49 lines
1.8 KiB
Lua
49 lines
1.8 KiB
Lua
annotations = {}
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-- obj.annotations is ingress annotations, it is recommended not to remove the part of the lua script, it must be kept
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if ( obj.annotations )
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then
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annotations = obj.annotations
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end
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-- indicates the ingress is nginx canary api
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annotations["nginx.ingress.kubernetes.io/canary"] = "true"
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-- First, set all canary api to nil
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annotations["nginx.ingress.kubernetes.io/canary-by-cookie"] = nil
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annotations["nginx.ingress.kubernetes.io/canary-by-header"] = nil
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annotations["nginx.ingress.kubernetes.io/canary-by-header-pattern"] = nil
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annotations["nginx.ingress.kubernetes.io/canary-by-header-value"] = nil
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annotations["nginx.ingress.kubernetes.io/canary-weight"] = nil
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-- if rollout.spec.strategy.canary.steps.weight is nil, obj.weight will be -1,
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-- then we need remove the canary-weight annotation
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if ( obj.weight ~= "-1" )
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then
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annotations["nginx.ingress.kubernetes.io/canary-weight"] = obj.weight
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end
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-- if don't contains headers, immediate return annotations
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if ( not obj.matches )
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then
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return annotations
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end
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-- headers & cookie apis
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-- traverse matches
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for _,match in ipairs(obj.matches) do
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if match.headers and next(match.headers) ~= nil then
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local header = match.headers[1]
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-- cookie
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if ( header.name == "canary-by-cookie" )
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then
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annotations["nginx.ingress.kubernetes.io/canary-by-cookie"] = header.value
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else
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annotations["nginx.ingress.kubernetes.io/canary-by-header"] = header.name
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-- if regular expression
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if ( header.type == "RegularExpression" )
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then
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annotations["nginx.ingress.kubernetes.io/canary-by-header-pattern"] = header.value
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else
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annotations["nginx.ingress.kubernetes.io/canary-by-header-value"] = header.value
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end
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end
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end
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end
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-- must be return annotations
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return annotations
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