Example usage for org.springframework.integration.file.support FileExistsMode IGNORE

Introduction

In this page you can find the example usage for org.springframework.integration.file.support FileExistsMode IGNORE.

Prototype

FileExistsMode IGNORE

To view the source code for org.springframework.integration.file.support FileExistsMode IGNORE.

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Document

If the file already exists, do nothing.

Usage

From source file:org.springframework.integration.file.FileWritingMessageHandler.java

@Override
protected Object handleRequestMessage(Message<?> requestMessage) {
    Assert.notNull(requestMessage, "message must not be null");
    Object payload = requestMessage.getPayload();
    Assert.notNull(payload, "message payload must not be null");
    String generatedFileName = this.fileNameGenerator.generateFileName(requestMessage);
    File originalFileFromHeader = this.retrieveOriginalFileFromHeader(requestMessage);

    final File destinationDirectoryToUse = evaluateDestinationDirectoryExpression(requestMessage);

    File tempFile = new File(destinationDirectoryToUse, generatedFileName + temporaryFileSuffix);
    File resultFile = new File(destinationDirectoryToUse, generatedFileName);

    if (FileExistsMode.FAIL.equals(this.fileExistsMode) && resultFile.exists()) {
        throw new MessageHandlingException(requestMessage,
                "The destination file already exists at '" + resultFile.getAbsolutePath() + "'.");
    }/*from   w w  w  .  ja  v a 2  s . com*/

    final boolean ignore = FileExistsMode.IGNORE.equals(this.fileExistsMode)
            && (resultFile.exists() || (StringUtils.hasText(this.temporaryFileSuffix) && tempFile.exists()));

    if (!ignore) {

        try {
            if (payload instanceof File) {
                resultFile = this.handleFileMessage((File) payload, tempFile, resultFile);
            } else if (payload instanceof byte[]) {
                resultFile = this.handleByteArrayMessage((byte[]) payload, originalFileFromHeader, tempFile,
                        resultFile);
            } else if (payload instanceof String) {
                resultFile = this.handleStringMessage((String) payload, originalFileFromHeader, tempFile,
                        resultFile);
            } else {
                throw new IllegalArgumentException(
                        "unsupported Message payload type [" + payload.getClass().getName() + "]");
            }
        } catch (Exception e) {
            throw new MessageHandlingException(requestMessage, "failed to write Message payload to file", e);
        }

    }

    if (!this.expectReply) {
        return null;
    }

    if (resultFile != null) {
        if (originalFileFromHeader == null && payload instanceof File) {
            return MessageBuilder.withPayload(resultFile).setHeader(FileHeaders.ORIGINAL_FILE, payload);
        }
    }
    return resultFile;
}

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From source file:org.springframework.integration.file.FileWritingMessageHandlerTests.java

@Test
public void existingFileIgnored() throws Exception {
    Message<?> message = MessageBuilder.withPayload(SAMPLE_CONTENT).build();
    QueueChannel output = new QueueChannel();
    File outFile = temp.newFile("/outputDirectory/" + message.getHeaders().getId().toString() + ".msg");
    FileCopyUtils.copy("foo".getBytes(), new FileOutputStream(outFile));
    handler.setCharset(DEFAULT_ENCODING);
    handler.setOutputChannel(output);/*from w w  w  .  j  a  va  2s .  co m*/
    handler.setFileExistsMode(FileExistsMode.IGNORE);
    handler.handleMessage(message);
    Message<?> result = output.receive(0);
    assertFileContentIs(result, "foo");
}

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From source file:org.springframework.integration.file.FileWritingMessageHandlerTests.java

@Test
public void existingWritingFileIgnored() throws Exception {
    Message<?> message = MessageBuilder.withPayload(SAMPLE_CONTENT).build();
    QueueChannel output = new QueueChannel();
    File outFile = temp.newFile("/outputDirectory/" + message.getHeaders().getId().toString() + ".msg.writing");
    FileCopyUtils.copy("foo".getBytes(), new FileOutputStream(outFile));
    handler.setCharset(DEFAULT_ENCODING);
    handler.setOutputChannel(output);//from   w w  w .  j a  va 2 s  .c om
    handler.setFileExistsMode(FileExistsMode.IGNORE);
    handler.handleMessage(message);
    Message<?> result = output.receive(0);
    File destFile = (File) result.getPayload();
    assertNotSame(destFile, sourceFile);
    assertThat(destFile.exists(), is(false));
    assertThat(outFile.exists(), is(true));
}

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From source file:org.springframework.integration.file.FileWritingMessageHandlerTests.java

@Test
public void existingWritingFileNotIgnoredIfEmptySuffix() throws Exception {
    Message<?> message = MessageBuilder.withPayload(SAMPLE_CONTENT).build();
    QueueChannel output = new QueueChannel();
    File outFile = temp.newFile("/outputDirectory/" + message.getHeaders().getId().toString() + ".msg.writing");
    FileCopyUtils.copy("foo".getBytes(), new FileOutputStream(outFile));
    handler.setCharset(DEFAULT_ENCODING);
    handler.setOutputChannel(output);/*from   ww  w  .  j  av  a  2  s  .co m*/
    handler.setFileExistsMode(FileExistsMode.IGNORE);
    handler.setTemporaryFileSuffix("");
    handler.handleMessage(message);
    Message<?> result = output.receive(0);
    File destFile = (File) result.getPayload();
    assertNotSame(destFile, sourceFile);
    assertFileContentIsMatching(result);
    assertThat(outFile.exists(), is(true));
    assertFileContentIs(outFile, "foo");
}

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