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Deployment Sequence Diagram.uml
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Authored by mmodell on Jun 2 2015, 11:14 AM.
# render with https://www.websequencediagrams.com/
Participant User
Participant Deployment System as dep
Participant Application as app
Participant Load Balancer as lb
Participant Canary as canary
Participant App Servers as as
User -> dep: login
User -> dep: start deployment
dep -> app: pre-deployment
note over app: run pre-deploy hooks
dep -> app: Checkpoint:\nCreate Release Tag\n"$version"
app -> canary: transfer
dep -> lb: depool canary
dep -> canary: trigger deployment of $version
note over canary: set active=$version
note over canary: run tests
canary -> dep: test results
alt test pass
dep -> lb: re-pool canary
dep -> User: Report success
else test fail
dep -> canary: reset active version
dep -> User: Report failure
end
loop for each target $server
app -> as: transfer
dep -> lb: depool $server
note over as: set active=$version
note over as: run tests
as -> dep: test results
dep -> dep: calculate failure rate
dep -> dep: if failure > threshold,\nrollback and abort
dep -> lb: repool $server
dep -> User: report progress
end
dep -> User: done

Event Timeline

mmodell edited the content of this paste. (Show Details)Jun 2 2015, 11:14 AM
mmodell changed the title of this paste from untitled to Deployment Sequence Diagram.uml.
mmodell updated the paste's language from autodetect to autodetect.
mmodell changed the edit policy from "All Users" to "Release-Engineering-Team (Project)".
mmodell added a project: Deployments.
hashar added a subscriber: hashar.Jun 2 2015, 4:47 PM

That is nice. We can probably add it to mediawiki/tools/releng.git which ends up being published to https://doc.wikimedia.org/mw-tools-releng/devdeployflow/index.html

That uses https://pypi.python.org/pypi/seqdiag/

example: http://blockdiag.com/en/seqdiag/index.html

We did with greg ages ago