412cd70d3a
Adds the ability to create alternative backends. Alternative backends enable traffic shaping by sharing a single location but routing to different backends depending on the TrafficShapingPolicy defined by AlternativeBackends. When the list of upstreams and servers are retrieved, we then call mergeAlternativeBackends which iterates through the paths of every ingress and checks if the backend supporting the path is a AlternativeBackend. If so, we then iterate through the map of servers and find the real backend that the AlternativeBackend should fall under. Once found, the AlternativeBackend is embedded in the list of VirtualBackends for the real backend. If no matching real backend for a AlternativeBackend is found, then the AlternativeBackend is deleted as it cannot be backed by any server.
25 lines
501 B
Lua
25 lines
501 B
Lua
local util = require("util")
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local _M = {}
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function _M.new(self, o)
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o = o or {}
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setmetatable(o, self)
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self.__index = self
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return o
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end
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function _M.sync(self, backend)
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self.traffic_shaping_policy = backend.trafficShapingPolicy
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self.alternative_backends = backend.alternativeBackends
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local nodes = util.get_nodes(backend.endpoints)
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local changed = not util.deep_compare(self.instance.nodes, nodes)
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if not changed then
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return
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end
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self.instance:reinit(nodes)
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end
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return _M
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