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keys.go
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keys.go
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package keys
import (
"fmt"
"io/ioutil"
"time"
"github.com/hyperledger/burrow/keys"
"github.com/hyperledger/burrow/logging"
)
type LocalKeyClient struct {
keys.KeyClient
}
const DefaultKeysHost = "localhost"
const DefaultKeysPort = "10997"
var keysTimeout = 5 * time.Second
func DefaultKeysURL() string {
return fmt.Sprintf("%s:%s", DefaultKeysHost, DefaultKeysPort)
}
// Returns an initialized key client to a docker container
// running the keys server
// Adding the Ip address is optional and should only be used
// for passing data
func InitKeyClient(keysUrl string) (*LocalKeyClient, error) {
aliveCh := make(chan struct{})
localKeyClient, err := keys.NewRemoteKeyClient(keysUrl, logging.NewNoopLogger())
if err != nil {
return nil, err
}
err = localKeyClient.HealthCheck()
go func() {
for err != nil {
err = localKeyClient.HealthCheck()
}
aliveCh <- struct{}{}
}()
select {
case <-time.After(keysTimeout):
return nil, fmt.Errorf("keys instance did not become responsive after %s: %v", keysTimeout, err)
case <-aliveCh:
return &LocalKeyClient{localKeyClient}, nil
}
}
// Keyclient returns a list of keys that it is aware of.
// params:
// host - search for keys on the host
// container - search for keys on the container
// quiet - don't print output, just return the list you find
func (keys *LocalKeyClient) ListKeys(keysPath string, quiet bool, logger *logging.Logger) ([]string, error) {
var result []string
addrs, err := ioutil.ReadDir(keysPath)
if err != nil {
return nil, err
}
for _, addr := range addrs {
result = append(result, addr.Name())
}
if !quiet {
if len(addrs) == 0 {
logger.InfoMsg("No keys found on host")
} else {
// First key.
logger.InfoMsg("The keys on host", result)
}
}
return result, nil
}