func FindPeer(n *core.IpfsNode, cmdparts []string) (string, error) {
out := new(bytes.Buffer)
if len(cmdparts) < 3 {
return fmt.Sprintln("findpeer: '# findpeer peerid'"), ErrArgCount
}
var search peer.ID
if cmdparts[2][0] == '$' {
n, err := strconv.Atoi(cmdparts[2][1:])
if err != nil {
return "", err
}
if n >= len(controllers) {
return "", errors.New("specified peernum out of range")
}
search = controllers[n].PeerID()
} else {
search = peer.ID(b58.Decode(cmdparts[2]))
}
fmt.Fprintf(out, "Searching for peer: %s\n", search)
ctx, _ := context.WithDeadline(context.TODO(), time.Now().Add(time.Second*5))
p, err := n.Routing.FindPeer(ctx, search)
if err != nil {
return "", err
}
fmt.Fprintf(out, "%Got peer: %s\n", p)
return out.String(), nil
}
func Put(n *core.IpfsNode, cmdparts []string) (string, error) {
if len(cmdparts) < 4 {
return fmt.Sprintln("put: '# put key val'"), ErrArgCount
}
msg := fmt.Sprintf("putting value: '%s' for key '%s'\n", cmdparts[3], cmdparts[2])
ctx, _ := context.WithDeadline(context.TODO(), time.Now().Add(time.Second*5))
return msg, n.Routing.PutValue(ctx, u.Key(cmdparts[2]), []byte(cmdparts[3]))
}
func Provide(n *core.IpfsNode, cmdparts []string) (string, error) {
if len(cmdparts) < 3 {
return fmt.Sprintln("provide: '# provide key'"), ErrArgCount
}
ctx, _ := context.WithDeadline(context.TODO(), time.Now().Add(time.Second*5))
err := n.Routing.Provide(ctx, u.Key(cmdparts[2]))
if err != nil {
return "", err
}
return "", nil
}
func Get(n *core.IpfsNode, cmdparts []string) (string, error) {
if len(cmdparts) < 3 {
return fmt.Sprintln("get: '# get key'"), ErrArgCount
}
ctx, _ := context.WithDeadline(context.TODO(), time.Now().Add(time.Second*5))
val, err := n.Routing.GetValue(ctx, u.Key(cmdparts[2]))
if err != nil {
return "", err
}
return fmt.Sprintf("Got value: '%s'\n", string(val)), nil
}
func AssertGet(n *core.IpfsNode, key, exp string) bool {
ctx, _ := context.WithDeadline(context.TODO(), time.Now().Add(time.Second*5))
val, err := n.Routing.GetValue(ctx, u.Key(key))
if err != nil {
fmt.Printf("Get error: %s\n", err)
return false
}
if string(val) != exp {
fmt.Printf("expected '%s' but got '%s' instead.\n", exp, string(val))
return false
}
if !logquiet {
fmt.Println("Expectation Successful!")
}
return true
}
func FindProv(n *core.IpfsNode, cmdparts []string) (string, error) {
if len(cmdparts) < 3 {
return fmt.Sprintln("findprov: '# findprov key [count]'"), ErrArgCount
}
count := 1
var err error
if len(cmdparts) >= 4 {
count, err = strconv.Atoi(cmdparts[3])
if err != nil {
return "", err
}
}
ctx, _ := context.WithDeadline(context.TODO(), time.Now().Add(time.Second*5))
pchan := n.Routing.FindProvidersAsync(ctx, u.Key(cmdparts[2]), count)
out := new(bytes.Buffer)
fmt.Fprintf(out, "Providers of '%s'\n", cmdparts[2])
for p := range pchan {
fmt.Fprintf(out, "\t%s\n", p)
}
return out.String(), nil
}
// Call sends the request, waits for it to complete, and returns its error status.
func (client *Client) Call(ctx context.Context, req proto.Message, resp proto.Message) error {
// Setup a new call
call := &Call{
Req: req,
Resp: resp,
cancelc: make(chan interface{}),
}
// Make sure a service name is passed
if serviceName, ok := ServiceNameFromContext(ctx); !ok {
return ErrServiceNameMissing
} else {
call.Service = serviceName
}
// If a manual deadline is not passed, setup with default timeout
if _, ok := ctx.Deadline(); !ok {
ctx, _ = context.WithDeadline(ctx, time.Now().Add(RequestTimeout))
}
// Run the request in a goroutine and write the reponse to c
c := make(chan error, 1)
go func() { c <- client.send(ctx, call) }()
select {
// Use context done to manually trigger cancel
case <-ctx.Done():
// Cancel the request in flight
call.cancelc <- true
<-c // Wait for the request to finish
if ctx.Err() == context.DeadlineExceeded {
return ErrTimeout
}
return ctx.Err()
// Request finished
case err := <-c:
return err
}
}
// ForkWithTimeout returns a ForkContext which adds a t deadline to the supplied
// context.
func ForkWithDeadline(t time.Time) ForkContext {
return func(c context.Context) (context.Context, context.CancelFunc) {
return context.WithDeadline(c, t)
}
}