chibenwa commented on code in PR #2960:
URL: https://github.com/apache/james-project/pull/2960#discussion_r2916450480
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server/blob/blob-api/src/main/java/org/apache/james/blob/api/BlobStoreDAO.java:
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@@ -19,86 +19,128 @@
package org.apache.james.blob.api;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
import java.io.InputStream;
-import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import java.util.Collection;
+import java.util.Map;
import org.reactivestreams.Publisher;
+import com.google.common.collect.ImmutableMap;
import com.google.common.io.ByteSource;
+import com.google.common.io.FileBackedOutputStream;
public interface BlobStoreDAO {
- class ReactiveByteSource {
- private final long size;
- private final Publisher<ByteBuffer> content;
+ record BlobMetadataName(String name) {
+ // TODO validation (a-z,A-Z,0-9 -_) &length 128 char & non empty
+ }
+ record BlobMetadataValue(String value) {
+
+ }
+
+ sealed interface Blob {
+ Map<BlobMetadataName, BlobMetadataValue> metadata();
+
+ // Have the POJOs encode some conversions ?
+ InputStreamBlob asInputStream() throws IOException;
+
+ BytesBlob asBytes() throws IOException;
+
+ ByteSourceBlob asByteSource() throws IOException;
+ }
+
+ record BytesBlob(byte[] payload, Map<BlobMetadataName, BlobMetadataValue>
metadata) implements Blob {
+ public static BytesBlob of(byte[] payload) {
+ return of(payload, ImmutableMap.of());
+ }
+
+ public static BytesBlob of(String payload) {
+ return of(payload.getBytes(StandardCharsets.UTF_8),
ImmutableMap.of());
+ }
- public ReactiveByteSource(long size, Publisher<ByteBuffer> content) {
- this.size = size;
- this.content = content;
+ public static BytesBlob of(byte[] payload, Map<BlobMetadataName,
BlobMetadataValue> metadata) {
+ return new BytesBlob(payload, metadata);
}
- public long getSize() {
- return size;
+ @Override
+ public InputStreamBlob asInputStream() {
+ return new InputStreamBlob(new ByteArrayInputStream(payload),
metadata);
}
- public Publisher<ByteBuffer> getContent() {
- return content;
+ @Override
+ public BytesBlob asBytes() {
+ return this;
+ }
+
+ @Override
+ public ByteSourceBlob asByteSource() {
+ return new ByteSourceBlob(ByteSource.wrap(payload), metadata);
}
}
+ record InputStreamBlob(InputStream payload, Map<BlobMetadataName,
BlobMetadataValue> metadata) implements Blob {
+ public static InputStreamBlob of(InputStream payload) {
+ return of(payload, ImmutableMap.of());
+ }
- /**
- * Reads a Blob based on its BucketName and its BlobId.
- *
- * @throws ObjectNotFoundException when the blobId or the bucket is not
found
- * @throws ObjectStoreIOException when an unexpected IO error occurs
- */
- InputStream read(BucketName bucketName, BlobId blobId) throws
ObjectStoreIOException, ObjectNotFoundException;
+ public static InputStreamBlob of(InputStream payload,
Map<BlobMetadataName, BlobMetadataValue> metadata) {
+ return new InputStreamBlob(payload, metadata);
+ }
- Publisher<InputStream> readReactive(BucketName bucketName, BlobId blobId);
+ @Override
+ public InputStreamBlob asInputStream() {
+ return this;
+ }
- /**
- * Reads a Blob based on its BucketName and its BlobId
- *
- * @return a Mono containing the content of the blob or
- * an ObjectNotFoundException in its error channel when the blobId or the
bucket is not found
- * or an IOObjectStoreException when an unexpected IO error occurs
- */
- Publisher<byte[]> readBytes(BucketName bucketName, BlobId blobId);
+ @Override
+ public BytesBlob asBytes() throws IOException {
+ return new BytesBlob(payload.readAllBytes(), metadata);
+ }
+ @Override
+ public ByteSourceBlob asByteSource() throws IOException {
+ try (FileBackedOutputStream fileBackedOutputStream = new
FileBackedOutputStream(100 * 1024)) {
Review Comment:
Yes I can add JVM args in order to easily control this if need be.
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