8000 api: add undocumented /grpc endpoint available since API 1.40 by tiborvass · Pull Request #2944 · docker-archive/classicswarm · GitHub
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api: add undocumented /grpc endpoint available since API 1.40 #2944

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api: add undocumented /grpc endpoint available since API 1.40 #2944

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20 changes: 20 additions & 0 deletions api/handlers.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1670,3 +1670,23 @@ func stripNodeNamesFromNetworkingConfig(n network.NetworkingConfig, nodeNames []
n.EndpointsConfig = endpointsConfig
return n
}

// postGRPC randomly chooses a node on the cluster and hijacks that connection.
func postGRPC(c *context, w http.ResponseWriter, r *http.Request) {
engine, err := c.cluster.RANDOMENGINE()
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Not ideal, but seems acceptable for the time being.

if err != nil {
httpError(w, err.Error(), http.StatusInternalServerError)
return
}

if engine == nil {
httpError(w, "no node available in the cluster", http.StatusInternalServerError)
return
}

err = hijack(c.tlsConfig, engine.Addr, w, r)
engine.CheckConnectionErr(err)
if err != nil {
httpError(w, err.Error(), http.StatusInternalServerError)
}
}
1 change: 1 addition & 0 deletions api/primary.go
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Expand Up @@ -84,6 +84,7 @@ var routes = map[string]map[string]handler{
"/networks/{networkid:.*}/connect": proxyNetworkConnect,
"/networks/{networkid:.*}/disconnect": networkDisconnect,
"/volumes/create": postVolumesCreate,
"/grpc": postGRPC,

// TODO(dperny): this route is WIP, remove this comment
"/session": postSession,
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