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Add example RabbitMQ configuration and user files
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This is (at time of commit) the current rabbitmq configuration being applied
at Diamond, and an example of the folder to use for user generation.

Addresses request in #181.
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ndevenish committed Sep 6, 2023
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1 change: 1 addition & 0 deletions HISTORY.rst
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Unreleased
----------
* Add example rabbitmq configuration and user files to ``contrib/`` (`#245 <https://github.com/DiamondLightSource/python-zocalo/pull/245>`_)

0.30.2 (2023-09-06)
-------------------
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164 changes: 164 additions & 0 deletions contrib/rabbitmq-configuration.yaml
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---
# RabbitMQ Configuration
#
# This is a snapshot of the active rabbitmq configuration used for the
# zocalo deployment at Diamond.
#
# This file is used to declare RabbitMQ queues and their configuration.
# Jenkins parses this file using the Python script in this directory to
# generate and deploy the actual RabbitMQ configuration.
#
# Queues are grouped together in groups, within a group every queue has
# the same settings. It is possible to optionally influence the RabbitMQ
# queue, exchange, and bindings settings per group.

# Note that no VHost is declared here - at time of writing, this is not
# handled very gracefully and changes are applied by deleting the VHost;
# which causes all queues, outstanding messages to be deleted.
#
# If you understand these risks and want to specify the vhost in this
# file, you can specify vhost as:
# # vhosts:
# # - zocalo


exchanges:
- name: delayed
vhost: zocalo
type: x-delayed-message
arguments:
x-delayed-type: direct
- name: results
vhost: zocalo
type: topic

policies:
- name: redelivery
definition:
delivery-limit: 5
vhost: zocalo
pattern: .*

- name: ttl
definition:
delivery-limit: 5
message-ttl: 60000
vhost: zocalo
priority: 1
pattern: ^xrc.*

- name: immediate
definition:
# delivery-limit: 5
message-ttl: 0
vhost: zocalo
priority: 1
pattern: per_image_analysis.ssx

- name: dlq
definition:
dead-letter-exchange: ''
vhost: zocalo

groups:

# No-prefetch queues
# These are the workhorse queues of Zocalo. Any listener will only get a
# single message from these queues, and only get the next message after
# acknowledging/rejecting the previous one.
- names:
- archive.filelist
- archive.pattern
- cluster.submission
- darc.dropzone
- dispatcher
- filewatcher
- htcondorwatcher
- images
- index
- ispyb_connector
- ispyb_pia
- mailnotification
- mimas
- mimas.held
- nexusparser.find_related_files
- notify_gda
- per_image_analysis
- per_image_analysis.hdf5_select
- processing_recipe
- pymca.fitter
- relion.dev.stop
- ssx.plot
- transient.destination
- transient.transaction
# - transient.system_test.{guid}
- trigger
- validation
- bridge.test

settings:
queues:
type: quorum
dead-letter-routing-key-pattern: dlq.{name}
bindings:
- ''
- delayed
vhost: zocalo

- names:
- per_image_analysis.ssx

settings:
queues:
type: quorum
# dead-letter-routing-key-pattern: per_image_analysis
# dead-letter-queue-create: false
bindings:
- ''
vhost: zocalo

# Single active consumer queues
# Every queue in this group only allows a single listener to read from the
# queue at any one time. That listener gets all the messages from the queue
# at once.
# https://www.rabbitmq.com/consumers.html#single-active-consumer
- names:
- reduce.dc_sim
- reduce.xray_centering
- statistics.cluster
- jsonlines
settings:
queues:
type: quorum
dead-letter-routing-key-pattern: dlq.{name}
single_active_consumer: true
bindings:
- ''
- delayed
vhost: zocalo

# Broadcast topics
# This is TBC. I suspect we can do something cleverer here, eg. have
# temporary queues tied to each connection or something like that.
- names:
- command
- transient.status
- transient.statistics.cluster
settings:
broadcast: true
queues:
type: quorum
vhost: zocalo

- names:
- xrc.i03
settings:
queues:
type: quorum
dead-letter-queue-create: false
vhost: zocalo

bindings:
- source: results
destination: xrc.i03
vhost: zocalo
8 changes: 8 additions & 0 deletions contrib/rabbitmq_users/README.md
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# RabbitMQ Users Specification

The ini-files in this folder are examples of the folder used by the
`zocalo.configure_rabbitmq` tool. Use as:

```
zocalo.configure_rabbitmq rabbitmq-configuration.yaml --user-config <THIS FOLDER>
```
4 changes: 4 additions & 0 deletions contrib/rabbitmq_users/custom-user.ini
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[rabbitmq]
username = custom
password = custompass
tags = administrator

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