rclone/fs/rc/registry.go
2020-06-25 11:38:24 +01:00

79 lines
1.9 KiB
Go

// Define the registry
package rc
import (
"context"
"sort"
"strings"
"sync"
"github.com/rclone/rclone/fs"
)
// Func defines a type for a remote control function
type Func func(ctx context.Context, in Params) (out Params, err error)
// Call defines info about a remote control function and is used in
// the Add function to create new entry points.
type Call struct {
Path string // path to activate this RC
Fn Func `json:"-"` // function to call
Title string // help for the function
AuthRequired bool // if set then this call requires authorisation to be set
Help string // multi-line markdown formatted help
NeedsRequest bool // if set then this call will be passed the original request object as _request
}
// Registry holds the list of all the registered remote control functions
type Registry struct {
mu sync.RWMutex
call map[string]*Call
}
// NewRegistry makes a new registry for remote control functions
func NewRegistry() *Registry {
return &Registry{
call: make(map[string]*Call),
}
}
// Add a call to the registry
func (r *Registry) Add(call Call) {
r.mu.Lock()
defer r.mu.Unlock()
call.Path = strings.Trim(call.Path, "/")
call.Help = strings.TrimSpace(call.Help)
fs.Debugf(nil, "Adding path %q to remote control registry", call.Path)
r.call[call.Path] = &call
}
// Get a Call from a path or nil
func (r *Registry) Get(path string) *Call {
r.mu.RLock()
defer r.mu.RUnlock()
return r.call[path]
}
// List of all calls in alphabetical order
func (r *Registry) List() (out []*Call) {
r.mu.RLock()
defer r.mu.RUnlock()
var keys []string
for key := range r.call {
keys = append(keys, key)
}
sort.Strings(keys)
for _, key := range keys {
out = append(out, r.call[key])
}
return out
}
// Calls is the global registry of Call objects
var Calls = NewRegistry()
// Add a function to the global registry
func Add(call Call) {
Calls.Add(call)
}