Golang iodine.ToError函數代碼示例

// doList - list all entities inside a folder
func doList(clnt client.Client, recursive bool) error {
	var err error
	for contentCh := range clnt.List(recursive) {
		if contentCh.Err != nil {
			switch err := iodine.ToError(contentCh.Err).(type) {
			// handle this specifically for filesystem
			case client.ISBrokenSymlink:
				console.Errors(ErrorMessage{
					Message: "Failed with",
					Error:   iodine.New(err, nil),
				})
				continue
			}
			if os.IsNotExist(iodine.ToError(contentCh.Err)) || os.IsPermission(iodine.ToError(contentCh.Err)) {
				console.Errors(ErrorMessage{
					Message: "Failed with",
					Error:   iodine.New(contentCh.Err, nil),
				})
				continue
			}
			err = contentCh.Err
			break
		}
		console.Prints(parseContent(contentCh.Content))
	}
	if err != nil {
		return iodine.New(err, map[string]string{"Target": clnt.URL().String()})
	}
	return nil
}

// PutBucketACLHandler - PUT Bucket ACL
// ----------
// This implementation of the PUT operation modifies the bucketACL for authenticated request
func (api Minio) PutBucketACLHandler(w http.ResponseWriter, req *http.Request) {
	// Ticket master block
	{
		op := Operation{}
		op.ProceedCh = make(chan struct{})
		api.OP <- op
		// block until Ticket master gives us a go
		<-op.ProceedCh
	}

	acceptsContentType := getContentType(req)

	// read from 'x-amz-acl'
	aclType := getACLType(req)
	if aclType == unsupportedACLType {
		writeErrorResponse(w, req, NotImplemented, acceptsContentType, req.URL.Path)
		return
	}

	vars := mux.Vars(req)
	bucket := vars["bucket"]

	err := api.Donut.SetBucketMetadata(bucket, map[string]string{"acl": getACLTypeString(aclType)})
	switch iodine.ToError(err).(type) {
	case nil:
		writeSuccessResponse(w, acceptsContentType)
	case donut.BucketNameInvalid:
		writeErrorResponse(w, req, InvalidBucketName, acceptsContentType, req.URL.Path)
	case donut.BucketNotFound:
		writeErrorResponse(w, req, NoSuchBucket, acceptsContentType, req.URL.Path)
	default:
		log.Error.Println(iodine.New(err, nil))
		writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
	}
}

// ListBucketsHandler - GET Service
// -----------
// This implementation of the GET operation returns a list of all buckets
// owned by the authenticated sender of the request.
func (api Minio) ListBucketsHandler(w http.ResponseWriter, req *http.Request) {
	// Ticket master block
	{
		op := Operation{}
		op.ProceedCh = make(chan struct{})
		api.OP <- op
		// block until Ticket master gives us a go
		<-op.ProceedCh
	}

	acceptsContentType := getContentType(req)
	// uncomment this when we have webcli
	// without access key credentials one cannot list buckets
	// if _, err := stripAuth(req); err != nil {
	//	writeErrorResponse(w, req, AccessDenied, acceptsContentType, req.URL.Path)
	//	return
	// }

	buckets, err := api.Donut.ListBuckets()
	switch iodine.ToError(err).(type) {
	case nil:
		// generate response
		response := generateListBucketsResponse(buckets)
		encodedSuccessResponse := encodeSuccessResponse(response, acceptsContentType)
		// write headers
		setCommonHeaders(w, getContentTypeString(acceptsContentType), len(encodedSuccessResponse))
		// write response
		w.Write(encodedSuccessResponse)
	default:
		log.Error.Println(iodine.New(err, nil))
		writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
	}
}

