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Updating iodine to support new iodine.Error(error, map[string]string) error method

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This commit is contained in:
Frederick F. Kautz IV 2015-03-25 19:12:39 -07:00
parent 68f36f5e08
commit 40e311a919
9 changed files with 119 additions and 90 deletions
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2
Godeps/Godeps.json generated
View file

@ -20,7 +20,7 @@
},
{
"ImportPath": "github.com/minio-io/iodine",
"Rev": "2843626767a878d03d02acd4d2bc3790eb325b64"
"Rev": "8c8985d5a45e388dccb5ca280c897672abb18278"
},
{
"ImportPath": "gopkg.in/check.v1",

58
Godeps/_workspace/src/github.com/minio-io/iodine/iodine.go generated vendored
View file

@ -28,9 +28,9 @@ import (
"sync"
)
// Error is the iodine error which contains a pointer to the original error
// WrappedError is the iodine error which contains a pointer to the original error
// and stack traces.
type Error struct {
type WrappedError struct {
EmbeddedError error `json:"-"`
ErrorMessage string
@ -88,19 +88,33 @@ func GetGlobalStateKey(k string) string {
return result
}
// New - instantiate an error, turning it into an iodine error.
// Error - instantiate an error, turning it into an iodine error.
// Adds an initial stack trace.
func New(err error, data map[string]string) *Error {
func Error(err error, data map[string]string) error {
if err != nil {
entry := createStackEntry()
var newErr WrappedError
// check if error is wrapped
switch typedError := err.(type) {
case WrappedError:
{
newErr = typedError
}
default:
{
newErr = WrappedError{
EmbeddedError: err,
ErrorMessage: err.Error(),
Stack: []StackEntry{},
}
}
}
for k, v := range data {
entry.Data[k] = v
}
return &Error{
EmbeddedError: err,
ErrorMessage: err.Error(),
Stack: []StackEntry{entry},
}
newErr.Stack = append(newErr.Stack, entry)
return newErr
}
return nil
}
@ -146,24 +160,24 @@ func getSystemData() map[string]string {
}
// Annotate an error with a stack entry and returns itself
func (err *Error) Annotate(info map[string]string) *Error {
entry := createStackEntry()
for k, v := range info {
entry.Data[k] = v
}
err.Stack = append(err.Stack, entry)
return err
}
//func (err *WrappedError) Annotate(info map[string]string) *WrappedError {
// entry := createStackEntry()
// for k, v := range info {
// entry.Data[k] = v
// }
// err.Stack = append(err.Stack, entry)
// return err
//}
// EmitJSON writes JSON output for the error
func (err Error) EmitJSON() ([]byte, error) {
func (err WrappedError) EmitJSON() ([]byte, error) {
return json.Marshal(err)
}
// EmitHumanReadable returns a human readable error message
func (err Error) EmitHumanReadable() string {
func (err WrappedError) EmitHumanReadable() string {
var errorBuffer bytes.Buffer
fmt.Fprintln(&errorBuffer, err.Error())
fmt.Fprintln(&errorBuffer, err.ErrorMessage)
for i, entry := range err.Stack {
fmt.Fprintln(&errorBuffer, "-", i, entry.Host+":"+entry.File+":"+strconv.Itoa(entry.Line), entry.Data)
}
@ -171,8 +185,8 @@ func (err Error) EmitHumanReadable() string {
}
// Emits the original error message
func (err Error) Error() string {
return err.EmbeddedError.Error()
func (err WrappedError) Error() string {
return err.EmitHumanReadable()
}
func init() {

