I have a camel route that splits and aggregates according to some ids. When an id is retrieved, a call is made to another endpoint to retrieve the project information according to this id. After retrieving the project information i had to enrich it by calling multiple enrich() methods on it. In the first enrich method i have to do some xpath processing wherein ill be able to retrieve a primaryOrgId value that i will set as a property in the exchange, dont worry about the xpath processing, i had that sorted out but my problem is when I set the property (primaryOrgId) inside the 1st enrich. The property value doesn't get persisted when the route goes to the 2nd enrich part. When I log the primaryOrgId value, the original value of "testValue" (this was set in the direct:createSomeIds route) is the one getting displayed instead of "changeTheValueHere" which was set in the 1st enrich part.
I am using Camel 2.15 based on Fuse 6.2.1.
I went to the camel site and read this part from http://camel.apache.org/content-enricher.html . I'm not sure I understood how to implement... "For that you must set the filename in the
endpoint URI" .. this text was talking about the header, i'm thinking its also applicable to the properties in the exchange.
pollEnrich or enrich does not access any data from the current
Exchange which means when polling it cannot use any of the existing
headers you may have set on the Exchange. For example you cannot set a
filename in the Exchange.FILE_NAME header and use pollEnrich to
consume only that file. For that you must set the filename in the
endpoint URI.
Here is my code:
from("direct:createSomeIds")
.routeId("createSomeIds")
.process(new IdCreatorProcessor()
.setProperty("primaryOrgId").constant("testValue")
.split(xpath("/TempProjects/TempProject/Code/text()").namespaces(ns) , new IdStrategy())
.to("direct:splitRouteById")
.end();
from("direct:splitRouteById")
.routeId("splitRouteById")
.to("direct:getProjectByID")
.to("xquery:template/AllProjectToSingleProject.xq") //xquery template
.convertBodyTo(Project.class)
.enrich("direct:getAdditionalInfo", new ProjectStrategy(ProjectStrategy.AggregatorType.AdditionalInfo))
.enrich("direct:getSecondaryInfo", new ProjectStrategy(ProjectStrategy.AggregatorType.SecondaryInfo))
.end();
from("direct:getAdditionalInfo")
//some xpath stuff here
.setProperty("primaryOrgId").constant("changeTheValueHere")
.end();
from("direct:getSecondaryInfo")
.log("Value of primaryOrgId = " + "${exchangeProperty.primaryOrgId}")
.end();
If you can provide some code example, that would be helpful.
If you read a bit further down you will see that it's recommended that you instead use RecipientList with an AggregationStrategy.
.recipientList("direct:getAdditionalInfo", "direct:getSecondaryInfo")
.aggregationStrategy(new ProjectStrategy())
The setting of filename in your endpoint URI would only be applicable if you were to access some file on an FTP or some other file area.
Edit:
I now see that you need the property from the first enrichment in your second enrichment. However, if you're not modifying the message body in the first enrich then I don't actually see the need for it at all.
If you are in fact modifying the body then you can still use the RecipientList but instead you use two separate ones calling only one endpoint in each.
Related
While monitoring an Apache Camel application with hawt.io, I noticed that the nodes of a camel route have some properties that I cannot influence with the Java DSL, but which are displayed in hawt.io. It would be pretty awesome if you could define them anyway.
I am particularly interested in the id and the description of a node in the route. My route currently looks something like this (screenshot below):
My route
rabbitmq://tso11
log4
process4
to3
process5
to4
The displayed names (log4, process4, process5, ...) are automatically generated "id" properties. There is also an always empty property "description".
It would be awesome if I could change this somehow for a much better readable route:
My route
rabbitmq://tso11
log incoming message
process for header extraction
to xslt processor additional-mappint.xslt
process for conversion to nms42 format
to nms42 endpoint
Maybe there is a way? Maybe only with XML based DSL?
Here is a screenshot:
In Java DSL, you can set the id of a node thanks to the method id(String id).
In the next example, the id of the endpoint mock:bar has been set to bar:
from("direct:start")
.to("mock:foo")
.to("mock:bar").id("bar")
.to("mock:result");
I'm trying to use Apache Camel (version 2.20.0) with mybatis component.
More specifically, I have to export a large set or record from database to file.
