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Improve generated default name for @JmsListener subscription #29790

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Improve generated default name for @JmsListener subscription #29790

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@fml2 fml2 commented Jan 10, 2023 •
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This should fix #29763.

@spring-projects-issues spring-projects-issues added the status: waiting-for-triage An issue we've not yet triaged or decided on label Jan 10, 2023
@sbrannen sbrannen added in: messaging Issues in messaging modules (jms, messaging) type: enhancement A general enhancement labels Jan 11, 2023
@sbrannen sbrannen changed the title fix (spring-jms): Better default name for a JMS subscription Improve generated default name for a JMS subscription Jan 11, 2023
@sbrannen sbrannen mentioned this pull request Jan 11, 2023
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@sbrannen sbrannen removed the status: waiting-for-triage An issue we've not yet triaged or decided on label Jan 11, 2023
@sbrannen sbrannen added this to the 6.0.5 milestone Jan 11, 2023
@sbrannen sbrannen self-assigned this Jan 11, 2023
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fml2 commented Jan 11, 2023

Could this also be backported to the 5.x line?

sbrannen pushed a commit to sbrannen/spring-framework that referenced this pull request Jan 30, 2023
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Improve generated default name for a JMS subscription
145efa8 
Closes spring-projectsgh-29790
sbrannen added a commit to sbrannen/spring-framework that referenced this pull request Jan 30, 2023
@sbrannen
Revised generated default name for a JMS subscription
7e09f91 
The previous commit changed the generated default name for a JMS
subscription to <FQCN>#<method name> -- for example:

- org.example.MyListener#myListenerMethod

In order to generate unique subscription names for overloaded listener
methods within a class, this commit retains the <FQCN>#<method name>
format for a method that declares zero parameters but changes the format
to <FQCN>#<method name>(<parameter list>) for methods that declare
parameters, where the parameter list is a comma-separated list of the
canonical names of the parameter types -- for example:

- org.example.MyListener#myListenerMethod
- org.example.MyListener#myListenerMethod(java.lang.String)
- org.example.MyListener#myListenerMethod(byte[])
- org.example.MyListener#myListenerMethod(byte[],java.lang.String)

See spring-projectsgh-29790
@sbrannen sbrannen changed the title Improve generated default name for a JMS subscription Improve generated default name for @JmsListener subscription Jan 30, 2023
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As a proof of concept, I pushed changes to main...sbrannen:spring-framework:issues/gh-29790-default-jms-subscription-name that include the method signature in the generated subscription name (in order to generate unique subscription names for overloaded @JmsListener methods).

However, before pushing those changes I decided to verify the requirements of a subscription name in the JMS 3.0 spec. That points out that characters such as (, ), ,, and # are not guaranteed to be supported. In addition, there's only a guarantee of support for up to 128 characters.

In light of that, I have decided to use a <FQCN>.<method name> (FQCN: fully qualified class name) format instead of the <FQCN>#<method name> format in this PR.

@sbrannen sbrannen closed this in ad4e0d9 Jan 30, 2023
sbrannen added a commit that referenced this pull request Jan 30, 2023
@sbrannen
Revise generated default name for @JmsListener subscription
04321d0 
The previous commit changed the generated default name for a JMS
subscription to <FQCN>#<method name> -- for example:

- org.example.MyListener#myListenerMethod

However, the JMS spec does not guarantee that '#' is a supported
character. This commit therefore changes '#' to '.' as the separator
between the class name and method name -- for example:

- org.example.MyListener.myListenerMethod

This commit also introduces tests and documentation for these changes.

See gh-29790
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Could this also be backported to the 5.x line?

Yes, we will backport this to 5.3.x.

@sbrannen sbrannen added for: backport-to-5.3.x status: backported An issue that has been backported to maintenance branches and removed for: backport-to-5.3.x labels Jan 30, 2023
@sbrannen sbrannen mentioned this pull request Jan 30, 2023
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fml2 commented Jan 30, 2023

In light of that, I have decided to use a <FQCN>.<method name> (FQCN: fully qualified class name) format instead of the <FQCN>#<method name> format in this PR.

This is perfectly OK for me. The main thing is that the name is meaningful and not fixed and is equal to the name of a rather internal Spring class.

sbrannen added a commit that referenced this pull request Jan 31, 2023
@sbrannen
Update release version due to backport
ebe717f 
See gh-29790
See gh-29902
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This has been merged into main in ad4e0d9 and revised in 04321d0.

@fml2 fml2 deleted the feat/default-jms-subsr-name branch January 31, 2023 20:38
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in: messaging Issues in messaging modules (jms, messaging) status: backported An issue that has been backported to maintenance branches type: enhancement A general enhancement
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Wrong default name of the JMS subscription
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