AtaraxiaDev/cryptomator-android
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feat(S3): provide bucketExists() method

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This commit is contained in:
Manuel Jenny 2021-04-29 12:57:48 +02:00
parent f4a6715bd2
commit 2f1f9faeae
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3 changed files with 47 additions and 0 deletions
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19
data/src/main/java/org/cryptomator/data/cloud/s3/S3CloudApiExceptions.java Normal file
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@ -0,0 +1,19 @@
package org.cryptomator.data.cloud.s3;
public class S3CloudApiExceptions {
public enum S3CloudApiErrorCodes {
NO_SUCH_BUCKET("NoSuchBucket");
private final String value;
S3CloudApiErrorCodes(final String newValue) {
value = newValue;
}
public String getValue() {
return value;
}
}
}

17
data/src/main/java/org/cryptomator/data/cloud/s3/S3Impl.java
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@ -4,6 +4,7 @@ import android.content.Context;
import com.amazonaws.event.ProgressListener;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.model.AmazonS3Exception;
import com.amazonaws.services.s3.model.CopyObjectResult;
import com.amazonaws.services.s3.model.DeleteObjectsRequest;
import com.amazonaws.services.s3.model.DeleteObjectsRequest.KeyVersion;
@ -22,6 +23,8 @@ import org.cryptomator.data.util.CopyStream;
import org.cryptomator.domain.S3Cloud;
import org.cryptomator.domain.exception.BackendException;
import org.cryptomator.domain.exception.CloudNodeAlreadyExistsException;
import org.cryptomator.domain.exception.FatalBackendException;
import org.cryptomator.domain.exception.NoSuchBucketException;
import org.cryptomator.domain.exception.NoSuchCloudFileException;
import org.cryptomator.domain.exception.authentication.NoAuthenticationProvidedException;
import org.cryptomator.domain.usecases.ProgressAware;
@ -106,6 +109,20 @@ class S3Impl {
return S3CloudNodeFactory.folder(parent, name, parent.getKey() + name);
}
public boolean bucketExists() throws BackendException {
try {
client().listObjectsV2(cloud.s3Bucket());
} catch(AmazonS3Exception ex) {
if (ex.getErrorCode().equals(S3CloudApiExceptions.S3CloudApiErrorCodes.NO_SUCH_BUCKET.getValue())) {
throw new NoSuchBucketException(cloud.s3Bucket());
} else {
throw new FatalBackendException(ex);
}
}
return true;
}
public boolean exists(S3Node node) {
String key = node.getKey();

11
domain/src/main/java/org/cryptomator/domain/exception/NoSuchBucketException.java Normal file
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@ -0,0 +1,11 @@
package org.cryptomator.domain.exception;
public class NoSuchBucketException extends BackendException {
public NoSuchBucketException() {
}
public NoSuchBucketException(String name) {
super(name);
}
}