xc7, 0x95, 0x99, 0xa6, 0xa6,
0x55, 0x6c, 0x5a, 0x8e, 0x72, 0x25, 0x63, 0xac, 0x52, 0xb9, 0x10, 0x69, 0x83, 0x99, 0xd3, 0x51,
0x6c, 0x1a, 0xb3, 0x83, 0x6a, 0xff, 0x50, 0x58, 0xb7, 0x28, 0x97, 0x13, 0xe2, 0xba, 0x94, 0x5b,
0x89, 0xb4, 0xea, 0xba, 0x31, 0xcd, 0x78, 0xe4, 0x4a, 0x00, 0x36, 0x42, 0x00, 0x62, 0x41, 0xc6,
0x47, 0x46, 0x37, 0xea, 0x6d, 0x50, 0xb4, 0x66, 0x8f, 0x55, 0x0c, 0xc8, 0x99, 0x91, 0xd5, 0xec,
0xd2, 0x40, 0x1c, 0x24, 0x7d, 0x3a, 0xff, 0x74, 0xfa, 0x32, 0x24, 0xe0, 0x11, 0x2b, 0x71, 0xad,
0x7e, 0x14, 0xa0, 0x77, 0x21, 0x68, 0x4f, 0xcc, 0xb6, 0x1b, 0xe8, 0x00, 0x49, 0x13, 0x21, 0x02,
0x81, 0x81, 0x00, 0xb6, 0x18, 0x73, 0x59, 0x2c, 0x4f, 0x92, 0xac, 0xa2, 0x2e, 0x5f, 0xb6, 0xbe,
0x78, 0x5d, 0x47, 0x71, 0x04, 0x92, 0xf0, 0xd7, 0xe8, 0xc5, 0x7a, 0x84, 0x6b, 0xb8, 0xb4, 0x30,
0x1f, 0xd8, 0x0d, 0x58, 0xd0, 0x64, 0x80, 0xa7, 0x21, 0x1a, 0x48, 0x00, 0x37, 0xd6, 0x19, 0x71,
0xbb, 0x91, 0x20, 0x9d, 0xe2, 0xc3, 0xec, 0xdb, 0x36, 0x1c, 0xca, 0x48, 0x7d, 0x03, 0x32, 0x74,
0x1e, 0x65, 0x73, 0x02, 0x90, 0x73, 0xd8, 0x3f, 0xb5, 0x52, 0x35, 0x79, 0x1c, 0xee, 0x93, 0xa3,
0x32, 0x8b, 0xed, 0x89, 0x98, 0xf1, 0x0c, 0xd8, 0x12, 0xf2, 0x89, 0x7f, 0x32, 0x23, 0xec, 0x67,
0x66, 0x52, 0x83, 0x89, 0x99, 0x5e, 0x42, 0x2b, 0x42, 0x4b, 0x84, 0x50, 0x1b, 0x3e, 0x47, 0x6d,
0x74, 0xfb, 0xd1, 0xa6, 0x10, 0x20, 0x6c, 0x6e, 0xbe, 0x44, 0x3f, 0xb9, 0xfe, 0xbc, 0x8d, 0xda,
0xcb, 0xea, 0x8f
});
public interface SimpleCallback {
void exec();
}
/**
* Send a command interest for the repo to start watching the given watchPrefix.
* @param face The Face used to call makeCommandInterest and expressInterest.
* @param repoCommandPrefix The repo command prefix.
* @param watchPrefix The prefix that the repo will watch.
* @param onRepoWatchStarted When the start watch command successfully returns,
* this calls onRepoWatchStarted.exec().
* @param onFailed If the command fails for any reason, this prints an error
* and calls onFailed.exec().
*/
static void
startRepoWatch
(Face face, Name repoCommandPrefix, Name watchPrefix,
final SimpleCallback onRepoWatchStarted, final SimpleCallback onFailed)
{
// Construct a RepoCommandParameterMessage using the structure in
// RepoCommandParameterProto.java which was produced by protoc.
RepoCommandParameterMessage.Builder builder =
RepoCommandParameterMessage.newBuilder();
RepoCommandParameterMessage.RepoCommandParameter.Builder parameterBuilder =
builder.getRepoCommandParameterBuilder();
// Add the Name.
RepoCommandParameterMessage.Name.Builder nameBuilder =
parameterBuilder.getNameBuilder();
for (int i = 0; i < watchPrefix.size(); ++i)
nameBuilder.addComponent(ByteString.copyFrom(watchPrefix.get(i).getValue().buf()));
try {
// Create the command interest.
