I am new to Spring batch integration. I need to move a file from one local directory to another. I tried using inbound channel and out bound channel. I'm not able to move it.
<file:inbound-channel-adapter channel="incomingfiles"
directory="file:${java.io.tmpdir}/spring-integration-samples/input"
filename-pattern="*.txt">
<file:outbound-channel-adapter channel="outgoingfiles"
directory="file:${java.io.tmpdir}/spring-integration-samples/output">
I am using correct spring namespace handler but i get unable to load namespacehandler[file]. I have added spring integration jars too. Not a mavenproject.
Kindly help me. or Can we move a file using batch instead of spring integration? IF yes, could you tell me how to do it?
Related
I'm dipping my toes into the microservices, is spring boot batch applicable to the following requirements?
Files of one or multiple are read from a specific directory in Linux.
Several operations like regex, build new files, write the file and ftp to a location
Send email during a process fail
Using spring boot is confirmed, now the question is
Should I use spring batch or just core spring framework?
I need to integrate with Control-M to trigger the job. Can the Control-M be completely removed by using Spring batch library? As we don't know when to expect the files in the directory.
I've not seen a POC with these requirements. Would someone provide an example POC or an affirmation this could be achieved with Spring batch?
I would use Spring Batch for that use case. Not only does it provide out of the box components for reading, processing, and writing files, it adds a lot more for error handling, scalability, etc. All of those things you'd probably end up wiring up by yourself if you go without Spring Batch.
As for being launched via Control-M, yes MANY large customers use Control-M to launch their jobs. Unfortunately, I've never done it myself so I cannot provide any details on the mechanics, but if Control-M can either launch a script or call a REST API, you can launch a job with it.
I would suggest you, go for spring batch as it has much-inbuilt functionality which will be provided to you for file reading and writing to your required location. Even you will be able to handle record skipping requirement. Your mail triggering requirement will be handled by Control M. You just need to decide one exit code for your handled exception and on the basis of that exit code you can trigger the mail to respective members. And there are many other features which will be helpful if you go for spring batch.
We have Spring4 and Spring Batch 3 and our app consumes CSV files as input file. Currently we kick off the jobs manually from the command line, using CommandLineJobRunner with parms, including the name of the file to process.
I want to kick off a job to process asynchronously just as soon as the input file arrives in a monitored directory. How can we do that?
You may use java.nio.file.WatchService to monitor directory for a file.
Once file appears you may start (or kick off a job to process asynchronously) actual processing.
You may also use FileReadingMessageSource.WatchServiceDirectoryScanner from Spring Integration (https://docs.spring.io/spring-integration/reference/html/files.html#watch-service-directory-scanner)
Comparing release notes Spring Batch https://github.com/spring-projects/spring-batch/releases
to Spring Integration https://github.com/spring-projects/spring-integration/releases it looks that Spring Integration is released more often. It also has more features and Integration points.
In this case it looks like a overkill to bring Spring Integration if you just need to watch a directory for a file.
I would recommend using the powerful combination of Spring Batch with Spring Integration. For example, you can use a FileInboundChannelAdapter from Spring Integration to monitor a directory and start a Spring Batch Job as soon as the input file arrives.
There is a code example for this typical use case in the reference documentation of Spring Batch here: https://docs.spring.io/spring-batch/4.0.x/reference/html/spring-batch-integration.html#launching-batch-jobs-through-messages
I hope this helps.
I'm new to spring integration. I need to fetch some file via sftp and immediately start some processing on the content of that file. There is SFTP Inbound Channel Adapter that partially satisfy me. But it saves(as documentation says) fetched file in local directory. I have no possibility to save it on local machine, but just want to start processing the content of that file, so it will be good for me to retrieve remote file as byte array or as InputStream. How can I achieve this with spring integration?
Also I want to configure my system to periodically fetch that file. I know that I can configure spring bean with #Scheduled annotation on some method and start processing from that method. But, maybe, spring integration has more elegant solution for such case?
Spring Integration 3.0.1 has a new RemoteFileTemplate that you can use to programmatically receive a file as a stream. See the Javadocs.
I am new to Spring Integration and I am considering using it in order to poll a directory for new files in order to process those files.
My question is: is Spring Integration some sort of daemon one can launch and that one can use in order to poll a directory?
Is this is possible can someone please direct me to relevant section of the official documentation on how to launch Spring Integration?
All you need is to have a main method (or a WAR file if you want to deploy to Tomcat or another servlet container) that creates a Spring ApplicationContext (e.g. new ClassPathXmlApplicationContext("file-poller.xml"))
It can run with a cron trigger, fixed-rate or fixed-delay trigger.
JMX operations can be exposed on Spring Integration's File adapter (or any adapter) by simply adding a single config element (e.g. <mbean-export>).
Bottom line: you REALLY do not need an ESB if you simply want a File poller to run continuously. You can have a single small config file and one line of code in a main method.
Visit the samples for more info: https://github.com/springsource/spring-integration-samples (look under basic/file specifically)
Hope that helps,
Mark
Spring Integration is a part of framework, its not a programm or daemon.
What you cant do — is to configure Spring Integration to poll a directory, lunch JVM with Spring onboard and poller will do what you want.
You can start with this blog post.
More samples
Relevant section of documentation
I'm using Spring 2.5.6. I have a bean whose properties are being assign from a property file via a PropertyPlaceholderConfigurer. I'm wondering whether its possible to have the property of the bean updated when the property file is modified. There would be for example some periodic process which checks the last modified date of the property file, and if it has changed, reload the bean.
I'm wondering if there is already something that satisfies my requirements. If not, what would be the best approach to solving this problem?
Thanks for your help.
Might also look into useing Spring's PropertyOverrideConfigurer. Could re-read the properties and re-apply it in some polling/schedular bean.
It does depend on how the actual configured beans use these properties. They might, for example, indirectly cache them somewhere themself.
If you want dynamic properties at runtime, perhaps another way to do it is JMX.
One way to do this is to embed a groovy console in your application. Here's some instructions. They were very simple to do, btw - took me very little time even though I'm not that familiar with groovy.
Once you do that you can simply go into the console and change values inside the live application on the fly.
You might try to use a custom scope for the bean that recreates beans on changes of the properties file. See my more extensive answer here.
Spring Cloud Config has facilities to change configuration properties at runtime via the Spring Cloud Bus and using a Cloud Config Server. The configuration or .properties or .yml files are "externalized" from the Spring app and instead retrieved from a Spring Cloud Config Server that the app connects to on startup. That Cloud Config Server retrieves the appropriate configuration .properties or .yml files from a GIT repo (there are other storage solutions, but GIT is the most common). You can then change configuration at runtime by changing the contents of the GIT repo's configuration files--The Cloud Config Server broadcasts the changes to any Client Spring applications via the Spring Cloud Bus, and those applications' configuration is updated without needing a restart of the app. You can find a working simple example here: https://github.com/ldojo/spring-cloud-config-examples