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-rw-r--r--src/pkg/expvar/Makefile11
-rw-r--r--src/pkg/expvar/expvar.go288
-rw-r--r--src/pkg/expvar/expvar_test.go128
3 files changed, 0 insertions, 427 deletions
diff --git a/src/pkg/expvar/Makefile b/src/pkg/expvar/Makefile
deleted file mode 100644
index 5619630d1..000000000
--- a/src/pkg/expvar/Makefile
+++ /dev/null
@@ -1,11 +0,0 @@
-# Copyright 2009 The Go Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style
-# license that can be found in the LICENSE file.
-
-include ../../Make.inc
-
-TARG=expvar
-GOFILES=\
- expvar.go\
-
-include ../../Make.pkg
diff --git a/src/pkg/expvar/expvar.go b/src/pkg/expvar/expvar.go
deleted file mode 100644
index 7123d4b0f..000000000
--- a/src/pkg/expvar/expvar.go
+++ /dev/null
@@ -1,288 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package expvar provides a standardized interface to public variables, such
-// as operation counters in servers. It exposes these variables via HTTP at
-// /debug/vars in JSON format.
-//
-// Operations to set or modify these public variables are atomic.
-//
-// In addition to adding the HTTP handler, this package registers the
-// following variables:
-//
-// cmdline os.Args
-// memstats runtime.Memstats
-//
-// The package is sometimes only imported for the side effect of
-// registering its HTTP handler and the above variables. To use it
-// this way, simply link this package into your program:
-// import _ "expvar"
-//
-package expvar
-
-import (
- "bytes"
- "fmt"
- "http"
- "json"
- "log"
- "os"
- "runtime"
- "strconv"
- "sync"
-)
-
-// Var is an abstract type for all exported variables.
-type Var interface {
- String() string
-}
-
-// Int is a 64-bit integer variable that satisfies the Var interface.
-type Int struct {
- i int64
- mu sync.Mutex
-}
-
-func (v *Int) String() string { return strconv.Itoa64(v.i) }
-
-func (v *Int) Add(delta int64) {
- v.mu.Lock()
- defer v.mu.Unlock()
- v.i += delta
-}
-
-func (v *Int) Set(value int64) {
- v.mu.Lock()
- defer v.mu.Unlock()
- v.i = value
-}
-
-// Float is a 64-bit float variable that satisfies the Var interface.
-type Float struct {
- f float64
- mu sync.Mutex
-}
-
-func (v *Float) String() string { return strconv.Ftoa64(v.f, 'g', -1) }
-
-// Add adds delta to v.
-func (v *Float) Add(delta float64) {
- v.mu.Lock()
- defer v.mu.Unlock()
- v.f += delta
-}
-
-// Set sets v to value.
-func (v *Float) Set(value float64) {
- v.mu.Lock()
- defer v.mu.Unlock()
- v.f = value
-}
-
-// Map is a string-to-Var map variable that satisfies the Var interface.
-type Map struct {
- m map[string]Var
- mu sync.Mutex
-}
-
-// KeyValue represents a single entry in a Map.
-type KeyValue struct {
- Key string
- Value Var
-}
-
-func (v *Map) String() string {
- v.mu.Lock()
- defer v.mu.Unlock()
- b := new(bytes.Buffer)
- fmt.Fprintf(b, "{")
- first := true
- for key, val := range v.m {
- if !first {
- fmt.Fprintf(b, ", ")
- }
- fmt.Fprintf(b, "\"%s\": %v", key, val.String())
- first = false
- }
- fmt.Fprintf(b, "}")
- return b.String()
-}
-
-func (v *Map) Init() *Map {
- v.m = make(map[string]Var)
- return v
-}
-
-func (v *Map) Get(key string) Var {
- v.mu.Lock()
- defer v.mu.Unlock()
- return v.m[key]
-}
-
-func (v *Map) Set(key string, av Var) {
- v.mu.Lock()
- defer v.mu.Unlock()
- v.m[key] = av
-}
-
-func (v *Map) Add(key string, delta int64) {
- v.mu.Lock()
- defer v.mu.Unlock()
- av, ok := v.m[key]
- if !ok {
- av = new(Int)
- v.m[key] = av
- }
-
- // Add to Int; ignore otherwise.