I'd like to prevent memory issues so I want to use the option consumer.useIterator. My route is:
from("mybatis:selectItemsByDate?statementType=SelectList&consumer.useIterator=true")
.split()
.body()
.process(doSomething)
to(file:my-path-file);
but my query has in input a parameter (the starting date to get data). How should I set this parameter?
In many example on internet I saw the parameter in the body or in the header of the Exchange message but I think is possibile only if the mybatis endpoint is in a "to" method. But the option "consumer.useIterator" is working only when the enpdoint is in a "from" method.
Please help me to understand how I can set the input for my query or if this is not supported yet (in this case if you can give some hint how to implement would be great)
thank you.
Then you need to start your route from something else, like a timer or direct endpoint, and then call the mybatis endpoint in a to, where you have set that information in the message body/header you use in the mybatis query so its dynamic.
Also you should set the splitter to be in streaming mode so it walks the iterator it gets from mybatis on-demand.
This is my route. I want to send a file to an Azure blob. I want to set the name of the blob as the file name without extension. I also want to filter out the whitespaces from the file names. I am thinking of using an interceptor
from("file://C:/camel/source1").recipientList(simple("azure-blob://datastorage/container1/${header.fileName}?credentials=#credentials&operation=updateBlockBlob"))
I want to invoke the interceptor only for updateBlockBlob operatin
interceptSendToEndpoint("^(azure-blob:).+(operation=updateBlockBlob)").setHeader("fileName",simple("${file:onlyname.noext}")).convertBodyTo(File.class)
The above code works with interceptFrom().
I tried replacing the regular expression with wild card like azure* i.e interceptSendToEndpoint("azure*"). It did not work
Whats wrong with the above code? Is it because of recipientList?
Also what features does simple have to remove white space?
Is there a better way to generate blob names dynamically?
Here is the documentation from camel on interceptors.
http://camel.apache.org/intercept.html
interceptFrom that intercepts incoming Exchange in the route.
interceptSendToEndpoint that intercepts when an Exchange is about to
be sent to the given Endpoint.
So I suspect the Exchange is already formed and camel expects the url to be resolved.
So the header needs to be set before the exchange is created for the Azure end point.
I did the following. To set the header, I use the interceptFrom, and to convert the object into File I used the inteceptSendToEndPoint
interceptSendToEndpoint("^(azure-blob:).+(operation=updateBlockBlob)").convertBodyTo(File.class)
interceptFrom().setHeader("fileName",simple("${file:onlyname.noext}".replaceAll("[^a-zA-Z\d]")))
Managed to get rid of the whitespace too
i have a processor which puts an unmarshaled ical file in a custom object. After this a list of my object is saved into exchange.
After this i need to put a second ical into exchange. Problem is that i cant use "from" two times in a route. How can i solve this?
Code for processing one ical is the following:
from("file://src/test/resources?fileName=Calendar.ics&delete=false&noop=true")
.unmarshal("ical")
.process(icsToBeanProcessor)
.end();
Perhaps you can improve the design a bit. Instead of specifying filenames use a directory instead. Process all files present in the directory and set them in header properties. Something like
from("file://src/test/resources?delete=false&noop=true")
.unmarshal("ical")
.process(icsToBeanProcessor) // in your icsToBeanProcessor set a header property as content.fileName as the output of your unmarshaller bean
.end();
Also you can be more specific by using a regex for specifying filenames. For your case pick only those files which ends with "ics". See http://camel.apache.org/file.html for more details.
I am new to camel and we are building an EDI engine and our requirement is to read the files from multiple folders then second step is to parse the message type and the receiver id and based on that the messages need to be routed to different folders.
The source, message type, receiver id and destination cannot be hardcoded in camel instead it should be read from the database and the routes need to be built dynamically.
Please let me know what should be the strategy that we need to follow.
Thanks,
Jayadeep
As I understand from your comments, you can read from multiple folders by adding routes dynamically but are facing issue when trying to decide on where to send the messages as the destination , headers etc is being read from database.
Here's how I would do it.
Get the file --> Enrich it with database call and get the receiever id etc --> Use Xpath and get the receiver id etc and set them in propertyor header --> Use XSLT and remove the values that you enriched for database call so now you have the original message ---> Now use router and look at properties/headers to decide the <camel:to> path