iodine is part of minio now

pkg/api/api_bucket_handlers.go

@@ -20,7 +20,7 @@ import (
 	"net/http"
 
 	"github.com/gorilla/mux"
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 	"github.com/minio-io/minio/pkg/storage/drivers"
 	"github.com/minio-io/minio/pkg/utils/log"
 )

pkg/api/api_object_handlers.go

@@ -20,7 +20,7 @@ import (
 	"net/http"
 
 	"github.com/gorilla/mux"
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 	"github.com/minio-io/minio/pkg/storage/drivers"
 	"github.com/minio-io/minio/pkg/utils/log"
 )

pkg/api/api_policy_handlers.go

@@ -21,7 +21,7 @@ import (
 	"net/http"
 
 	"github.com/gorilla/mux"
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 	"github.com/minio-io/minio/pkg/storage/drivers"
 	"github.com/minio-io/minio/pkg/utils/log"
 )

pkg/api/api_router.go

@@ -21,8 +21,8 @@ import (
 	"net/http"
 
 	router "github.com/gorilla/mux"
-	"github.com/minio-io/iodine"
 	"github.com/minio-io/minio/pkg/api/config"
+	"github.com/minio-io/minio/pkg/iodine"
 	"github.com/minio-io/minio/pkg/storage/drivers"
 )
 

pkg/api/config/config.go

@@ -24,7 +24,7 @@ import (
 	"path"
 	"sync"
 
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 )
 
 // Config context

pkg/api/web/web.go

@@ -23,8 +23,8 @@ import (
 	"path"
 
 	"github.com/gorilla/mux"
-	"github.com/minio-io/iodine"
 	"github.com/minio-io/minio/pkg/api/config"
+	"github.com/minio-io/minio/pkg/iodine"
 	"github.com/minio-io/minio/pkg/utils/crypto/keys"
 	"github.com/minio-io/minio/pkg/utils/log"
 )

pkg/iodine/.gitignore

@@ -0,0 +1,24 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+*.test
+*.prof

pkg/iodine/LICENSE

@@ -0,0 +1,202 @@
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
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+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
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+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
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+
+   4. Redistribution. You may reproduce and distribute copies of the
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+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
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+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
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+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
+      replaced with your own identifying information. (Don't include
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+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
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+
+   Copyright {yyyy} {name of copyright owner}
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+

pkg/iodine/README.md

@@ -0,0 +1,2 @@
+# iodine
+Iodine is an error logging framework for tracing errors.

