/
TokenAspect.java
179 lines (158 loc) · 6.02 KB
/
TokenAspect.java
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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.hadoop.hdfs.web;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.URI;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.DelegationTokenRenewer;
import org.apache.hadoop.fs.DelegationTokenRenewer.Renewable;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.hdfs.HAUtilClient;
import org.apache.hadoop.hdfs.security.token.delegation.DelegationTokenIdentifier;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.security.SecurityUtil;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.security.token.TokenRenewer;
import org.apache.hadoop.security.token.delegation.AbstractDelegationTokenSelector;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.annotations.VisibleForTesting;
/**
* This class implements the aspects that relate to delegation tokens for all
* HTTP-based file system.
*/
final class TokenAspect<T extends FileSystem & Renewable> {
@InterfaceAudience.Private
public static class TokenManager extends TokenRenewer {
@Override
public void cancel(Token<?> token, Configuration conf) throws IOException {
getInstance(token, conf).cancelDelegationToken(token);
}
@Override
public boolean handleKind(Text kind) {
return kind.equals(WebHdfsConstants.WEBHDFS_TOKEN_KIND)
|| kind.equals(WebHdfsConstants.SWEBHDFS_TOKEN_KIND);
}
@Override
public boolean isManaged(Token<?> token) throws IOException {
return true;
}
@Override
public long renew(Token<?> token, Configuration conf) throws IOException {
return getInstance(token, conf).renewDelegationToken(token);
}
private TokenManagementDelegator getInstance(Token<?> token,
Configuration conf)
throws IOException {
final URI uri;
final String scheme = getSchemeByKind(token.getKind());
if (HAUtilClient.isTokenForLogicalUri(token)) {
uri = HAUtilClient.getServiceUriFromToken(scheme, token);
} else {
final InetSocketAddress address = SecurityUtil.getTokenServiceAddr
(token);
uri = URI.create(scheme + "://" + NetUtils.getHostPortString(address));
}
return (TokenManagementDelegator) FileSystem.get(uri, conf);
}
private static String getSchemeByKind(Text kind) {
if (kind.equals(WebHdfsConstants.WEBHDFS_TOKEN_KIND)) {
return WebHdfsConstants.WEBHDFS_SCHEME;
} else if (kind.equals(WebHdfsConstants.SWEBHDFS_TOKEN_KIND)) {
return WebHdfsConstants.SWEBHDFS_SCHEME;
} else {
throw new IllegalArgumentException("Unsupported scheme");
}
}
}
private static class DTSelecorByKind extends
AbstractDelegationTokenSelector<DelegationTokenIdentifier> {
public DTSelecorByKind(final Text kind) {
super(kind);
}
}
/**
* Callbacks for token management
*/
interface TokenManagementDelegator {
void cancelDelegationToken(final Token<?> token) throws IOException;
long renewDelegationToken(final Token<?> token) throws IOException;
}
private DelegationTokenRenewer.RenewAction<?> action;
private DelegationTokenRenewer dtRenewer = null;
private final DTSelecorByKind dtSelector;
private final T fs;
private boolean hasInitedToken;
private final Logger LOG;
private final Text serviceName;
TokenAspect(T fs, final Text serviceName, final Text kind) {
this.LOG = LoggerFactory.getLogger(fs.getClass());
this.fs = fs;
this.dtSelector = new DTSelecorByKind(kind);
this.serviceName = serviceName;
}
synchronized void ensureTokenInitialized() throws IOException {
// we haven't inited yet, or we used to have a token but it expired
if (!hasInitedToken || (action != null && !action.isValid())) {
//since we don't already have a token, go get one
Token<?> token = fs.getDelegationToken(null);
// security might be disabled
if (token != null) {
fs.setDelegationToken(token);
addRenewAction(fs);
if (LOG.isDebugEnabled()) {
LOG.debug("Created new DT for {}", token.getService());
}
}
hasInitedToken = true;
}
}
public synchronized void reset() {
hasInitedToken = false;
}
synchronized void initDelegationToken(UserGroupInformation ugi) {
Token<?> token = selectDelegationToken(ugi);
if (token != null) {
if (LOG.isDebugEnabled()) {
LOG.debug("Found existing DT for {}", token.getService());
}
fs.setDelegationToken(token);
hasInitedToken = true;
}
}
synchronized void removeRenewAction() throws IOException {
if (dtRenewer != null) {
dtRenewer.removeRenewAction(fs);
}
}
@VisibleForTesting
Token<DelegationTokenIdentifier> selectDelegationToken(
UserGroupInformation ugi) {
return dtSelector.selectToken(serviceName, ugi.getTokens());
}
private synchronized void addRenewAction(final T webhdfs) {
if (dtRenewer == null) {
dtRenewer = DelegationTokenRenewer.getInstance();
}
action = dtRenewer.addRenewAction(webhdfs);
}
}