func (f *CPUFingerprint) Fingerprint(cfg *config.Config, node *structs.Node) (bool, error) {
if err := stats.Init(); err != nil {
return false, fmt.Errorf("Unable to obtain CPU information: %v", err)
}
modelName := stats.CPUModelName()
if modelName != "" {
node.Attributes["cpu.modelname"] = modelName
}
mhz := stats.CPUMHzPerCore()
node.Attributes["cpu.frequency"] = fmt.Sprintf("%.0f", mhz)
f.logger.Printf("[DEBUG] fingerprint.cpu: frequency: %.0f MHz", mhz)
numCores := stats.CPUNumCores()
node.Attributes["cpu.numcores"] = fmt.Sprintf("%d", numCores)
f.logger.Printf("[DEBUG] fingerprint.cpu: core count: %d", numCores)
tt := stats.TotalTicksAvailable()
node.Attributes["cpu.totalcompute"] = fmt.Sprintf("%.0f", tt)
if node.Resources == nil {
node.Resources = &structs.Resources{}
}
node.Resources.CPU = int(tt)
return true, nil
}
// dockerClients creates two *docker.Client, one for long running operations and
// the other for shorter operations. In test / dev mode we can use ENV vars to
// connect to the docker daemon. In production mode we will read docker.endpoint
// from the config file.
func (d *DockerDriver) dockerClients() (*docker.Client, *docker.Client, error) {
if client != nil && waitClient != nil {
return client, waitClient, nil
}
var err error
var merr multierror.Error
createClients.Do(func() {
if err = shelpers.Init(); err != nil {
d.logger.Printf("[FATAL] driver.docker: unable to initialize stats: %v", err)
return
}
// Default to using whatever is configured in docker.endpoint. If this is
// not specified we'll fall back on NewClientFromEnv which reads config from
// the DOCKER_* environment variables DOCKER_HOST, DOCKER_TLS_VERIFY, and
// DOCKER_CERT_PATH. This allows us to lock down the config in production
// but also accept the standard ENV configs for dev and test.
dockerEndpoint := d.config.Read("docker.endpoint")
if dockerEndpoint != "" {
cert := d.config.Read("docker.tls.cert")
key := d.config.Read("docker.tls.key")
ca := d.config.Read("docker.tls.ca")
if cert+key+ca != "" {
d.logger.Printf("[DEBUG] driver.docker: using TLS client connection to %s", dockerEndpoint)
client, err = docker.NewTLSClient(dockerEndpoint, cert, key, ca)
} else {
d.logger.Printf("[DEBUG] driver.docker: using standard client connection to %s", dockerEndpoint)
client, err = docker.NewClient(dockerEndpoint)
}
client.HTTPClient.Timeout = dockerTimeout
return
}
d.logger.Println("[DEBUG] driver.docker: using client connection initialized from environment")
client, err = docker.NewClientFromEnv()
if err != nil {
merr.Errors = append(merr.Errors, err)
}
client.HTTPClient.Timeout = dockerTimeout
waitClient, err = docker.NewClientFromEnv()
if err != nil {
merr.Errors = append(merr.Errors, err)
}
})
return client, waitClient, merr.ErrorOrNil()
}
// NewExecutor returns an Executor
func NewExecutor(logger *log.Logger) Executor {
if err := shelpers.Init(); err != nil {
logger.Printf("[FATAL] executor: unable to initialize stats: %v", err)
return nil
}
exec := &UniversalExecutor{
logger: logger,
processExited: make(chan interface{}),
totalCpuStats: stats.NewCpuStats(),
userCpuStats: stats.NewCpuStats(),
systemCpuStats: stats.NewCpuStats(),
pids: make(map[int]*nomadPid),
}
return exec
}
