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package setup
import (
"fmt"
"net/http"
"strings"
"github.com/mholt/caddy/config/parse"
"github.com/mholt/caddy/middleware"
"github.com/mholt/caddy/server"
)
// Controller is given to the setup function of middlewares which
// gives them access to be able to read tokens and set config. Each
// virtualhost gets their own server config and dispenser.
type Controller struct {
*server.Config
parse.Dispenser
// OncePerServerBlock is a function that executes f
// exactly once per server block, no matter how many
// hosts are associated with it. If it is the first
// time, the function f is executed immediately
// (not deferred) and may return an error which is
// returned by OncePerServerBlock.
OncePerServerBlock func(f func() error) error
// ServerBlockIndex is the 0-based index of the
// server block as it appeared in the input.
ServerBlockIndex int
// ServerBlockHostIndex is the 0-based index of this
// host as it appeared in the input at the head of the
// server block.
ServerBlockHostIndex int
// ServerBlockHosts is a list of hosts that are
// associated with this server block. All these
// hosts, consequently, share the same tokens.
ServerBlockHosts []string
// ServerBlockStorage is used by a directive's
// setup function to persist state between all
// the hosts on a server block.
ServerBlockStorage interface{}
}
// NewTestController creates a new *Controller for
// the input specified, with a filename of "Testfile".
// The Config is bare, consisting only of a Root of cwd.
//
// Used primarily for testing but needs to be exported so
// add-ons can use this as a convenience. Does not initialize
// the server-block-related fields.
func NewTestController(input string) *Controller {
return &Controller{
Config: &server.Config{
Root: ".",
},
Dispenser: parse.NewDispenser("Testfile", strings.NewReader(input)),
OncePerServerBlock: func(f func() error) error {
return f()
},
}
}
// EmptyNext is a no-op function that can be passed into
// middleware.Middleware functions so that the assignment
// to the Next field of the Handler can be tested.
//
// Used primarily for testing but needs to be exported so
// add-ons can use this as a convenience.
var EmptyNext = middleware.HandlerFunc(func(w http.ResponseWriter, r *http.Request) (int, error) {
return 0, nil
})
// SameNext does a pointer comparison between next1 and next2.
//
// Used primarily for testing but needs to be exported so
// add-ons can use this as a convenience.
func SameNext(next1, next2 middleware.Handler) bool {
return fmt.Sprintf("%v", next1) == fmt.Sprintf("%v", next2)
}
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