// SetupIfMatcher parses `if` or `if_op` in the current dispenser block.
// It returns a RequestMatcher and an error if any.
func SetupIfMatcher(c caddyfile.Dispenser) (RequestMatcher, error) {
var matcher IfMatcher
for c.NextBlock() {
switch c.Val() {
case "if":
args1 := c.RemainingArgs()
if len(args1) != 3 {
return matcher, c.ArgErr()
}
ifc, err := newIfCond(args1[0], args1[1], args1[2])
if err != nil {
return matcher, err
}
matcher.ifs = append(matcher.ifs, ifc)
case "if_op":
if !c.NextArg() {
return matcher, c.ArgErr()
}
switch c.Val() {
case "and":
matcher.isOr = false
case "or":
matcher.isOr = true
default:
return matcher, c.ArgErr()
}
}
}
return matcher, nil
}
// NewStaticUpstreams parses the configuration input and sets up
// static upstreams for the proxy middleware.
func NewStaticUpstreams(c caddyfile.Dispenser) ([]Upstream, error) {
var upstreams []Upstream
for c.Next() {
upstream := &staticUpstream{
from: "",
upstreamHeaders: make(http.Header),
downstreamHeaders: make(http.Header),
Hosts: nil,
Policy: &Random{},
MaxFails: 1,
TryInterval: 250 * time.Millisecond,
MaxConns: 0,
KeepAlive: http.DefaultMaxIdleConnsPerHost,
}
if !c.Args(&upstream.from) {
return upstreams, c.ArgErr()
}
var to []string
for _, t := range c.RemainingArgs() {
parsed, err := parseUpstream(t)
if err != nil {
return upstreams, err
}
to = append(to, parsed...)
}
for c.NextBlock() {
switch c.Val() {
case "upstream":
if !c.NextArg() {
return upstreams, c.ArgErr()
}
parsed, err := parseUpstream(c.Val())
if err != nil {
return upstreams, err
}
to = append(to, parsed...)
default:
if err := parseBlock(&c, upstream); err != nil {
return upstreams, err
}
}
}
if len(to) == 0 {
return upstreams, c.ArgErr()
}
upstream.Hosts = make([]*UpstreamHost, len(to))
for i, host := range to {
uh, err := upstream.NewHost(host)
if err != nil {
return upstreams, err
}
upstream.Hosts[i] = uh
}
if upstream.HealthCheck.Path != "" {
upstream.HealthCheck.Client = http.Client{
Timeout: upstream.HealthCheck.Timeout,
}
go upstream.HealthCheckWorker(nil)
}
upstreams = append(upstreams, upstream)
}
return upstreams, nil
}
