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add session affinity support for weighted routing with istio

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Add `.spec.analysis.sessionAffinity` to configure session affinity for
weighted routing. Add support for session affinity in the Istio router,
using the `Set-Cookie` and `Cookie` headers.

Signed-off-by: Sanskar Jaiswal <jaiswalsanskar078@gmail.com>
This commit is contained in:
Sanskar Jaiswal
2022-11-10 13:17:16 +05:30
parent 882286dce7
commit a496b99d6e
10 changed files with 296 additions and 47 deletions
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artifacts/flagger/crd.yaml
+18
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@@ -1020,6 +1020,18 @@ spec:
type: object
additionalProperties:
type: string
sessionAffinity:
description: SessionAffinity represents the session affinity settings for a canary run.
type: object
required: [ "cookieName" ]
properties:
cookieName:
description: CookieName is the key that will be used for the session affinity cookie.
type: string
maxAge:
description: MaxAge indicates the number of seconds until the session affinity cookie will expire.
default: 86400
type: number
status:
description: CanaryStatus defines the observed state of a canary.
type: object
@@ -1064,6 +1076,12 @@ spec:
description: LastTransitionTime of this canary
format: date-time
type: string
sessionAffinityCookie:
description: Session affinity cookie of the current canary run
type: string
previousSessionAffinityCookie:
description: Session affinity cookie of the previous canary run
type: string
conditions:
description: Status conditions of this canary
type: array