- if iv, ok := av.(*Int); ok {
- iv.Add(delta)
- }
-}
-
-// AddFloat adds delta to the *Float value stored under the given map key.
-func (v *Map) AddFloat(key string, delta float64) {
- v.mu.Lock()
- defer v.mu.Unlock()
- av, ok := v.m[key]
- if !ok {
- av = new(Float)
- v.m[key] = av
- }
-
- // Add to Float; ignore otherwise.
- if iv, ok := av.(*Float); ok {
- iv.Add(delta)
- }
-}
-
-// TODO(rsc): Make sure map access in separate thread is safe.
-func (v *Map) iterate(c chan<- KeyValue) {
- for k, v := range v.m {
- c <- KeyValue{k, v}
- }
- close(c)
-}
-
-func (v *Map) Iter() <-chan KeyValue {
- c := make(chan KeyValue)
- go v.iterate(c)
- return c
-}
-
-// String is a string variable, and satisfies the Var interface.
-type String struct {
- s string
-}
-
-func (v *String) String() string { return strconv.Quote(v.s) }
-
-func (v *String) Set(value string) { v.s = value }
-
-// Func implements Var by calling the function
-// and formatting the returned value using JSON.
-type Func func() interface{}
-
-func (f Func) String() string {
- v, _ := json.Marshal(f())
- return string(v)
-}
-
-
-// All published variables.
-var vars map[string]Var = make(map[string]Var)
-var mutex sync.Mutex
-
-// Publish declares an named exported variable. This should be called from a
-// package's init function when it creates its Vars. If the name is already
-// registered then this will log.Panic.
-func Publish(name string, v Var) {
- mutex.Lock()
- defer mutex.Unlock()
- if _, existing := vars[name]; existing {
- log.Panicln("Reuse of exported var name:", name)
- }
- vars[name] = v
-}
-
-// Get retrieves a named exported variable.
-func Get(name string) Var {
- return vars[name]
-}
-
-// RemoveAll removes all exported variables.
-// This is for tests; don't call this on a real server.
-func RemoveAll() {
- mutex.Lock()
- defer mutex.Unlock()
- vars = make(map[string]Var)
-}
-
-// Convenience functions for creating new exported variables.
-
-func NewInt(name string) *Int {
- v := new(Int)
- Publish(name, v)
- return v
-}
-
-func NewFloat(name string) *Float {
- v := new(Float)
- Publish(name, v)
- return v
-}
-
-func NewMap(name string) *Map {
- v := new(Map).Init()
- Publish(name, v)
- return v
-}
-
-func NewString(name string) *String {
- v := new(String)
- Publish(name, v)
- return v
-}
-
-// TODO(rsc): Make sure map access in separate thread is safe.
-func iterate(c chan<- KeyValue) {
- for k, v := range vars {
- c <- KeyValue{k, v}
- }
- close(c)
-}
-
-func Iter() <-chan KeyValue {
- c := make(chan KeyValue)
- go iterate(c)
- return c
-}
-
-func expvarHandler(w http.ResponseWriter, r *http.Request) {
- w.Header().Set("Content-Type", "application/json; charset=utf-8")
- fmt.Fprintf(w, "{\n")
- first := true
- for name, value := range vars {
- if !first {
- fmt.Fprintf(w, ",\n")
- }
- first = false
- fmt.Fprintf(w, "%q: %s", name, value)
- }
- fmt.Fprintf(w, "\n}\n")
-}
-
-func cmdline() interface{} {
- return os.Args
-}
-
-func memstats() interface{} {
- return runtime.MemStats
-}
-
-func init() {
- http.Handle("/debug/vars", http.HandlerFunc(expvarHandler))
- Publish("cmdline", Func(cmdline))
- Publish("memstats", Func(memstats))
-}
diff --git a/src/pkg/expvar/expvar_test.go b/src/pkg/expvar/expvar_test.go
deleted file mode 100644
index 8f7a48168..000000000
--- a/src/pkg/expvar/expvar_test.go
+++ /dev/null
@@ -1,128 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package expvar
-
-import (
- "json"
- "testing"
-)
-
-func TestInt(t *testing.T) {
- reqs := NewInt("requests")
- if reqs.i != 0 {
- t.Errorf("reqs.i = %v, want 0", reqs.i)
- }
- if reqs != Get("requests").(*Int) {
- t.Errorf("Get() failed.")
