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Document how set traffic to the latest revision #498

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Mar 28, 2024
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Document how set traffic to the latest revision #498

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7 changes: 7 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -215,6 +215,13 @@ jobs:
revision_traffic: 'my-revision=10' # percentage
```

To update traffic to the latest revision, use the special tag "LATEST":

```yaml
with:
revision_traffic: 'LATEST=100'
```

- `tag_traffic`: (Optional, mutually-exclusive with `revision_traffic`)
Comma-separated list of tag traffic assignments.

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16 changes: 11 additions & 5 deletions action.yml
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Expand Up @@ -123,16 +123,22 @@ inputs:

revision_traffic:
description: |-
Comma separated list of traffic assignments in the form REVISION-NAME=PERCENTAGE.
REVISION-NAME must be the name for a revision for the service as returned
by 'gcloud beta run list revisions'. PERCENTAGE must be an integer
percentage between 0 and 100 inclusive.
Ex service-nw9hs=10,service-nw9hs=20 Up to 100 percent of traffic may be
Comma separated list of traffic assignments in the form
REVISION-NAME=PERCENTAGE. REVISION-NAME must be the name for a revision
for the service as returned by 'gcloud beta run list revisions'.
PERCENTAGE must be an integer percentage between 0 and 100 inclusive. Ex
service-nw9hs=10,service-nw9hs=20 Up to 100 percent of traffic may be
assigned. If 100 percent of traffic is assigned, the Service traffic is
updated as specified. If under 100 percent of traffic is assigned, the
Service traffic is updated as specified for revisions with assignments and
traffic is scaled up or down down proportionally as needed for revision
that are currently serving traffic but that do not have new assignments.
For example assume revision-1 is serving 40 percent of traffic and
revision-2 is serving 60 percent. If revision-1 is assigned 45 percent of
traffic and no assignment is made for revision-2, the service is updated
with revsion-1 assigned 45 percent of traffic and revision-2 scaled down
to 55 percent. You can use "LATEST" as a special revision name to always
put the given percentage of traffic on the latest ready revision
required: false

tag_traffic:
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