Interest interest = new Interest(new Name(repoCommandPrefix)
.append("watch").append("start").append(ProtobufTlv.encode(builder.build())));
face.makeCommandInterest(interest);
// Send the command interest and get the response or timeout.
face.expressInterest
(interest,
new OnData() {
public void onData(Interest interest, Data data) {
processStartRepoWatchResponse
(data.getContent(), onRepoWatchStarted, onFailed);
}},
new OnTimeout() {
public void onTimeout(Interest interest) {
System.out.println("Start repo watch command timeout");
onFailed.exec();
}});
}
catch (Exception e) {
System.out.println("exception: " + e.getMessage());
onFailed.exec();
}
}
static void
processStartRepoWatchResponse
(Blob encodedResponse, final SimpleCallback onRepoWatchStarted,
final SimpleCallback onFailed)
{
RepoCommandResponseMessage.Builder decodedResponse =
RepoCommandResponseMessage.newBuilder();
try {
ProtobufTlv.decode(decodedResponse, encodedResponse);
} catch (EncodingException ex) {
System.out.println
("Cannot decode the repo command response " + ex.getMessage());
onFailed.exec();
}
RepoCommandResponse response = decodedResponse.getRepoCommandResponse();
if (response.getStatusCode() == 100)
onRepoWatchStarted.exec();
else {
System.out.println("Got repo command error code " + response.getStatusCode());
onFailed.exec();
}
}
/**
* Send a command interest for the repo to stop watching the given watchPrefix.
* @param face The Face used to call makeCommandInterest and expressInterest.
* @param repoCommandPrefix The repo command prefix.
* @param watchPrefix The prefix that the repo will stop watching.
* @param onRepoWatchStopped When the stop watch command successfully returns,
* this calls onRepoWatchStarted.exec().
* @param onFailed If the command fails for any reason, this prints an error
* and calls onFailed.exec().
*/
static void
stopRepoWatch
(Face face, Name repoCommandPrefix, Name watchPrefix,
final SimpleCallback onRepoWatchStopped, final SimpleCallback onFailed)
{
// Construct a RepoCommandParameterMessage using the structure in
// RepoCommandParameterProto.java which was produced by protoc.
RepoCommandParameterMessage.Builder builder =
RepoCommandParameterMessage.newBuilder();
RepoCommandParameterMessage.RepoCommandParameter.Builder parameterBuilder =
builder.getRepoCommandParameterBuilder();
// Add the Name.
RepoCommandParameterMessage.Name.Builder nameBuilder =
parameterBuilder.getNameBuilder();
for (int i = 0; i < watchPrefix.size(); ++i)
nameBuilder.addComponent(ByteString.copyFrom(watchPrefix.get(i).getValue().buf()));
try {
// Create the command interest.
Interest interest = new Interest(new Name(repoCommandPrefix)
.append("watch").append("stop").append(ProtobufTlv.encode(builder.build())));
face.makeCommandInterest(interest);
// Send the command interest and get the response or timeout.
face.expressInterest
(interest,
new OnData() {
public void onData(Interest interest, Data data) {
processStopRepoWatchResponse
(data.getContent(), onRepoWatchStopped, onFailed);
}},
new OnTimeout() {
public void onTimeout(Interest interest) {
System.out.println("Start repo watch command timeout");
onFailed.exec();
}});
}
catch (Exception e) {
System.out.println("exception: " + e.getMessage());
onFailed.exec();
}
}
static void
processStopRepoWatchResponse
(Blob encodedResponse, final SimpleCallback onRepoWatchStopped,
final SimpleCallback onFailed)
{
RepoCommandResponseMessage.Builder decodedResponse =
RepoCommandResponseMessage.newBuilder();
try {
ProtobufTlv.decode(decodedResponse, encodedResponse);
} catch (EncodingException ex) {
System.out.println
("Cannot decode the repo command response " + ex.getMessage());
onFailed.exec();
}
RepoCommandResponse response = decodedResponse.getRepoCommandResponse();
if (response.getStatusCode() == 101)
onRepoWatchStopped.exec();
else {
System.out.println("Got repo command error code " + response.getStatusCode());
onFailed.exec();
}
}
/**
* This is an example class to supply the data requested by the repo-ng
* watched prefix process. For you application, you would supply data in a
* different way. Repo-ng sends interests for the watchPrefix given to
* startRepoWatch(). (The interest also has Exclude selectors but for
* simplicity we ignore them and assume that the exclude values increase along
* with the segment numbers that we send.) This sends data packets where the
* name has the prefix plus increasing segment numbers up to a maximum.
*/
static class SendSegments implements OnInterestCallback {
SendSegments
(KeyChain keyChain, Name certificateName, final SimpleCallback onFinished)
{
keyChain_ = keyChain;
certificateName_ = certificateName;
onFinished_ = onFinished;
segment_ = -1;
}
/**
* This is the onInterest callback to append the next segment number to the
* prefix and send a new data packet. If the last packet is sent, then call
* onFinished_.exec().
