8.5.7. 生产者操作示例

from("direct:start")
  .process(exchange -> {
    // set the header you want the producer to evaluate, refer to the previous
    // section to learn about the headers that can be set
    // e.g:
    exchange.getIn().setHeader(BlobConstants.LIST_BLOB_CONTAINERS_OPTIONS, new ListBlobContainersOptions().setMaxResultsPerPage(10));
  })
  .to("azure-storage-blob://camelazure?operation=listBlobContainers&client&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .process(exchange -> {
    // set the header you want the producer to evaluate, refer to the previous
    // section to learn about the headers that can be set
    // e.g:
    exchange.getIn().setHeader(BlobConstants.BLOB_CONTAINER_NAME, "newContainerName");
  })
  .to("azure-storage-blob://camelazure/container1?operation=createBlobContainer&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .process(exchange -> {
    // set the header you want the producer to evaluate, refer to the previous
    // section to learn about the headers that can be set
    // e.g:
    exchange.getIn().setHeader(BlobConstants.BLOB_CONTAINER_NAME, "overridenName");
  })
  .to("azure-storage-blob://camelazure/container1?operation=deleteBlobContainer&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .process(exchange -> {
    // set the header you want the producer to evaluate, refer to the previous
    // section to learn about the headers that can be set
    // e.g:
    exchange.getIn().setHeader(BlobConstants.BLOB_CONTAINER_NAME, "overridenName");
  })
  .to("azure-storage-blob://camelazure/container1?operation=listBlobs&serviceClient=#client")
  .to("mock:result");

我们可以在交换正文中设置 输出Stream，并将数据写入其中。例如：

from("direct:start")
  .process(exchange -> {
    // set the header you want the producer to evaluate, refer to the previous
    // section to learn about the headers that can be set
    // e.g:
    exchange.getIn().setHeader(BlobConstants.BLOB_CONTAINER_NAME, "overridenName");

    // set our body
    exchange.getIn().setBody(outputStream);
  })
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=getBlob&serviceClient=#client")
  .to("mock:result");

如果没有设置正文，则此操作将为一个 InputStream 实例提供一个 InputStream 实例，以便进一步进行下游：

from("direct:start")
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=getBlob&serviceClient=#client")
  .process(exchange -> {
      InputStream inputStream = exchange.getMessage().getBody(InputStream.class);
      // We use Apache common IO for simplicity, but you are free to do whatever dealing
      // with inputStream
      System.out.println(IOUtils.toString(inputStream, StandardCharsets.UTF_8.name()));
  })
  .to("mock:result");

from("direct:start")
  .process(exchange -> {
    // set the header you want the producer to evaluate, refer to the previous
    // section to learn about the headers that can be set
    // e.g:
    exchange.getIn().setHeader(BlobConstants.BLOB_NAME, "overridenName");
  })
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=deleteBlob&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .process(exchange -> {
    // set the header you want the producer to evaluate, refer to the previous
    // section to learn about the headers that can be set
    // e.g:
    exchange.getIn().setHeader(BlobConstants.BLOB_NAME, "overridenName");
  })
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=downloadBlobToFile&fileDir=/var/mydir&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=downloadLink&serviceClient=#client")
  .process(exchange -> {
      String link = exchange.getMessage().getHeader(BlobConstants.DOWNLOAD_LINK, String.class);
      System.out.println("My link " + link);
  })
  .to("mock:result");

from("direct:start")
  .process(exchange -> {
    // set the header you want the producer to evaluate, refer to the previous
    // section to learn about the headers that can be set
    // e.g:
    exchange.getIn().setHeader(BlobConstants.BLOB_NAME, "overridenName");
    exchange.getIn().setBody("Block Blob");
  })
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=uploadBlockBlob&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .process(exchange -> {
      final List<BlobBlock> blocks = new LinkedList<>();
      blocks.add(BlobBlock.createBlobBlock(new ByteArrayInputStream("Hello".getBytes())));
      blocks.add(BlobBlock.createBlobBlock(new ByteArrayInputStream("From".getBytes())));
      blocks.add(BlobBlock.createBlobBlock(new ByteArrayInputStream("Camel".getBytes())));

      exchange.getIn().setBody(blocks);
  })
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=stageBlockBlobList&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .process(exchange -> {
      // We assume here you have the knowledge of these blocks you want to commit
      final List<Block> blocksIds = new LinkedList<>();
      blocksIds.add(new Block().setName("id-1"));
      blocksIds.add(new Block().setName("id-2"));
      blocksIds.add(new Block().setName("id-3"));

      exchange.getIn().setBody(blocksIds);
  })
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=commitBlockBlobList&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=getBlobBlockList&serviceClient=#client")
  .log("${body}")
  .to("mock:result");

from("direct:start")
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=createAppendBlob&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .process(exchange -> {
    final String data = "Hello world from my awesome tests!";
    final InputStream dataStream = new ByteArrayInputStream(data.getBytes(StandardCharsets.UTF_8));

    exchange.getIn().setBody(dataStream);

    // of course you can set whatever headers you like, refer to the headers section to learn more
  })
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=commitAppendBlob&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=createPageBlob&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .process(exchange -> {
    byte[] dataBytes = new byte[512]; // we set range for the page from 0-511
    new Random().nextBytes(dataBytes);
    final InputStream dataStream = new ByteArrayInputStream(dataBytes);
    final PageRange pageRange = new PageRange().setStart(0).setEnd(511);

    exchange.getIn().setHeader(BlobConstants.PAGE_BLOB_RANGE, pageRange);
    exchange.getIn().setBody(dataStream);
  })
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=uploadPageBlob&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .process(exchange -> {
    final PageRange pageRange = new PageRange().setStart(0).setEnd(511);

    exchange.getIn().setHeader(BlobConstants.PAGE_BLOB_RANGE, pageRange);
  })
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=resizePageBlob&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .process(exchange -> {
    final PageRange pageRange = new PageRange().setStart(0).setEnd(511);

    exchange.getIn().setHeader(BlobConstants.PAGE_BLOB_RANGE, pageRange);
  })
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=clearPageBlob&serviceClient=#client")
  .to("mock:result");

from("direct:start")
  .process(exchange -> {
    final PageRange pageRange = new PageRange().setStart(0).setEnd(511);

    exchange.getIn().setHeader(BlobConstants.PAGE_BLOB_RANGE, pageRange);
  })
  .to("azure-storage-blob://camelazure/container1?blobName=blob&operation=getPageBlobRanges&serviceClient=#client")
  .log("${body}")
  .to("mock:result");

from("direct:copyBlob")
  .process(exchange -> {
    exchange.getIn().setHeader(BlobConstants.BLOB_NAME, "file.txt");
    exchange.getMessage().setHeader(BlobConstants.SOURCE_BLOB_CONTAINER_NAME, "containerblob1");
    exchange.getMessage().setHeader(BlobConstants.SOURCE_BLOB_ACCOUNT_NAME, "account");
  })
  .to("azure-storage-blob://account/containerblob2?operation=copyBlob&sourceBlobAccessKey=RAW(accessKey)")
  .to("mock:result");

这样，帐户"account"的 containerblob1 中的 file.txt 将复制到同一帐户的容器blob2。