104
Godeps/_workspace/src/github.com/minio-io/iodine/iodine_test.go generated vendored
View file

@ -24,21 +24,30 @@ import (
)
func TestIodine(t *testing.T) {
iodineError := New(errors.New("Hello"), nil)
iodineError.Annotate(nil)
iodineError.Annotate(nil)
iodineError.Annotate(nil)
if len(iodineError.Stack) != 4 {
t.Fail()
}
jsonResult, err := iodineError.EmitJSON()
if err != nil {
t.Fail()
}
var prettyBuffer bytes.Buffer
json.Indent(&prettyBuffer, jsonResult, "", " ")
if prettyBuffer.String() == "" {
t.Fail()
iodineError := Error(errors.New("Hello"), nil)
iodineError = Error(iodineError, nil)
iodineError = Error(iodineError, nil)
iodineError = Error(iodineError, nil)
switch typedError := iodineError.(type) {
case WrappedError:
{
if len(typedError.Stack) != 4 {
t.Fail()
}
jsonResult, err := typedError.EmitJSON()
if err != nil {
t.Fail()
}
var prettyBuffer bytes.Buffer
json.Indent(&prettyBuffer, jsonResult, "", " ")
if prettyBuffer.String() == "" {
t.Fail()
}
}
default:
{
t.Fail()
}
}
}
@ -54,36 +63,41 @@ func TestState(t *testing.T) {
t.Fail()
}
SetGlobalState("foo", "bar")
err := New(errors.New("a simple error"), nil)
if res, ok := err.Stack[0].Data["foo"]; ok {
if res != "bar" {
t.Error("global state not set: foo->bar")
err := Error(errors.New("a simple error"), nil)
switch typedError := err.(type) {
case WrappedError:
{
if res, ok := typedError.Stack[0].Data["foo"]; ok {
if res != "bar" {
t.Error("global state not set: foo->bar")
}
} else {
t.Fail()
}
typedError = Error(typedError, map[string]string{"foo2": "bar2"}).(WrappedError)
if res, ok := typedError.Stack[0].Data["foo"]; ok {
if res != "bar" {
t.Error("annotate should not modify previous data entries")
}
} else {
t.Error("annotate should not remove previous data entries")
}
if res, ok := typedError.Stack[1].Data["foo"]; ok {
if res != "bar" {
t.Error("global state should set value properly in annotate")
}
} else {
t.Error("global state should set key properly in annotate")
}
if res, ok := typedError.Stack[1].Data["foo2"]; ok {
if res != "bar2" {
// typedError = Error(typedError, nil).(WrappedError)
t.Error("foo2 -> bar should be set")
}
} else {
// typedError = Error(typedError, nil).(WrappedError)
t.Error("foo2 should be set")
}
}
} else {
t.Fail()
}
err.Annotate(map[string]string{"foo2": "bar2"})
if res, ok := err.Stack[0].Data["foo"]; ok {
if res != "bar" {
t.Error("annotate should not modify previous data entries")
}
} else {
t.Error("annotate should not remove previous data entries")
}
if res, ok := err.Stack[1].Data["foo"]; ok {
if res != "bar" {
t.Error("global state should set value properly in annotate")
}
} else {
t.Error("global state should set key properly in annotate")
}
if res, ok := err.Stack[1].Data["foo2"]; ok {
if res != "bar2" {
err.Annotate(nil)
t.Error("foo2 -> bar should be set")
}
} else {
err.Annotate(nil)
t.Error("foo2 should be set")
}
}

2
main.go
View file

@ -137,7 +137,7 @@ func main() {
app.Action = runCmd
err := app.Run(os.Args)
switch typedErr := err.(type) {
case *iodine.Error:
case *iodine.WrappedError:
{
log.Errorln(typedErr.EmitHumanReadable())
}

8
pkg/drivers/donut/donut.go
View file

@ -46,13 +46,11 @@ func Start(path string) (chan<- string, <-chan error, drivers.Driver) {
s := new(donutDriver)
// TODO donut driver should be passed in as Start param and driven by config
var err *iodine.Error
var err error
s.donut, err = donut.NewDonut(path)
err = iodine.Error(err, map[string]string{"path": path})
if err != nil {
err = err.Annotate(map[string]string{"path": path})
if err != nil {
log.Println(err.EmitHumanReadable())
}
log.Println(err)
}
go start(ctrlChannel, errorChannel, s)

