Example #1
0
// remoteExecGetSpec is used to get the exec specification.
// Returns if execution should continue
func (a *Agent) remoteExecGetSpec(event *remoteExecEvent, spec *remoteExecSpec) bool {
	get := structs.KeyRequest{
		Datacenter: a.config.Datacenter,
		Key:        path.Join(event.Prefix, event.Session, remoteExecFileName),
		QueryOptions: structs.QueryOptions{
			AllowStale: true, // Stale read for scale! Retry on failure.
		},
	}
	get.Token = a.config.ACLToken
	var out structs.IndexedDirEntries
QUERY:
	if err := a.RPC("KVS.Get", &get, &out); err != nil {
		a.logger.Printf("[ERR] agent: failed to get remote exec job: %v", err)
		return false
	}
	if len(out.Entries) == 0 {
		// If the initial read was stale and had no data, retry as a consistent read
		if get.QueryOptions.AllowStale {
			a.logger.Printf("[DEBUG] agent: trying consistent fetch of remote exec job spec")
			get.QueryOptions.AllowStale = false
			goto QUERY
		} else {
			a.logger.Printf("[DEBUG] agent: remote exec aborted, job spec missing")
			return false
		}
	}
	if err := json.Unmarshal(out.Entries[0].Value, &spec); err != nil {
		a.logger.Printf("[ERR] agent: failed to decode remote exec spec: %v", err)
		return false
	}
	return true
}
Example #2
0
func getKV(t *testing.T, agent *Agent, key string) *structs.DirEntry {
	req := structs.KeyRequest{
		Datacenter: agent.config.Datacenter,
		Key:        key,
	}
	req.Token = agent.config.ACLToken
	var out structs.IndexedDirEntries
	if err := agent.RPC("KVS.Get", &req, &out); err != nil {
		t.Fatalf("err: %v", err)
	}
	if len(out.Entries) > 0 {
		return out.Entries[0]
	}
	return nil
}