*/
public void onInterest
(Name prefix, Interest interest, Face face, long interestFilterId,
InterestFilter filter)
{
long maxSegment = 2;
if (segment_ >= maxSegment)
// We have already called onFinished_.exec().
return;
System.out.println("Got interest " + interest.toUri());
// Make and sign a Data packet with the interest name.
segment_ += 1;
Data data = new Data(new Name(prefix).appendSegment(segment_));
String content = "Segment number " + segment_;
data.setContent(new Blob(content));
try {
keyChain_.sign(data, certificateName_);
} catch (SecurityException ex) {
// We don't expect this to happen
System.out.println("Error while signing the data " + ex.getMessage());
return;
}
try {
face.putData(data);
} catch (IOException ex) {
// We don't expect this to happen
System.out.println("Error while sending the data " + ex.getMessage());
return;
}
System.out.println("Sent data packet " + data.getName().toUri());
if (segment_ >= maxSegment)
// We sent the final data packet.
onFinished_.exec();
}
private final KeyChain keyChain_;
private final Name certificateName_;
private final SimpleCallback onFinished_;
private long segment_;
}
/**
* Call startRepoWatch and register a prefix so that SendSegments will answer
* interests from the repo to send data packets for the watched prefix. When
* all the data is sent (or an error), call stopRepoWatch. This assumes that
* repo-ng is already running (e.g. `sudo ndn-repo-ng`).
*/
public static void
main(String[] args) throws EncodingException
{
try {
final Name repoCommandPrefix = new Name("/example/repo/1");
final Name repoDataPrefix = new Name("/example/data/1");
long nowMilliseconds = System.currentTimeMillis();
final Name watchPrefix = new Name(repoDataPrefix).append("testwatch")
.appendVersion(nowMilliseconds);
// The default Face connects to the local NFD.
final Face face = new Face();
// For now, when setting face.setCommandSigningInfo, use a key chain with
// a default private key instead of the system default key chain. This
// is OK for now because NFD is configured to skip verification, so it
// ignores the system default key chain.
// On a platform which supports it, it would be better to use the default
// KeyChain constructor.
MemoryIdentityStorage identityStorage = new MemoryIdentityStorage();
MemoryPrivateKeyStorage privateKeyStorage = new MemoryPrivateKeyStorage();
KeyChain keyChain = new KeyChain
(new IdentityManager(identityStorage, privateKeyStorage),
new SelfVerifyPolicyManager(identityStorage));
keyChain.setFace(face);
// Initialize the storage.
Name keyName = new Name("/testname/DSK-123");
Name certificateName = keyName.getSubName(0, keyName.size() - 1).append
("KEY").append(keyName.get(-1)).append("ID-CERT").append("0");
identityStorage.addKey(keyName, KeyType.RSA, new Blob(DEFAULT_RSA_PUBLIC_KEY_DER, false));
privateKeyStorage.setKeyPairForKeyName
(keyName, KeyType.RSA, DEFAULT_RSA_PUBLIC_KEY_DER, DEFAULT_RSA_PRIVATE_KEY_DER);
face.setCommandSigningInfo(keyChain, certificateName);
final boolean[] enabled = new boolean[] { true };
// Register the prefix and start the repo watch at the same time.
SendSegments sendSegments = new SendSegments
(keyChain, certificateName,
new SimpleCallback() {
public void exec() {
stopRepoWatchAndQuit(face, repoCommandPrefix, watchPrefix, enabled);
}});
System.out.println("Register prefix " + watchPrefix.toUri());
face.registerPrefix
(watchPrefix, sendSegments,
new OnRegisterFailed() {
public void onRegisterFailed(Name prefix) {
enabled[0] = false;
System.out.println("Register failed for prefix " + prefix.toUri());
}});
startRepoWatch
(face, repoCommandPrefix, watchPrefix,
new SimpleCallback() {
public void exec() {
System.out.println("Watch started for " + watchPrefix.toUri());
}},
new SimpleCallback() {
public void exec() {
stopRepoWatchAndQuit(face, repoCommandPrefix, watchPrefix, enabled);
}});
// Loop calling processEvents until a callback sets enabled[0] = false.
while (enabled[0]) {
face.processEvents();
// We need to sleep for a few milliseconds so we don't use 100% of
// the CPU.
Thread.sleep(5);
}
}
catch (Exception e) {
System.out.println("exception: " + e.getMessage());
}
}
static void
stopRepoWatchAndQuit
(Face face, Name repoCommandPrefix, final Name watchPrefix,
final boolean[] enabled)
{
stopRepoWatch
(face, repoCommandPrefix, watchPrefix,
new SimpleCallback() {
public void exec() {
enabled[0] = false;
System.out.println("Watch stopped for " + watchPrefix.toUri());
}},
new SimpleCallback() {
public void exec() {
enabled[0] = false;
System.out.println("stopRepoWatch failed.");
}});
}
}