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
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.repositories.azure;
import com.microsoft.azure.storage.StorageException;
import com.microsoft.azure.storage.LocationMode;
import org.elasticsearch.cloud.azure.blobstore.AzureBlobStore;
import org.elasticsearch.cloud.azure.storage.AzureStorageService.Storage;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.cluster.metadata.SnapshotId;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.blobstore.BlobPath;
import org.elasticsearch.common.blobstore.BlobStore;
import org.elasticsearch.common.inject.Inject;
import org.elasticsearch.common.unit.ByteSizeUnit;
import org.elasticsearch.common.unit.ByteSizeValue;
import org.elasticsearch.index.snapshots.IndexShardRepository;
import org.elasticsearch.repositories.RepositoryName;
import org.elasticsearch.repositories.RepositorySettings;
import org.elasticsearch.repositories.RepositoryVerificationException;
import org.elasticsearch.repositories.blobstore.BlobStoreRepository;
import org.elasticsearch.snapshots.SnapshotCreationException;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.List;
import java.util.Locale;
/**
* Azure file system implementation of the BlobStoreRepository
* <p>
* Azure file system repository supports the following settings:
* <dl>
* <dt>{@code container}</dt><dd>Azure container name. Defaults to elasticsearch-snapshots</dd>
* <dt>{@code base_path}</dt><dd>Specifies the path within bucket to repository data. Defaults to root directory.</dd>
* <dt>{@code chunk_size}</dt><dd>Large file can be divided into chunks. This parameter specifies the chunk size. Defaults to 64mb.</dd>
* <dt>{@code compress}</dt><dd>If set to true metadata files will be stored compressed. Defaults to false.</dd>
* </dl>
*/
public class AzureRepository extends BlobStoreRepository {
public final static String TYPE = "azure";
public final static String CONTAINER_DEFAULT = "elasticsearch-snapshots";
static public final class Repository {
public static final String ACCOUNT = "account";
public static final String LOCATION_MODE = "location_mode";
public static final String CONTAINER = "container";
public static final String CHUNK_SIZE = "chunk_size";
public static final String COMPRESS = "compress";
public static final String BASE_PATH = "base_path";
}
private final AzureBlobStore blobStore;
private final BlobPath basePath;
private ByteSizeValue chunkSize;
private boolean compress;
private final boolean readonly;
@Inject
public AzureRepository(RepositoryName name, RepositorySettings repositorySettings,
IndexShardRepository indexShardRepository,
AzureBlobStore azureBlobStore) throws IOException, URISyntaxException, StorageException {
super(name.getName(), repositorySettings, indexShardRepository);
String container = repositorySettings.settings().get(Repository.CONTAINER,
settings.get(Storage.CONTAINER, CONTAINER_DEFAULT));
this.blobStore = azureBlobStore;
this.chunkSize = repositorySettings.settings().getAsBytesSize(Repository.CHUNK_SIZE,
settings.getAsBytesSize(Storage.CHUNK_SIZE, new ByteSizeValue(64, ByteSizeUnit.MB)));
if (this.chunkSize.getMb() > 64) {
logger.warn("azure repository does not support yet size > 64mb. Fall back to 64mb.");
this.chunkSize = new ByteSizeValue(64, ByteSizeUnit.MB);
}
this.compress = repositorySettings.settings().getAsBoolean(Repository.COMPRESS,
settings.getAsBoolean(Storage.COMPRESS, false));
String modeStr = repositorySettings.settings().get(Repository.LOCATION_MODE, null);
if (modeStr != null) {
LocationMode locationMode = LocationMode.valueOf(modeStr.toUpperCase(Locale.ROOT));
if (locationMode == LocationMode.SECONDARY_ONLY) {
readonly = true;
} else {
readonly = false;
}
} else {
readonly = false;
}
String basePath = repositorySettings.settings().get(Repository.BASE_PATH, null);
if (Strings.hasLength(basePath)) {
// Remove starting / if any
basePath = Strings.trimLeadingCharacter(basePath, '/');
BlobPath path = new BlobPath();
for(String elem : Strings.splitStringToArray(basePath, '/')) {
path = path.add(elem);
}
this.basePath = path;
} else {
this.basePath = BlobPath.cleanPath();
}
logger.debug("using container [{}], chunk_size [{}], compress [{}], base_path [{}]",
container, chunkSize, compress, basePath);
}
/**
* {@inheritDoc}
*/
@Override
protected BlobStore blobStore() {
return blobStore;
}
@Override
protected BlobPath basePath() {
return basePath;
}
/**
* {@inheritDoc}
*/
@Override
protected boolean isCompress() {
return compress;
}
/**
* {@inheritDoc}
*/
@Override
protected ByteSizeValue chunkSize() {
return chunkSize;
}
@Override
public void initializeSnapshot(SnapshotId snapshotId, List<String> indices, MetaData metaData) {
try {
if (!blobStore.doesContainerExist(blobStore.container())) {
logger.debug("container [{}] does not exist. Creating...", blobStore.container());
blobStore.createContainer(blobStore.container());
}
super.initializeSnapshot(snapshotId, indices, metaData);
} catch (StorageException | URISyntaxException e) {
logger.warn("can not initialize container [{}]: [{}]", blobStore.container(), e.getMessage());
throw new SnapshotCreationException(snapshotId, e);
}
}
@Override
public String startVerification() {
if (readonly == false) {
try {
if (!blobStore.doesContainerExist(blobStore.container())) {
logger.debug("container [{}] does not exist. Creating...", blobStore.container());
blobStore.createContainer(blobStore.container());
}
} catch (StorageException | URISyntaxException e) {
logger.warn("can not initialize container [{}]: [{}]", blobStore.container(), e.getMessage());
throw new RepositoryVerificationException(repositoryName, "can not initialize container " + blobStore.container(), e);
}
}
return super.startVerification();
}
@Override
public boolean readOnly() {
return readonly;
}
}
|
