package schema import ( "fmt" "log" "time" "github.com/hashicorp/terraform/terraform" "github.com/mitchellh/copystructure" ) const TimeoutKey = "e2bfb730-ecaa-11e6-8f88-34363bc7c4c0" const TimeoutsConfigKey = "timeouts" const ( TimeoutCreate = "create" TimeoutRead = "read" TimeoutUpdate = "update" TimeoutDelete = "delete" TimeoutDefault = "default" ) func timeoutKeys() []string { return []string{ TimeoutCreate, TimeoutRead, TimeoutUpdate, TimeoutDelete, TimeoutDefault, } } // could be time.Duration, int64 or float64 func DefaultTimeout(tx interface{}) *time.Duration { var td time.Duration switch raw := tx.(type) { case time.Duration: return &raw case int64: td = time.Duration(raw) case float64: td = time.Duration(int64(raw)) default: log.Printf("[WARN] Unknown type in DefaultTimeout: %#v", tx) } return &td } type ResourceTimeout struct { Create, Read, Update, Delete, Default *time.Duration } // ConfigDecode takes a schema and the configuration (available in Diff) and // validates, parses the timeouts into `t` func (t *ResourceTimeout) ConfigDecode(s *Resource, c *terraform.ResourceConfig) error { if s.Timeouts != nil { raw, err := copystructure.Copy(s.Timeouts) if err != nil { log.Printf("[DEBUG] Error with deep copy: %s", err) } *t = *raw.(*ResourceTimeout) } if raw, ok := c.Config[TimeoutsConfigKey]; ok { if configTimeouts, ok := raw.([]map[string]interface{}); ok { for _, timeoutValues := range configTimeouts { // loop through each Timeout given in the configuration and validate they // the Timeout defined in the resource for timeKey, timeValue := range timeoutValues { // validate that we're dealing with the normal CRUD actions var found bool for _, key := range timeoutKeys() { if timeKey == key { found = true break } } if !found { return fmt.Errorf("Unsupported Timeout configuration key found (%s)", timeKey) } // Get timeout rt, err := time.ParseDuration(timeValue.(string)) if err != nil { return fmt.Errorf("Error parsing Timeout for (%s): %s", timeKey, err) } var timeout *time.Duration switch timeKey { case TimeoutCreate: timeout = t.Create case TimeoutUpdate: timeout = t.Update case TimeoutRead: timeout = t.Read case TimeoutDelete: timeout = t.Delete case TimeoutDefault: timeout = t.Default } // If the resource has not delcared this in the definition, then error // with an unsupported message if timeout == nil { return unsupportedTimeoutKeyError(timeKey) } *timeout = rt } } } else { log.Printf("[ERROR] Invalid timeout structure: %T", raw) return fmt.Errorf("Invalid Timeout structure found") } } return nil } func unsupportedTimeoutKeyError(key string) error { return fmt.Errorf("Timeout Key (%s) is not supported", key) } // DiffEncode, StateEncode, and MetaDecode are analogous to the Go stdlib JSONEncoder // interface: they encode/decode a timeouts struct from an instance diff, which is // where the timeout data is stored after a diff to pass into Apply. // // StateEncode encodes the timeout into the ResourceData's InstanceState for // saving to state // func (t *ResourceTimeout) DiffEncode(id *terraform.InstanceDiff) error { return t.metaEncode(id) } func (t *ResourceTimeout) StateEncode(is *terraform.InstanceState) error { return t.metaEncode(is) } // metaEncode encodes the ResourceTimeout into a map[string]interface{} format // and stores it in the Meta field of the interface it's given. // Assumes the interface is either *terraform.InstanceState or // *terraform.InstanceDiff, returns an error otherwise func (t *ResourceTimeout) metaEncode(ids interface{}) error { m := make(map[string]interface{}) if t.Create != nil { m[TimeoutCreate] = t.Create.Nanoseconds() } if t.Read != nil { m[TimeoutRead] = t.Read.Nanoseconds() } if t.Update != nil { m[TimeoutUpdate] = t.Update.Nanoseconds() } if t.Delete != nil { m[TimeoutDelete] = t.Delete.Nanoseconds() } if t.Default != nil { m[TimeoutDefault] = t.Default.Nanoseconds() // for any key above that is nil, if default is specified, we need to // populate it with the default for _, k := range timeoutKeys() { if _, ok := m[k]; !ok { m[k] = t.Default.Nanoseconds() } } } // only add the Timeout to the Meta if we have values if len(m) > 0 { switch instance := ids.(type) { case *terraform.InstanceDiff: if instance.Meta == nil { instance.Meta = make(map[string]interface{}) } instance.Meta[TimeoutKey] = m case *terraform.InstanceState: if instance.Meta == nil { instance.Meta = make(map[string]interface{}) } instance.Meta[TimeoutKey] = m default: return fmt.Errorf("Error matching type for Diff Encode") } } return nil } func (t *ResourceTimeout) StateDecode(id *terraform.InstanceState) error { return t.metaDecode(id) } func (t *ResourceTimeout) DiffDecode(is *terraform.InstanceDiff) error { return t.metaDecode(is) } func (t *ResourceTimeout) metaDecode(ids interface{}) error { var rawMeta interface{} var ok bool switch rawInstance := ids.(type) { case *terraform.InstanceDiff: rawMeta, ok = rawInstance.Meta[TimeoutKey] if !ok { return nil } case *terraform.InstanceState: rawMeta, ok = rawInstance.Meta[TimeoutKey] if !ok { return nil } default: return fmt.Errorf("Unknown or unsupported type in metaDecode: %#v", ids) } times := rawMeta.(map[string]interface{}) if len(times) == 0 { return nil } if v, ok := times[TimeoutCreate]; ok { t.Create = DefaultTimeout(v) } if v, ok := times[TimeoutRead]; ok { t.Read = DefaultTimeout(v) } if v, ok := times[TimeoutUpdate]; ok { t.Update = DefaultTimeout(v) } if v, ok := times[TimeoutDelete]; ok { t.Delete = DefaultTimeout(v) } if v, ok := times[TimeoutDefault]; ok { t.Default = DefaultTimeout(v) } return nil }