// 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
}
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
}