pkg/iodine/iodine.go

@@ -0,0 +1,208 @@
+/*
+ * Iodine, (C) 2015 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package iodine
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"os"
+	"path"
+	"reflect"
+	"runtime"
+	"strconv"
+	"strings"
+	"sync"
+
+	"github.com/dustin/go-humanize"
+)
+
+// Error is the iodine error which contains a pointer to the original error
+// and stack traces.
+type Error struct {
+	EmbeddedError error `json:"-"`
+	ErrorMessage  string
+	ErrorType     string
+
+	Stack []StackEntry
+}
+
+// StackEntry contains the entry in the stack trace
+type StackEntry struct {
+	Host string
+	File string
+	Func string
+	Line int
+	Data map[string]string
+}
+
+var gopath string
+
+var globalState = struct {
+	sync.RWMutex
+	m map[string]string
+}{m: make(map[string]string)}
+
+// SetGlobalState - set global state
+func SetGlobalState(key, value string) {
+	globalState.Lock()
+	globalState.m[key] = value
+	globalState.Unlock()
+}
+
+// ClearGlobalState - clear info in globalState struct
+func ClearGlobalState() {
+	globalState.Lock()
+	for k := range globalState.m {
+		delete(globalState.m, k)
+	}
+	globalState.Unlock()
+}
+
+// GetGlobalState - get map from globalState struct
+func GetGlobalState() map[string]string {
+	result := make(map[string]string)
+	globalState.RLock()
+	for k, v := range globalState.m {
+		result[k] = v
+	}
+	globalState.RUnlock()
+	return result
+}
+
+// GetGlobalStateKey - get value for key from globalState struct
+func GetGlobalStateKey(k string) string {
+	result, ok := globalState.m[k]
+	if !ok {
+		return ""
+	}
+	return result
+}
+
+// New - instantiate an error, turning it into an iodine error.
+// Adds an initial stack trace.
+func New(err error, data map[string]string) error {
+	if err != nil {
+		entry := createStackEntry()
+		var newErr Error
+
+		// check if error is wrapped
+		switch typedError := err.(type) {
+		case Error:
+			{
+				newErr = typedError
+			}
+		default:
+			{
+				newErr = Error{
+					EmbeddedError: err,
+					ErrorMessage:  err.Error(),
+					ErrorType:     reflect.TypeOf(err).String(),
+					Stack:         []StackEntry{},
+				}
+			}
+		}
+		for k, v := range data {
+			entry.Data[k] = v
+		}
+		newErr.Stack = append(newErr.Stack, entry)
+		return newErr
+	}
+	return nil
+}
+
+// createStackEntry - create stack entries
+func createStackEntry() StackEntry {
+	host, _ := os.Hostname()
+	pc, file, line, _ := runtime.Caller(2)
+	function := runtime.FuncForPC(pc).Name()
+	_, function = path.Split(function)
+	file = strings.TrimPrefix(file, gopath) // trim gopath from file
+
+	data := GetGlobalState()
+	for k, v := range getSystemData() {
+		data[k] = v
+	}
+
+	entry := StackEntry{
+		Host: host,
+		File: file,
+		Func: function,
+		Line: line,
+		Data: data,
+	}
+	return entry
+}
+
+func getSystemData() map[string]string {
+	host, err := os.Hostname()
+	if err != nil {
+		host = ""
+	}
+	memstats := &runtime.MemStats{}
+	runtime.ReadMemStats(memstats)
+	return map[string]string{
+		"sys.host":               host,
+		"sys.os":                 runtime.GOOS,
+		"sys.arch":               runtime.GOARCH,
+		"sys.go":                 runtime.Version(),
+		"sys.cpus":               strconv.Itoa(runtime.NumCPU()),
+		"sys.mem.used":           humanize.Bytes(memstats.Alloc),
+		"sys.mem.allocated":      humanize.Bytes(memstats.TotalAlloc),
+		"sys.mem.heap.used":      humanize.Bytes(memstats.HeapAlloc),
+		"sys.mem.heap.allocated": humanize.Bytes(memstats.HeapSys),
+	}
+}
+
+// Annotate an error with a stack entry and returns itself
+//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) {
+	return json.Marshal(err)
+}
+
+// EmitHumanReadable returns a human readable error message
+func (err Error) EmitHumanReadable() string {
+	var errorBuffer bytes.Buffer
+	fmt.Fprintln(&errorBuffer, err.ErrorMessage)
+	for i, entry := range err.Stack {
+		prettyData, _ := json.Marshal(entry.Data)
+		fmt.Fprintln(&errorBuffer, "-", i, entry.Host+":"+entry.File+":"+strconv.Itoa(entry.Line)+" "+entry.Func+"():", string(prettyData))
+	}
+	return string(errorBuffer.Bytes())
+}
+
+// Emits the original error message
+func (err Error) Error() string {
+	return err.EmitHumanReadable()
+}
+
+func init() {
+	_, iodineFile, _, _ := runtime.Caller(0)
+	iodineFile = path.Dir(iodineFile)   // trim iodine.go
+	iodineFile = path.Dir(iodineFile)   // trim iodine
+	iodineFile = path.Dir(iodineFile)   // trim minio-io
+	gopath = path.Dir(iodineFile) + "/" // trim github.com
+}

