Hi
You can implement a custom org.apache.camel.spi.ResourceReload where you in
the onReload can program what to do.
The current defauly just do
if (name.endsWith(".properties")) {
onPropertiesReload(resource, true);
} else {
onRouteReload(List.of(resource), false);
}
And then create an instance of FileWatcherResourceReloadStrategy which you
can configure with folder / pattern etc, and then add this as a bean to
camel context.
On Thu, May 18, 2023 at 9:39 AM Fyodor Kravchenko <feddkr...@hotmail.com>
wrote:
> Hi,
>
> Thank you! I'm new to the Camel 3 API, can you please point me how can I
> load a route programmatically if I have a yaml or xml String (or
> Stream/Reader)?
>
> Regarding the ticket, loading the new files after the startup, renaming
> the route files and deleting them would also be a useful development
> feature. Currently it works independently from the initial load, so it
> does re-load all of the routes it encounters under the base directory,
> but the pattern it uses to choose which files to (re/un)load follows the
> different syntax and even the directory base is different.
>
> A jira ticket that I would file would require a developer-friendly
> "fileReload"-true-false configuration parameter, that would try to use
> the same pattern that the "include" configuration uses, if it is a
> "file" one. I can imagine it is not a trivial development for a rarely
> used development feature and is likely to be marked as "will not
> implement" so let's leave it as it is.
>
> On 18.05.2023 09:06, Claus Ibsen wrote:
> > On Wed, May 17, 2023 at 10:59 PM Fyodor Kravchenko <
> feddkr...@hotmail.com>
> > wrote:
> >
> >> Hi,
> >>
> >> I'm integrating Camel into my application, or better say, application
> >> platform, that may run different arbitrary Camel routes for integration,
> >> and I'd like to provide an ability for a developer who makes
> >> applications for this platform to edit the routes during the
> >> development. I'm already monitoring the filesystem for other artifact
> >> edits, so If there is an API to reload an individual route taken from a
> >> file I might use that.
> >>
> >> I've considered to use a separate Camel standalone or as a containerized
> >> service that I've noticed the project is encouraging now, but this would
> >> require me to develop some protocol to interact with my platform during
> >> its lifecycle. For Camel 2 I managed to instantiate xml snippets to
> >> custom Processors but the API has changed and this Main load-reload
> >> function seemed to do what I want for Camel 3.
> >>
> >>
> > Okay so for making the reload respect only already loaded files, then we
> > can match the "changed file event" form the JDK
> > and match if it was previously loaded or not. And then skip it if not.
> >
> > Then users can turn this on via some new option (maybe name it only
> > existing files, or some better name? ).
> > withRoutesReloadOnlyExistingFiles(true)
> >
> >
> > You are welcome to create a JIRA ticket for that.
> >
> >
> >
> >> On 17.05.2023 22:58, Claus Ibsen wrote:
> >>> Hi
> >>>
> >>> What is your goal with this?
> >>>
> >>> The reload stuff is for development and not a production app server to
> >>> "redeploy apps" or any sort of that.
> >>> The intention is that you work on a single application.
> >>>
> >>> The reload is using Java APIs for "change file events" and this does
> not
> >>> support an ANT style way and whatnot.
> >>>
> >>>
> >>> On Wed, May 17, 2023 at 8:45 PM Fyodor Kravchenko <
> feddkr...@hotmail.com
> >>>
> >>> wrote:
> >>>
> >>>> I'm sorry please disregard my previous ramblings, moving the "deploy"
> >>>> directory to the working directory of the java app did the "include"
> >>>> trick. It worked without the "file:" prefix because it was looking
> into
> >>>> the "target" directry which was the classpath.. My fault.
> >>>>
> >>>> However, the additional question remains: how do I make it _reload_
> what
> >>>> it loaded previosly, without catching the extra *.yaml files that may
> be
> >>>> located in the wrong directories?
> >>>>
> >>>> I'm trying this,
> >>>>
> >>>> Main main = new Main();
> >>>>
> >>>>
> >>
> main.configure().withRoutesIncludePattern("file:deploy/**/PRIVATE/EXCHANGE/*.yaml");
> >>>> main.configure().withRoutesReloadEnabled(true);
> >>>> main.configure().withRoutesReloadDirectory("deploy");
> >>>> main.configure().withRoutesReloadDirectoryRecursive(true);
> >>>> //
> >> main.configure().withRoutesReloadPattern("**/PRIVATE/EXCHANGE/*.yaml");
> >>>> //
> main.configure().withRoutesReloadPattern("PRIVATE/EXCHANGE/*.yaml");
> >>>> main.configure().withRoutesReloadPattern("*.yaml");
> >>>> main.configure().withRoutesReloadRemoveAllRoutes(true);
> >>>> main.run();
> >>>>
> >>>> but this will catch and load any .yaml file under the "deploy"
> >>>> directory, event those that wasn't loaded at startup, when I touch any
> >>>> of the yamls.
> >>>>
> >>>> Any tips on reloading patterns?
> >>>>
> >>>> Thank you!
> >>>>
> >>>> On 17.05.2023 21:06, Fyodor Kravchenko wrote:
> >>>>> Hi, thanks but this
> >>>>>
> >>>>> .............................