func doCatCmd(sourceURL string) (string, error) {
	sourceClnt, err := source2Client(sourceURL)
	if err != nil {
		return "Unable to create client: " + sourceURL, iodine.New(err, nil)
	}
	reader, size, err := sourceClnt.GetObject(0, 0)
	if err != nil {
		return "Unable to retrieve file: " + sourceURL, iodine.New(err, nil)
	}
	defer reader.Close()
	_, err = io.CopyN(os.Stdout, reader, int64(size))
	if err != nil {
		switch e := iodine.ToError(err).(type) {
		case *os.PathError:
			if e.Err == syscall.EPIPE {
				// stdout closed by the user. Gracefully exit.
				return "", nil
			}
			return "Writing data to stdout failed, unexpected problem.. please report this error", iodine.New(err, nil)
		default:
			return "Reading data from source failed: " + sourceURL, iodine.New(err, nil)
		}
	}
	return "", nil
}

// GET Bucket (List Multipart uploads)
// -------------------------
// This operation lists in-progress multipart uploads. An in-progress
// multipart upload is a multipart upload that has been initiated,
// using the Initiate Multipart Upload request, but has not yet been completed or aborted.
// This operation returns at most 1,000 multipart uploads in the response.
//
func (server *minioAPI) listMultipartUploadsHandler(w http.ResponseWriter, req *http.Request) {
	acceptsContentType := getContentType(req)

	resources := getBucketMultipartResources(req.URL.Query())
	if resources.MaxUploads == 0 {
		resources.MaxUploads = maxObjectList
	}

	vars := mux.Vars(req)
	bucket := vars["bucket"]

	resources, err := server.driver.ListMultipartUploads(bucket, resources)
	switch iodine.ToError(err).(type) {
	case nil: // success
		{
			// generate response
			response := generateListMultipartUploadsResult(bucket, resources)
			encodedSuccessResponse := encodeSuccessResponse(response, acceptsContentType)
			// write headers
			setCommonHeaders(w, getContentTypeString(acceptsContentType), len(encodedSuccessResponse))
			// write body
			w.Write(encodedSuccessResponse)
		}
	case drivers.BucketNotFound:
		{
			writeErrorResponse(w, req, NoSuchBucket, acceptsContentType, req.URL.Path)
		}
	default:
		{
			log.Error.Println(iodine.New(err, nil))
			writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
		}
	}

}

// HEAD Bucket
// ----------
// This operation is useful to determine if a bucket exists.
// The operation returns a 200 OK if the bucket exists and you
// have permission to access it. Otherwise, the operation might
// return responses such as 404 Not Found and 403 Forbidden.
func (server *minioAPI) headBucketHandler(w http.ResponseWriter, req *http.Request) {
	acceptsContentType := getContentType(req)

	vars := mux.Vars(req)
	bucket := vars["bucket"]

	_, err := server.driver.GetBucketMetadata(bucket)
	switch iodine.ToError(err).(type) {
	case nil:
		{
			writeSuccessResponse(w, acceptsContentType)
		}
	case drivers.BucketNotFound:
		{
			error := getErrorCode(NoSuchBucket)
			w.WriteHeader(error.HTTPStatusCode)
		}
	case drivers.BucketNameInvalid:
		{
			error := getErrorCode(InvalidBucketName)
			w.WriteHeader(error.HTTPStatusCode)
		}
	default:
		{
			log.Error.Println(iodine.New(err, nil))
			error := getErrorCode(InternalError)
			w.WriteHeader(error.HTTPStatusCode)
		}
	}
}

// PUT Bucket ACL
// ----------
// This implementation of the PUT operation modifies the bucketACL for authenticated request
func (server *minioAPI) putBucketACLHandler(w http.ResponseWriter, req *http.Request) {
	acceptsContentType := getContentType(req)
	// read from 'x-amz-acl'
	aclType := getACLType(req)
	if aclType == unsupportedACLType {
		writeErrorResponse(w, req, NotImplemented, acceptsContentType, req.URL.Path)
		return
	}

	vars := mux.Vars(req)
	bucket := vars["bucket"]
	err := server.driver.SetBucketMetadata(bucket, getACLTypeString(aclType))
	switch iodine.ToError(err).(type) {
	case nil:
		{
			writeSuccessResponse(w, acceptsContentType)
		}
	case drivers.BucketNameInvalid:
		{
			writeErrorResponse(w, req, InvalidBucketName, acceptsContentType, req.URL.Path)
		}
	case drivers.BucketNotFound:
		{
			writeErrorResponse(w, req, NoSuchBucket, acceptsContentType, req.URL.Path)
		}
	default:
		{
			log.Error.Println(iodine.New(err, nil))
			writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
		}
	}
}