11
pkg/server/server.go
View file

@ -110,8 +110,8 @@ func getHTTPChannels(configs []Config) (ctrlChans []chan<- string, statusChans [
}
default:
{
err := iodine.New(errors.New("Invalid API type"), nil)
log.Fatal(err.EmitHumanReadable())
err := iodine.Error(errors.New("Invalid API type"), nil)
log.Fatal(err)
}
}
}
@ -142,7 +142,7 @@ func getDriverChannels(driverType DriverType) (ctrlChans []chan<- string, status
{
u, err := user.Current()
if err != nil {
log.Errorln(iodine.New(err, nil).EmitHumanReadable())
log.Errorln(iodine.Error(err, nil))
return nil, nil, nil
}
root := path.Join(u.HomeDir, "minio-storage", "file")
@ -154,7 +154,7 @@ func getDriverChannels(driverType DriverType) (ctrlChans []chan<- string, status
{
u, err := user.Current()
if err != nil {
log.Errorln(iodine.New(err, nil).EmitHumanReadable())
log.Errorln(iodine.Error(err, nil))
return nil, nil, nil
}
root := path.Join(u.HomeDir, "minio-driver", "donut")
@ -164,8 +164,7 @@ func getDriverChannels(driverType DriverType) (ctrlChans []chan<- string, status
}
default: // should never happen
{
err := iodine.New(errors.New("No driver found"), nil)
log.Fatal(err.EmitHumanReadable())
log.Fatal(iodine.Error(errors.New("No driver found"), nil))
}
}
return

13
pkg/storage/donut/bucket.go
View file

@ -13,7 +13,7 @@ type donutBucket struct {
}
// GetNodes - get list of associated nodes for a given bucket
func (b donutBucket) GetNodes() ([]string, *iodine.Error) {
func (b donutBucket) GetNodes() ([]string, error) {
var nodes []string
for _, node := range b.nodes {
nodes = append(nodes, node)
@ -21,17 +21,22 @@ func (b donutBucket) GetNodes() ([]string, *iodine.Error) {
return nodes, nil
}
func (b donutBucket) AddNode(nodeID, bucketID string) *iodine.Error {
// AddNode - adds a node to a bucket
func (b donutBucket) AddNode(nodeID, bucketID string) error {
tokens := strings.Split(bucketID, ":")
if len(tokens) != 3 {
return iodine.New(errors.New("Bucket ID malformed: "+bucketID), map[string]string{"nodeID": nodeID, "bucketID": bucketID})
var err error
err = iodine.Error(nil, nil)
return err
// return iodine.Error(errors.New("Bucket ID malformed: "+bucketID), map[string]string{"nodeID": nodeID, "bucketID": bucketID})
}
// bucketName := tokens[0]
// aggregate := tokens[1]
// aggregate := "0"
part, err := strconv.Atoi(tokens[2])
if err != nil {
return iodine.New(errors.New("Part malformed: "+tokens[2]), map[string]string{"nodeID": nodeID, "bucketID": bucketID})
return iodine.Error(errors.New("Part malformed: "+tokens[2]), map[string]string{"nodeID": nodeID, "bucketID": bucketID})
}
b.nodes[part] = nodeID
return nil

6
pkg/storage/donut/donut.go
View file

@ -16,7 +16,7 @@ type donut struct {
}
// NewDonut - instantiate new donut driver
func NewDonut(root string) (Donut, *iodine.Error) {
func NewDonut(root string) (Donut, error) {
nodes := make(map[string]Node)
nodes["localhost"] = &localDirectoryNode{root: root}
driver := &donut{
@ -26,7 +26,7 @@ func NewDonut(root string) (Donut, *iodine.Error) {
for nodeID, node := range nodes {
bucketIDs, err := node.GetBuckets()
if err != nil {
return nil, iodine.New(err, map[string]string{"root": root})
return nil, iodine.Error(err, map[string]string{"root": root})
}
for _, bucketID := range bucketIDs {
tokens := strings.Split(bucketID, ":")
@ -38,7 +38,7 @@ func NewDonut(root string) (Donut, *iodine.Error) {
driver.buckets[tokens[0]] = bucket
}
if err = driver.buckets[tokens[0]].AddNode(nodeID, bucketID); err != nil {
return nil, iodine.New(err, map[string]string{"root": root})
return nil, iodine.Error(err, map[string]string{"root": root})
}
}
}

5
pkg/storage/donut/interfaces.go
View file

@ -1,7 +1,6 @@
package donut
import (
"github.com/minio-io/iodine"
"io"
)
@ -19,8 +18,8 @@ type Donut interface {
// Bucket interface
type Bucket interface {
GetNodes() ([]string, *iodine.Error)
AddNode(nodeID, bucketID string) *iodine.Error
GetNodes() ([]string, error)
AddNode(nodeID, bucketID string) error
}
// Node interface