> >>>>> Netbeans uses the following command to run the program:
> >>>>>
> >>>>> cd /home/fedd/NetBeansProjects/camelmaintry;
> >>>>> JAVA_HOME=/home/fedd/Programs/graalvm-ce-java19-22.3.0
> >>>>> /snap/netbeans/76/netbeans/java/maven/bin/mvn -Dexec.vmArgs=
> >>>>> "-Dexec.args=${exec.vmArgs} -classpath %classpath ${exec.mainClass}
> >>>>> ${exec.appArgs}" -Dexec.appArgs=
> >>>>> -Dexec.mainClass=camelmaintry.CamelMainTry
> >>>>>
> -Dexec.executable=/home/fedd/Programs/graalvm-ce-java19-22.3.0/bin/java
> >>>>> org.codehaus.mojo:exec-maven-plugin:3.1.0:exec
> >>>>>
> >>>>> (nothing special in the "exec.mainClass" and other placeholders
> there)
> >>>>>
> >>>>> I can't grasp how to make it look into this pattern:
> >>>>>
> >>>>> deploy/**/PRIVATE/EXCHANGE/*.yaml
> >>>>>
> >>>>> Thanks!
> >>>>> --fedd
> >>>>>
> >>>>> On 17.05.2023 20:15, Claus Ibsen wrote:
> >>>>>> Hi
> >>>>>>
> >>>>>> Okay for file system, you should favour prefixing with file:
> >>>>>>
> >>>>>>
> >>
> main.configure().withRoutesIncludePattern("file:deploy/customer/PRIVATE/EXCHANGE/*.yaml");
> >>>>>>
> >>>>>> On Wed, May 17, 2023 at 3:53 PM Fyodor Kravchenko
> >>>>>> <feddkr...@hotmail.com>
> >>>>>> wrote:
> >>>>>>
> >>>>>>> Hi,
> >>>>>>>
> >>>>>>> I'm trying to load the routes from the file system directly, it's
> >> Camel
> >>>>>>> 3.20.4, and it's java 19 from the GraalVM distribution running on
> >>>>>>> Ubuntu
> >>>>>>> 22.04. The fact it sees the file when no wildcard is present tells
> me
> >>>>>>> that I'm missing something in the wildcards and the docs.
> >>>>>>>
> >>>>>>> Thank you!
> >>>>>>>
> >>>>>>> --fedd
> >>>>>>>
> >>>>>>> (sorry for the late response, only now I've got the rejection
> >>>>>>> notification for the html-formatted email)
> >>>>>>>
> >>>>>>> On 15.05.2023 11:01, Claus Ibsen wrote:
> >>>>>>>> Hi
> >>>>>>>>
> >>>>>>>> Are you loading these files from classpath or file system
> directly.
> >>>>>>>> And what Camel version do you use
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> On Sun, May 14, 2023 at 5:39 PM Fyodor Kravchenko
> >>>>>>>> <feddkr...@hotmail.com
> >>>>>>>>
> >>>>>>>> wrote:
> >>>>>>>>
> >>>>>>>>> Hello,
> >>>>>>>>>
> >>>>>>>>> in my little test I'm trying the following,
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>> public class CamelMainTry {
> >>>>>>>>> public static void main(String[] args) throws Exception
> {
> >>>>>>>>> Main main = new Main();
> >>>>>>>>> // this works but I need to catch more
> >>>>>>>>> //
> >>>>>>>>>
> >>>>>>>>>
> >>
> main.configure().withRoutesIncludePattern("deploy/customer/PRIVATE/EXCHANGE/*.yaml");
> >>>>>>>>> // these don't work:'
> >>>>>>>>> //
> >>>>>>>>>
> >>>>>>>>>
> >>
> main.configure().withRoutesIncludePattern("deploy/**/PRIVATE/EXCHANGE/*.yaml");
> >>>>
> >>
> main.configure().withRoutesIncludePattern("deploy/*/PRIVATE/EXCHANGE/*.yaml");
> >>>>>>>>> main.run();
> >>>>>>>>> }
> >>>>>>>>> }
> >>>>>>>>>
> >>>>>>>>> my files are located:
> >>>>>>>>>
> >>>>>>>>> deploy/customer/PRIVATE/EXCHANGE/cust.yaml
> >>>>>>>>>
> >>>>>>>>> deploy/register/bank/PRIVATE/EXCHANGE/reg.yaml
> >>>>>>>>>
> >>>>>>>>> So there could be more directories in the middle; however it
> >> doesn't
> >>>>>>>>> substitute even one.
> >>>>>>>>>
> >>>>>>>>> The Ant-style (or what I'm thinking the Ant style) pattern
> doesn't
> >>>>>>>>> seem
> >>>>>>>>> to catch multiple directories. If I specify the directory
> >>>>>>>>> explicitly it
> >>>>>>>>> works, but I need it to locate the routes in dozens of
> directories.
> >>>>>>>>>
> >>>>>>>>> How do I fix it?
> >>>>>>>>>
> >>>>>>>>> (While we're at it I would also like to make it reload on the fly
> >> for
> >>>>>>>>> the testing purposes, not all of the .yaml files but restricting
> >>>>>>>>> it to
> >>>>>>>>> my directory structure)
> >>>>>>>>>
> >>>>>>>>> Thanks!
> >>>>>>>>>
> >>>>>>>>> --fedd
> >>>>>>>>>
> >>>>>>>>>
> >>>>>>>>>
> >
>
--
Claus Ibsen
-----------------
@davsclaus
Camel in Action 2: https://www.manning.com/ibsen2
