I am Spring Integration 4.3.13 and trying to pass patterns when configuring #GlobalChannelInterceptor
Here is the example
#Configuration
public class IntegrationConfig{
#Bean
#GlobalChannelInterceptor(patterns = "${spring.channel.interceptor.patterns:*}")
public ChannelInterceptor channelInterceptor(){
return new ChannelInterceptorImpl();
}
}
properties file has following values:
spring.channel.interceptor.patterns=*intchannel, *event
I am using direct channels with names that end with these two string
springintchannel
registrationevent
With the above config, both the channels should have interceptor configured but it is not getting configured.
The comma-separate value isn't support there currently.
I agree that we need to fix it, so feel free to raise a JIRA on the matter and we will file a solution from some other place.
Meanwhile you can do this as a workaround:
#Bean
public GlobalChannelInterceptorWrapper channelInterceptorWrapper(#Value("${spring.channel.interceptor.patterns:*}") String[] patterns) {
GlobalChannelInterceptorWrapper globalChannelInterceptorWrapper = new GlobalChannelInterceptorWrapper(channelInterceptor());
globalChannelInterceptorWrapper.setPatterns(patterns);
return globalChannelInterceptorWrapper;
}
Related
A spring integration based converter consumes the messages from one system, checks, converts and sends it to the other one.
Should the target system be down, we stop the inbound adapters, but would also like to persist locally or forward the currently "in-flight" converted messages. For that would simply like to reroute the messages from the normal output channel to some "backup"-channel dynamically.
In the docs I have found only the option to route the messages based on their headers ( so on some step before in flow I would have to add those dynamically once the targer system is not availbale), or based on the payload type, which is not really my case. The case with adding dynamically some header, and then filtering it out down the pipe, or during de-/serializing still seems not the best approach for me. I would like rather to be able to turn a switch(on some internal Event) that would then reroute those "in-flight" messages to the "backup"-channel.
What would be a best SI approach to achive this? Thanks!
The router could not only be based on the the payload type or some header. You really can have a general POJO method invocation to return a channel, its name or some routing key which is mapped. That POJO method indeed can check some internal system state and produce this or that routing key.
So, you may have something like this in the router configuration:
.route(myRouter())
where your myRouter is something like this:
#Bean
MyRouter myRouter() {
return;
}
and its internal code might be like this:
public class MyRouter {
#Autowired
private SystemState systemState;
String route(Object payload) {
return this.systemState.isActive() ? "successChannel" : "backupChannel";
}
}
The same can be achieved a simple lambda definition:
.<Object, Boolean>route(p -> systemState().isActive(),
m -> m.channelMapping(true, "sucessChannel")
.channelMapping(false, "backupChannel"))
Also...
private final AtomicBoolean switcher = new AtomicBoolean();
#Bean
public IntegrationFlow flow() {
return IntegrationFlows.from(() -> "foo", e -> e.poller(Pollers.fixedDelay(Duration.ofSeconds(5))))
.route(s -> switcher.get() ? "foo" : "bar")
.get();
}
I am very new to Spring Integration and my project is using File Support to read a file and load into data base.
I have XML config , trying to understand it's content.
<int-file:inbound-channel-adapter auto-startup= true channel="channelOne" directory="${xx}" filename-regex="${xx}" id="id" prevent-duplicates="false">
<int:poller fixed-delay="1000" receive-timeout="5000"/>
</int-file:inbound-channel-adapter>
<int:channel id="channelOne"/>
From the above piece, my understanding is :
We define a channel and
Then define inbound-channel-adapter - this will look into directory for the file and create a message with file as a payload.
I was able to convert this in JavaConfig as below :
#Bean
public MessageChannel fileInputChannel() {
return new DirectChannel();
}
#Bean
#InboundChannelAdapter(value = "fileInputChannel", poller = #Poller(fixedDelay = "1000"))
public MessageSource<File> fileReadingMessageSource() {
FileReadingMessageSource sourceReader= new FileReadingMessageSource();
RegexPatternFileListFilter regexPatternFileListFilter = new RegexPatternFileListFilter(
file-regex);
//List<FileListFilter<File>> fileListFilter = new ArrayList<FileListFilter<File>>();
fileListFilter.add(regexPatternFileListFilter);
//CompositeFileListFilter compositeFileListFilter = new CompositeFileListFilter<File>(
fileListFilter);
sourceReader.setDirectory(new File(inputDirectorywhereFileComes));
sourceReader.setFilter(regexPatternFileListFilter );
return sourceReader;
}
Then the next piece of code , which literally I am struggling to understand and moreover to convert to JavaConfig.
