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Allow differentiating blob stores by buckets #378

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Merged
gaul merged 1 commit into from
Oct 20, 2021
Merged

Allow differentiating blob stores by buckets #378

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81 changes: 71 additions & 10 deletions src/main/java/org/gaul/s3proxy/Main.java
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Original file line number Diff line number Diff line change
Expand Up @@ -23,10 +23,15 @@
import java.io.InputStream;
import java.io.PrintStream;
import java.nio.charset.StandardCharsets;
import java.nio.file.FileSystems;
import java.nio.file.PathMatcher;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
Expand Down Expand Up @@ -103,6 +108,11 @@ public static void main(String[] args) throws Exception {
1, 20, 60 * 1000, factory);
ImmutableMap.Builder<String, Map.Entry<String, BlobStore>> locators =
ImmutableMap.builder();
ImmutableMap.Builder<String, List<Map.Entry<PathMatcher,
BlobStore>>> globLocators = ImmutableMap.builder();
Map<String, ImmutableList.Builder<Map.Entry<PathMatcher, BlobStore>>>
globBuilders = new HashMap<>();
Set<String> parsedIdentities = new HashSet<>();
for (File propertiesFile : options.propertiesFiles) {
Properties properties = new Properties();
try (InputStream is = new FileInputStream(propertiesFile)) {
Expand All @@ -117,14 +127,35 @@ public static void main(String[] args) throws Exception {

String s3ProxyAuthorizationString = properties.getProperty(
S3ProxyConstants.PROPERTY_AUTHORIZATION);
ImmutableList.Builder<String> locatorBuckets =
new ImmutableList.Builder<>();

String localIdentity = "";
if (AuthenticationType.fromString(s3ProxyAuthorizationString) !=
AuthenticationType.NONE) {
String localIdentity = properties.getProperty(
localIdentity = properties.getProperty(
S3ProxyConstants.PROPERTY_IDENTITY);
String localCredential = properties.getProperty(
S3ProxyConstants.PROPERTY_CREDENTIAL);
locators.put(localIdentity, Maps.immutableEntry(
localCredential, blobStore));
if (parsedIdentities.add(localIdentity)) {
locators.put(localIdentity,
Maps.immutableEntry(localCredential, blobStore));
}
}
ImmutableList.Builder<Map.Entry<PathMatcher, BlobStore>>
globBuilder = globBuilders.get(localIdentity);
if (globBuilder == null) {
globBuilder = new ImmutableList.Builder<>();
globBuilders.put(localIdentity, globBuilder);
}
for (String key : properties.stringPropertyNames()) {
if (key.startsWith(S3ProxyConstants.PROPERTY_BUCKET_LOCATOR)) {
locatorBuckets.add(properties.getProperty(key));
globBuilder.add(Maps.immutableEntry(
FileSystems.getDefault().getPathMatcher(
"glob:" + properties.getProperty(key)),
blobStore));
}
}

S3Proxy.Builder s3ProxyBuilder2 = S3Proxy.Builder
Expand All @@ -149,21 +180,51 @@ public static void main(String[] args) throws Exception {
throw e;
}

for (Map.Entry<String, ImmutableList.Builder<Map.Entry<PathMatcher,
BlobStore>>> entry : globBuilders.entrySet()) {
globLocators.put(entry.getKey(), entry.getValue().build());
}

final Map<String, Map.Entry<String, BlobStore>> locator =
locators.build();
final Map<String, List<Map.Entry<PathMatcher, BlobStore>>>
globLocator = globLocators.build();
if (!locator.isEmpty()) {
s3Proxy.setBlobStoreLocator(new BlobStoreLocator() {
@Override
public Map.Entry<String, BlobStore> locateBlobStore(
String identity, String container, String blob) {
if (identity == null) {
if (locator.size() == 1) {
return locator.entrySet().iterator().next()
.getValue();
Map.Entry<String, BlobStore> locatorEntry =
locator.get(identity);
List<Map.Entry<PathMatcher, BlobStore>> globEntries =
globLocator.get(identity);
if (globEntries != null) {
for (Map.Entry<PathMatcher, BlobStore> entry :
globLocator.get(identity)) {
if (entry.getKey().matches(FileSystems.getDefault()
.getPath(container))) {
return Maps.immutableEntry(
locatorEntry.getKey(),
entry.getValue());
}
}
}
// Check if the anonymous access globs were configured
globEntries = globLocator.get("");
if (globEntries != null) {
for (Map.Entry<PathMatcher,
BlobStore> entry :
globEntries) {
if (entry.getKey().matches(FileSystems.getDefault()
.getPath(container))) {
return Maps.immutableEntry(
locatorEntry.getKey(),
entry.getValue());
}
}
throw new IllegalArgumentException(
"cannot use anonymous access with multiple" +
" backends");
}
if (identity == null) {
return locator.entrySet().iterator().next().getValue();
}
return locator.get(identity);
}
Expand Down
12 changes: 12 additions & 0 deletions src/main/java/org/gaul/s3proxy/S3ProxyConstants.java
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Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,18 @@ public final class S3ProxyConstants {
"s3proxy.max-single-part-object-size";
public static final String PROPERTY_V4_MAX_NON_CHUNKED_REQUEST_SIZE =
"s3proxy.v4-max-non-chunked-request-size";
/** Used to locate blobstores by specified bucket names. Each property
* file should contain a list of buckets associated with it, e.g.
* s3proxy.bucket-locator.1 = data
* s3proxy.bucket-locator.2 = metadata
* s3proxy.bucket-locator.3 = other
* When a request is made for the specified bucket, the backend defined
* in that properties file is used. This allows using the same
* credentials in multiple properties file and select the backend based
* on the bucket names.
*/
public static final String PROPERTY_BUCKET_LOCATOR =
"s3proxy.bucket-locator";
/** When true, model eventual consistency using two storage backends. */
public static final String PROPERTY_EVENTUAL_CONSISTENCY =
"s3proxy.eventual-consistency";
Expand Down