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Code Issues Releases Wiki Activity

Use define & template for re-usable blocks of upstream server template

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This commit is contained in:
Viranch Mehta 2015-07-15 20:51:10 +05:30
parent 784507df1a
commit 4f5351265a
1 changed files with 19 additions and 21 deletions
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40
nginx.tmpl
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@ -1,3 +1,20 @@
{{ define "upstream" }}
{{ if .Address }}
{{/* If we got the containers from swarm and this container's port is published to host, use host IP:PORT */}}
{{ if and .Container.Node.ID .Address.HostPort }}
# {{ .Container.Node.Name }}/{{ .Container.Name }}
server {{ .Container.Node.Address.IP }}:{{ .Address.HostPort }};
{{/* If there is no swarm node or the port is not published on host, use container's IP:PORT */}}
{{ else }}
# {{ .Container.Name }}
server {{ .Address.IP }}:{{ .Address.Port }};
{{ end }}
{{ else }}
# {{ .Container.Name }}
server {{ .Container.IP }} down;
{{ end }}
{{ end }}
# If we receive X-Forwarded-Proto, pass it through; otherwise, pass along the
# scheme used to connect to this server
map $http_x_forwarded_proto $proxy_x_forwarded_proto {
@ -45,31 +62,12 @@ upstream {{ $host }} {
{{/* If only 1 port exposed, use that */}}
{{ if eq $addrLen 1 }}
{{ $address := index $container.Addresses 0 }}
{{/* If we got the containers from swarm and this container's port is published to host, use host IP:PORT */}}
{{ if and $container.Node $address.HostPort }}
# {{ $container.Node.Name }}/{{$container.Name}}
server {{ $container.Node.Address.IP }}:{{ $address.HostPort }};
{{/* If there is no swarm node or the port is not published on host, use container's IP:PORT */}}
{{ else }}
# {{$container.Name}}
server {{ $address.IP }}:{{ $address.Port }};
{{ end }}
{{ template "upstream" (dict "Container" $container "Address" $address) }}
{{/* If more than one port exposed, use the one matching VIRTUAL_PORT env var, falling back to standard web port 80 */}}
{{ else }}
{{ $port := coalesce $container.Env.VIRTUAL_PORT "80" }}
{{ $address := where $container.Addresses "Port" $port | first }}
{{ if $address }}
{{ if and $container.Node $address.HostPort }}
# {{ $container.Node.Name }}/{{$container.Name}}
server {{ $container.Node.Address.IP }}:{{ $address.HostPort }};
{{ else }}
# {{$container.Name}}
server {{ $address.IP }}:{{ $address.Port }};
{{ end }}
{{ else }}
# {{$container.Name}}
server {{ $container.IP }} down;
{{ end }}
{{ template "upstream" (dict "Container" $container "Address" $address) }}
{{ end }}
{{ end }}
}