// HeadBucketHandler - HEAD Bucket
// ----------
// This operation is useful to determine if a bucket exists.
// The operation returns a 200 OK if the bucket exists and you
// have permission to access it. Otherwise, the operation might
// return responses such as 404 Not Found and 403 Forbidden.
func (api Minio) HeadBucketHandler(w http.ResponseWriter, req *http.Request) {
	// Ticket master block
	{
		op := Operation{}
		op.ProceedCh = make(chan struct{})
		api.OP <- op
		// block until Ticket master gives us a go
		<-op.ProceedCh
	}

	acceptsContentType := getContentType(req)

	vars := mux.Vars(req)
	bucket := vars["bucket"]

	_, err := api.Donut.GetBucketMetadata(bucket)
	switch iodine.ToError(err).(type) {
	case nil:
		writeSuccessResponse(w, acceptsContentType)
	case donut.BucketNotFound:
		error := getErrorCode(NoSuchBucket)
		w.WriteHeader(error.HTTPStatusCode)
	case donut.BucketNameInvalid:
		error := getErrorCode(InvalidBucketName)
		w.WriteHeader(error.HTTPStatusCode)
	default:
		log.Error.Println(iodine.New(err, nil))
		error := getErrorCode(InternalError)
		w.WriteHeader(error.HTTPStatusCode)
	}
}

func (s *MySuite) TestInvalidTcpAddr(c *C) {
	os.Setenv(envCountKey, "")
	n := &minNet{}
	_, err := n.Listen("tcp", "abc")
	c.Assert(err, Not(IsNil))
	c.Assert(regexp.MustCompile("^missing port in address abc$").MatchString(iodine.ToError(err).Error()), Equals, true)
}

// runListCmd - is a handler for mc ls command
func runListCmd(ctx *cli.Context) {
	args := ctx.Args()
	if globalAliasFlag {
		if !ctx.Args().Present() {
			args = []string{"."}
		}
	} else if !ctx.Args().Present() || ctx.Args().First() == "help" {
		cli.ShowCommandHelpAndExit(ctx, "ls", 1) // last argument is exit code
	}

	config := mustGetMcConfig()
	for _, arg := range args {
		targetURL, err := getExpandedURL(arg, config.Aliases)
		if err != nil {
			switch e := iodine.ToError(err).(type) {
			case errUnsupportedScheme:
				console.Fatalf("Unknown type of URL %s. %s\n", e.url, err)
			default:
				console.Fatalf("Unable to parse argument %s. %s\n", arg, err)
			}
		}
		// if recursive strip off the "..."
		newTargetURL := stripRecursiveURL(targetURL)
		err = doListCmd(newTargetURL, isURLRecursive(targetURL))
		if err != nil {
			console.Fatalf("Failed to list : %s. %s\n", targetURL, err)
		}
	}
}

func runCatCmd(ctx *cli.Context) {
	if !ctx.Args().Present() || ctx.Args().First() == "help" {
		cli.ShowCommandHelpAndExit(ctx, "cat", 1) // last argument is exit code
	}
	if !isMcConfigExists() {
		console.Fatalf("Please run \"mc config generate\". %s\n", errNotConfigured{})
	}
	config := mustGetMcConfig()
	// Convert arguments to URLs: expand alias, fix format...
	for _, arg := range ctx.Args() {
		sourceURL, err := getExpandedURL(arg, config.Aliases)
		if err != nil {
			switch e := iodine.ToError(err).(type) {
			case errUnsupportedScheme:
				console.Fatalf("Unknown type of URL %s. %s\n", e.url, err)
			default:
				console.Fatalf("Unable to parse argument %s. %s\n", arg, err)
			}
		}
		errorMsg, err := doCatCmd(sourceURL)
		if err != nil {
			console.Fatalln(errorMsg)
		}
	}
}