pkg/iodine/iodine_test.go

@@ -0,0 +1,103 @@
+/*
+ * Iodine, (C) 2015 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package iodine
+
+import (
+	"errors"
+	"fmt"
+	"testing"
+
+	"encoding/json"
+)
+
+func TestIodine(t *testing.T) {
+	iodineError := New(errors.New("Hello"), nil)
+	iodineError = New(iodineError, nil)
+	iodineError = New(iodineError, nil)
+	iodineError = New(iodineError, nil)
+
+	switch typedError := iodineError.(type) {
+	case Error:
+		{
+			// Visually watch out for formating errors
+			fmt.Println(typedError.EmitHumanReadable())
+
+			if len(typedError.Stack) != 4 {
+				t.Fail()
+			}
+			_, err := json.MarshalIndent(typedError, "", "  ")
+			if err != nil {
+				t.Fail()
+			}
+		}
+	default:
+		{
+			t.Fail()
+		}
+	}
+}
+
+func TestState(t *testing.T) {
+	SetGlobalState("hello", "world")
+	result := GetGlobalStateKey("hello")
+	if result != "world" {
+		t.Error("global state not set: hello->world")
+		t.Fail()
+	}
+	ClearGlobalState()
+	if len(GetGlobalState()) != 0 {
+		t.Fail()
+	}
+	SetGlobalState("foo", "bar")
+	err := New(errors.New("a simple error"), nil)
+	switch typedError := err.(type) {
+	case Error:
+		{
+			if res, ok := typedError.Stack[0].Data["foo"]; ok {
+				if res != "bar" {
+					t.Error("global state not set: foo->bar")
+				}
+			} else {
+				t.Fail()
+			}
+			typedError = New(typedError, map[string]string{"foo2": "bar2"}).(Error)
+			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")
+			}
+		}
+	}
+}

pkg/server/server.go

@@ -24,9 +24,9 @@ import (
 
 	"errors"
 
-	"github.com/minio-io/iodine"
 	"github.com/minio-io/minio/pkg/api"
 	"github.com/minio-io/minio/pkg/api/web"
+	"github.com/minio-io/minio/pkg/iodine"
 	"github.com/minio-io/minio/pkg/server/httpserver"
 	"github.com/minio-io/minio/pkg/storage/drivers"
 	"github.com/minio-io/minio/pkg/storage/drivers/donut"

pkg/storage/donut/donut.go

@@ -19,7 +19,7 @@ package donut
 import (
 	"errors"
 
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 )
 
 // donut struct internal data

pkg/storage/donut/donut_bucket.go

@@ -29,7 +29,7 @@ import (
 	"crypto/md5"
 	"encoding/hex"
 
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 )
 
 // internal struct carrying bucket specific information

pkg/storage/donut/donut_bucket_internal.go

@@ -29,7 +29,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 	"github.com/minio-io/minio/pkg/utils/split"
 )
 

pkg/storage/donut/donut_disk.go

@@ -24,7 +24,7 @@ import (
 
 	"io/ioutil"
 
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 )
 
 // internal disk struct

pkg/storage/donut/donut_encoder.go

@@ -20,8 +20,8 @@ import (
 	"errors"
 	"strconv"
 
-	"github.com/minio-io/iodine"
 	encoding "github.com/minio-io/minio/pkg/erasure"
+	"github.com/minio-io/minio/pkg/iodine"
 )
 
 // encoder internal struct

pkg/storage/donut/donut_node.go

@@ -19,7 +19,7 @@ package donut
 import (
 	"errors"
 
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 )
 
 // node struct internal

pkg/storage/donut/donut_rebalance.go

@@ -21,7 +21,7 @@ import (
 	"os"
 	"strings"
 
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 )
 
 // Rebalance -

pkg/storage/donut/management.go

@@ -5,7 +5,7 @@ import (
 	"errors"
 	"path"
 
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 )
 
 // Heal - heal a donut and fix bad data blocks

pkg/storage/donut/objectstorage.go

@@ -24,7 +24,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 )
 
 // MakeBucket - make a new bucket

pkg/storage/donut/objectstorage_internal.go

@@ -22,7 +22,7 @@ import (
 	"path"
 	"strings"
 
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 )
 
 func (d donut) makeDonutBucket(bucketName string) error {

pkg/storage/drivers/donut/donut.go

@@ -30,7 +30,7 @@ import (
 
 	"io/ioutil"
 
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 	"github.com/minio-io/minio/pkg/storage/donut"
 	"github.com/minio-io/minio/pkg/storage/drivers"
 	"github.com/minio-io/minio/pkg/utils/log"

pkg/storage/drivers/mocks/Driver.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"io"
 
-	"github.com/minio-io/iodine"
+	"github.com/minio-io/minio/pkg/iodine"
 	"github.com/minio-io/minio/pkg/storage/drivers"
 	"github.com/stretchr/testify/mock"
 )