Here is the next piece:
<int-file:outbound-gateway
delete-source-files="true"
directory="file:${pp}"
id="id"
reply-channel="channelTwo"
request-channel="channelOne"
temporary-file-suffix=".tmp"/>
<int:channel id="channelTwo"/>
<int:outbound-channel-adapter channel="channelTwo" id="id" method="load" ref="beanClass"/>
So from this piece , my understanding :
1: Define an output channel.
2: Define an outbound-gateway, which will write that message as a file again in directory(other one), also remove file from source directory. And finally it will call the method Load of Bean Class. This is our class and has load method which takes file as input and load it to DB.
I tried to covert it into Java Config. Here is my code:
#Bean
#ServiceActivator(inputChannel= "fileInputChannel")
public MessageHandler fileWritingMessageHandler() throws IOException, ParseException {
FileWritingMessageHandler handler = new FileWritingMessageHandler(new File(path to output directory));
handler.setFileExistsMode(FileExistsMode.REPLACE);
beaObject.load(new File(path to output directory or input directory:: Nothing Worked));
handler.setDeleteSourceFiles(true);
handler.setOutputChannel(fileOutputChannel());
return handler;
}
I am able to write this file to output folder also was able to delete from source. After that I am totally lost. I have to call method Load of my BeanClass(ref=class in XML ).
I tried a lot, but not able to get it. Read multiple times the integration File Support doc, but couldn't make it.
Note: When I tried , I got one error saying , the File Not Found Exception. I believe , I am able to call my method , but can not get the file.
This XML config is working perfectly fine.
Spring Integration with DSL also anyone can suggest, if possible.
Please help me to understand the basic flow and get this thing done. Any help and comments is really appreciable.
Thanks in advance.
First of all you need to understand that #Bean method is exactly for configuration and components definitions which are going to be used later at runtime. You definitely must not call a business logic in the #Bean. I mean that your beaObject.load() is totally wrong.
So, please, go first to Spring Framework Docs to understand what is #Bean and its parent #Configuration: https://docs.spring.io/spring/docs/5.1.2.RELEASE/spring-framework-reference/core.html#beans-java
Your #ServiceActivator for the FileWritingMessageHandler is really correct (when you remove that beaObject.load()). What you just need is to declare one more #ServiceActivator for calling your beaObject.load() at runtime when message appears in the fileOutputChannel:
#ServiceActivator(inputChannel= "fileOutputChannel")
public void loadFileIntoDb(File payload) {
this.beaObject.load(payload);
}
See https://docs.spring.io/spring-integration/docs/5.1.1.BUILD-SNAPSHOT/reference/html/configuration.html#annotations for more info.
I am using Spring Integration to consume RSS feeds. Once I get a feed item, I need to enhance the data by using a field from the payload, call a Java class to get some additional data and store this with the payload before writing all the data to the DB.
What is the best way to do this, a payload enricher or a service activator and how to specify this using DSL?
Finally as the payload is an SyndEntry object, do I need to create a new payload with new fields?
Any pointers would be helpful.
Yes, you need a new payload type; you can use a simple POJO...
#Bean
public Enricher enricher() {
return new Enricher();
}
public static class Enricher {
public Enhanced enhance(SyndEntry entry) {
return new Enhanced(entry, "foo", "bar");
}
}
Then, in the DSL...
...
.handle("enricher", "enhance")
...
I am using Breeze with much success in my SPA, but seem to be stuck when trying to return parent->child data in a single query by using expand().
When doing a single table query, the $type in the JSON return is correct:
$type: MySPA.Models.Challenge, MySPA
However if I use expand() in my query I get the relational data, but the $type is this:
System.Collections.Generic.Dictionary 2[[System.String, mscorlib],[System.Object, mscorlib]]
Because of the $type is not the proper table + namespace, the client side code can't tell that this is an entity and exposes it as JSON and not a Breeze object (with observables, entityAspect, etc.).