// runMakeBucketCmd is the handler for mc mb command
func runMakeBucketCmd(ctx *cli.Context) {
	if !ctx.Args().Present() || ctx.Args().First() == "help" {
		cli.ShowCommandHelpAndExit(ctx, "mb", 1) // last argument is exit code
	}
	if !isMcConfigExists() {
		console.Fatalf("Please run \"mc config generate\". %s\n", errNotConfigured{})
	}
	config := mustGetMcConfig()
	for _, arg := range ctx.Args() {
		targetURL, err := getExpandedURL(arg, config.Aliases)
		if err != nil {
			switch e := iodine.ToError(err).(type) {
			case errUnsupportedScheme:
				console.Fatalf("Unknown type of URL %s. %s\n", e.url, err)
			default:
				console.Fatalf("Unable to parse argument %s. %s\n", arg, err)
			}
		}
		msg, err := doMakeBucketCmd(targetURL)
		if err != nil {
			console.Fatalln(msg)
		}
		console.Infoln(msg)
	}
}

// AbortMultipartUploadHandler - Abort multipart upload
func (api Minio) AbortMultipartUploadHandler(w http.ResponseWriter, req *http.Request) {
	// Ticket master block
	{
		op := Operation{}
		op.ProceedCh = make(chan struct{})
		api.OP <- op
		// block until Ticket master gives us a go
		<-op.ProceedCh
	}

	acceptsContentType := getContentType(req)
	if !api.isValidOp(w, req, acceptsContentType) {
		return
	}

	vars := mux.Vars(req)
	bucket := vars["bucket"]
	object := vars["object"]

	objectResourcesMetadata := getObjectResources(req.URL.Query())

	err := api.Donut.AbortMultipartUpload(bucket, object, objectResourcesMetadata.UploadID)
	switch iodine.ToError(err).(type) {
	case nil:
		setCommonHeaders(w, getContentTypeString(acceptsContentType), 0)
		w.WriteHeader(http.StatusNoContent)
	case donut.InvalidUploadID:
		writeErrorResponse(w, req, NoSuchUpload, acceptsContentType, req.URL.Path)
	default:
		log.Error.Println(iodine.New(err, nil))
		writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
	}
}

// GET Service
// -----------
// This implementation of the GET operation returns a list of all buckets
// owned by the authenticated sender of the request.
func (server *minioAPI) listBucketsHandler(w http.ResponseWriter, req *http.Request) {
	acceptsContentType := getContentType(req)
	// uncomment this when we have webcli
	// without access key credentials one cannot list buckets
	// if _, err := stripAuth(req); err != nil {
	//	writeErrorResponse(w, req, AccessDenied, acceptsContentType, req.URL.Path)
	//	return
	// }
	buckets, err := server.driver.ListBuckets()
	switch iodine.ToError(err).(type) {
	case nil:
		{
			// generate response
			response := generateListBucketsResponse(buckets)
			encodedSuccessResponse := encodeSuccessResponse(response, acceptsContentType)
			// write headers
			setCommonHeaders(w, getContentTypeString(acceptsContentType), len(encodedSuccessResponse))
			// write response
			w.Write(encodedSuccessResponse)
		}
	default:
		{
			log.Error.Println(iodine.New(err, nil))
			writeErrorResponse(w, req, InternalError, acceptsContentType, req.URL.Path)
		}
	}
}

func (s *MySuite) TestInvalidNetwork(c *C) {
	os.Setenv(envCountKey, "")
	n := &minNet{}
	_, err := n.Listen("foo", "")
	c.Assert(err, Not(IsNil))
	c.Assert(regexp.MustCompile("^unknown network foo$").MatchString(iodine.ToError(err).Error()), Equals, true)
}