- }
-
- reqs.Add(1)
- reqs.Add(3)
- if reqs.i != 4 {
- t.Errorf("reqs.i = %v, want 4", reqs.i)
- }
-
- if s := reqs.String(); s != "4" {
- t.Errorf("reqs.String() = %q, want \"4\"", s)
- }
-
- reqs.Set(-2)
- if reqs.i != -2 {
- t.Errorf("reqs.i = %v, want -2", reqs.i)
- }
-}
-
-func TestFloat(t *testing.T) {
- reqs := NewFloat("requests-float")
- if reqs.f != 0.0 {
- t.Errorf("reqs.f = %v, want 0", reqs.f)
- }
- if reqs != Get("requests-float").(*Float) {
- t.Errorf("Get() failed.")
- }
-
- reqs.Add(1.5)
- reqs.Add(1.25)
- if reqs.f != 2.75 {
- t.Errorf("reqs.f = %v, want 2.75", reqs.f)
- }
-
- if s := reqs.String(); s != "2.75" {
- t.Errorf("reqs.String() = %q, want \"4.64\"", s)
- }
-
- reqs.Add(-2)
- if reqs.f != 0.75 {
- t.Errorf("reqs.f = %v, want 0.75", reqs.f)
- }
-}
-
-func TestString(t *testing.T) {
- name := NewString("my-name")
- if name.s != "" {
- t.Errorf("name.s = %q, want \"\"", name.s)
- }
-
- name.Set("Mike")
- if name.s != "Mike" {
- t.Errorf("name.s = %q, want \"Mike\"", name.s)
- }
-
- if s := name.String(); s != "\"Mike\"" {
- t.Errorf("reqs.String() = %q, want \"\"Mike\"\"", s)
- }
-}
-
-func TestMapCounter(t *testing.T) {
- colors := NewMap("bike-shed-colors")
-
- colors.Add("red", 1)
- colors.Add("red", 2)
- colors.Add("blue", 4)
- colors.AddFloat("green", 4.125)
- if x := colors.m["red"].(*Int).i; x != 3 {
- t.Errorf("colors.m[\"red\"] = %v, want 3", x)
- }
- if x := colors.m["blue"].(*Int).i; x != 4 {
- t.Errorf("colors.m[\"blue\"] = %v, want 4", x)
- }
- if x := colors.m["green"].(*Float).f; x != 4.125 {
- t.Errorf("colors.m[\"green\"] = %v, want 3.14", x)
- }
-
- // colors.String() should be '{"red":3, "blue":4}',
- // though the order of red and blue could vary.
- s := colors.String()
- var j interface{}
- err := json.Unmarshal([]byte(s), &j)
- if err != nil {
- t.Errorf("colors.String() isn't valid JSON: %v", err)
- }
- m, ok := j.(map[string]interface{})
- if !ok {
- t.Error("colors.String() didn't produce a map.")
- }
- red := m["red"]
- x, ok := red.(float64)
- if !ok {
- t.Error("red.Kind() is not a number.")
- }
- if x != 3 {
- t.Errorf("red = %v, want 3", x)
- }
-}
-
-func TestFunc(t *testing.T) {
- var x interface{} = []string{"a", "b"}
- f := Func(func() interface{} { return x })
- if s, exp := f.String(), `["a","b"]`; s != exp {
- t.Errorf(`f.String() = %q, want %q`, s, exp)
- }
-
- x = 17
- if s, exp := f.String(), `17`; s != exp {
- t.Errorf(`f.String() = %q, want %q`, s, exp)
- }
-}