At first I was using my own ContextProvider so that I could override the Before/After saving methods. When I had these problems, I reverted back to the stock EFContextProvider<>.
I am using EF5 in a database first mode.
Here's my controller code:
[BreezeController]
public class DataController : ApiController
{
// readonly ModelProvider _contextProvider = new ModelProvider();
readonly EFContextProvider<TestEntities> _contextProvider = new EFContextProvider<TestEntities>();
[HttpGet]
public string Metadata()
{
return _contextProvider.Metadata();
}
[Queryable(AllowedQueryOptions = AllowedQueryOptions.All)]
[HttpGet]
public IQueryable<Challenge> Challenges()
{
return _contextProvider.Context.Challenges;
}
[HttpPost]
public SaveResult SaveChanges(JObject saveBundle)
{
return _contextProvider.SaveChanges(saveBundle);
}
public IQueryable<ChallengeNote> ChallengeNotes()
{
return _contextProvider.Context.ChallengeNotes;
}
}
Here's my BreezeWebApiConfig.cs
public static void RegisterBreezePreStart()
{
GlobalConfiguration.Configuration.Formatters.Remove(GlobalConfiguration.Configuration.Formatters.XmlFormatter);
GlobalConfiguration.Configuration.Routes.MapHttpRoute(
name: "BreezeApi",
routeTemplate: "breeze/{controller}/{action}"
);
}
Is there a configuration setting that I am missing?
Did you try "expanding" on server side? Is it needed to do expand on client side? I tried to do expand before but failed for me as well, did some research and decided I'd rather place it on server:
[HttpGet]
public IQueryable<Challenge> ChallengesWithNotes()
{
return _contextProvider.Context.Challenges.Include("ChallengeNotes");
}
This should be parsed as expected. On client side you would query for "ChallengeNotes" instead of "Challenges" and you wouldn't need to write expand part.
I strongly suspect that the problem is due to your use of the [Queryable] attribute.
You must use the [BreezeQueryable] attribute instead!
See the documentation on limiting queries.
We are aware that Web API's QueryableAttribute has been deprecated in favor of EnableQueryAttribute in Web API v.1.5. Please stick with BreezeQueryable until we've had a chance to write a corresponding derived attribute for EnableQuery. Check with the documentation for the status of this development.
I am using a sping ws endpoint with jaxb marshalling/unmarshalling to proudce a list of Organisation objects (our local type). The endpoint is SOAP 1.1, no parameters supplied on the request message.
I understand JAXB doesn't handle lists very well, so I use a wrapper class.
#XmlRootElement(name="orgResponse", namespace=....)
public class OrganisationListWrapper {
private ArrayList<Organisation> organisationList;
public getOrganisationList() {
return organisationList;
}
public setOrganisationList(ArrayList<Organisation> organisationList) {
this.organisationList = organisationList;
}
}
The endpoint....
#PayloadRoot(localPart=.... namespace=....)
#ResponsePayload
public OrganisationListWrapper getOrganisations() {
OrganisationListWrapper wrapper = new OrganisationListWrapper();
wrapper.setOrganisationList(.... call service layer get list ....);
return wrapper;
}
This works fine and I get a SOAP payload with
<orgResponse>
<organisationList>
... contents of organisation 1
</organisationList>
<organisationList>
... comtents of organisation 2
</organisationList>
.... etc ....
</orgResponse>
The Organisation class is not JAXB annotated. It is part of a large list of pre-existing classes that are being exposed through web services for the first time. Trying to get by without going in and annotating them all by hand.
I was able to override the name OrganisationWrapper with orgResponse in the XmlRootElement annotation. I would like to override the organisationList name in the child element with organisation but haven't been able to find an annotation that does this.
I can replace the array list name with organisation and it will work fine, but our coding standard here required us to put List on the end of our list names. I would like to try and stick to that. I have tried XmlElement, but that produced a jaxb exception.
Any suggestions would be appreciated.
Because JAXB default the access type to PUBLIC_MEMBER, make sure you annotate the property (getter) and not the field:
#XmlElement(name="organisation")
public getOrganisationList() {
return organisationList;
}
If you want to annotate the field then add the following annotation to your class:
#XmlAccessorType(XmlAccessType.FIELD)