| /**************************************************************** |
| * 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.james.jmap.model; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.Objects; |
| |
| import org.apache.james.jmap.exceptions.BlobNotFoundException; |
| import org.apache.james.mailbox.model.ContentType; |
| import org.apache.james.util.ReactorUtils; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.base.MoreObjects; |
| import com.google.common.base.Preconditions; |
| |
| import reactor.core.publisher.Mono; |
| |
| public class Blob { |
| |
| @FunctionalInterface |
| public interface InputStreamSupplier { |
| /** |
| * @return the content of this blob as an inputStream. |
| * |
| * The caller is responsible of closing it. |
| */ |
| InputStream load() throws IOException, BlobNotFoundException; |
| |
| default Mono<InputStream> loadReactive() { |
| return Mono.fromCallable(this::load) |
| .subscribeOn(ReactorUtils.BLOCKING_CALL_WRAPPER); |
| } |
| } |
| |
| public static class Builder { |
| private BlobId blobId; |
| private InputStreamSupplier payload; |
| private ContentType contentType; |
| private Long size; |
| |
| private Builder() { |
| } |
| |
| public Builder id(BlobId id) { |
| this.blobId = id; |
| return this; |
| } |
| |
| public Builder payload(InputStreamSupplier payload) { |
| this.payload = payload; |
| return this; |
| } |
| |
| public Builder contentType(String contentType) { |
| this.contentType = ContentType.of(contentType); |
| return this; |
| } |
| |
| public Builder contentType(ContentType contentType) { |
| this.contentType = contentType; |
| return this; |
| } |
| |
| public Builder size(long size) { |
| this.size = size; |
| return this; |
| } |
| |
| public Blob build() { |
| Preconditions.checkState(blobId != null, "id can not be empty"); |
| Preconditions.checkState(payload != null, "payload can not be empty"); |
| Preconditions.checkState(contentType != null, "contentType can not be empty"); |
| Preconditions.checkState(size != null, "size can not be empty"); |
| |
| return new Blob(blobId, payload, contentType, size); |
| } |
| } |
| |
| public static Builder builder() { |
| return new Builder(); |
| } |
| |
| private final BlobId blobId; |
| private final InputStreamSupplier payload; |
| private final ContentType contentType; |
| private final long size; |
| |
| @VisibleForTesting |
| Blob(BlobId blobId, InputStreamSupplier payload, ContentType contentType, long size) { |
| this.blobId = blobId; |
| this.payload = payload; |
| this.contentType = contentType; |
| this.size = size; |
| } |
| |
| public BlobId getBlobId() { |
| return blobId; |
| } |
| |
| public InputStream getStream() throws IOException { |
| return payload.load(); |
| } |
| |
| public Mono<InputStream> getStreamReactive() { |
| return payload.loadReactive(); |
| } |
| |
| public long getSize() { |
| return size; |
| } |
| |
| public ContentType getContentType() { |
| return contentType; |
| } |
| |
| @Override |
| public final boolean equals(Object o) { |
| if (o instanceof Blob) { |
| Blob blob = (Blob) o; |
| |
| return Objects.equals(this.blobId, blob.blobId) |
| && Objects.equals(this.contentType, blob.contentType); |
| } |
| return false; |
| } |
| |
| @Override |
| public final int hashCode() { |
| return Objects.hash(blobId, contentType); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(this) |
| .add("blobId", blobId) |
| .add("contentType", contentType) |
| .toString(); |
| } |
| } |