mirror of
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uing pkg module
This commit is contained in:
Ming Deng
271
pkg/config/json/json.go
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271
pkg/config/json/json.go
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@ -0,0 +1,271 @@
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// Copyright 2014 beego Author. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package json
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import (
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"encoding/json"
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"errors"
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"fmt"
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"io/ioutil"
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"os"
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"strconv"
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"strings"
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"sync"
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"github.com/astaxie/beego/pkg/config"
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)
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// JSONConfig is a json config parser and implements Config interface.
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type JSONConfig struct {
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}
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// Parse returns a ConfigContainer with parsed json config map.
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func (js *JSONConfig) Parse(filename string) (config.Configer, error) {
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file, err := os.Open(filename)
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if err != nil {
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return nil, err
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}
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defer file.Close()
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content, err := ioutil.ReadAll(file)
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if err != nil {
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return nil, err
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}
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return js.ParseData(content)
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}
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// ParseData returns a ConfigContainer with json string
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func (js *JSONConfig) ParseData(data []byte) (config.Configer, error) {
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x := &JSONConfigContainer{
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data: make(map[string]interface{}),
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}
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err := json.Unmarshal(data, &x.data)
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if err != nil {
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var wrappingArray []interface{}
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err2 := json.Unmarshal(data, &wrappingArray)
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if err2 != nil {
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return nil, err
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}
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x.data["rootArray"] = wrappingArray
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}
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x.data = config.ExpandValueEnvForMap(x.data)
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return x, nil
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}
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// JSONConfigContainer A Config represents the json configuration.
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// Only when get value, support key as section:name type.
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type JSONConfigContainer struct {
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data map[string]interface{}
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sync.RWMutex
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}
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// Bool returns the boolean value for a given key.
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func (c *JSONConfigContainer) Bool(key string) (bool, error) {
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val := c.getData(key)
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if val != nil {
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return config.ParseBool(val)
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}
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return false, fmt.Errorf("not exist key: %q", key)
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}
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// DefaultBool return the bool value if has no error
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// otherwise return the defaultval
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func (c *JSONConfigContainer) DefaultBool(key string, defaultval bool) bool {
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if v, err := c.Bool(key); err == nil {
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return v
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}
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return defaultval
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}
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// Int returns the integer value for a given key.
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func (c *JSONConfigContainer) Int(key string) (int, error) {
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val := c.getData(key)
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if val != nil {
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if v, ok := val.(float64); ok {
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return int(v), nil
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} else if v, ok := val.(string); ok {
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return strconv.Atoi(v)
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}
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return 0, errors.New("not valid value")
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}
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return 0, errors.New("not exist key:" + key)
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}
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// DefaultInt returns the integer value for a given key.
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// if err != nil return defaultval
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func (c *JSONConfigContainer) DefaultInt(key string, defaultval int) int {
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if v, err := c.Int(key); err == nil {
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return v
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}
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return defaultval
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}
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// Int64 returns the int64 value for a given key.
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func (c *JSONConfigContainer) Int64(key string) (int64, error) {
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val := c.getData(key)
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if val != nil {
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if v, ok := val.(float64); ok {
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return int64(v), nil
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}
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return 0, errors.New("not int64 value")
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}
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return 0, errors.New("not exist key:" + key)
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}
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// DefaultInt64 returns the int64 value for a given key.
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// if err != nil return defaultval
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func (c *JSONConfigContainer) DefaultInt64(key string, defaultval int64) int64 {
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if v, err := c.Int64(key); err == nil {
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return v
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}
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return defaultval
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}
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// Float returns the float value for a given key.
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func (c *JSONConfigContainer) Float(key string) (float64, error) {
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val := c.getData(key)
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if val != nil {
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if v, ok := val.(float64); ok {
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return v, nil
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}
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return 0.0, errors.New("not float64 value")
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}
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return 0.0, errors.New("not exist key:" + key)
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}
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// DefaultFloat returns the float64 value for a given key.
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// if err != nil return defaultval
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func (c *JSONConfigContainer) DefaultFloat(key string, defaultval float64) float64 {
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if v, err := c.Float(key); err == nil {
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return v
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}
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return defaultval
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}
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// String returns the string value for a given key.
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func (c *JSONConfigContainer) String(key string) string {
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val := c.getData(key)
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if val != nil {
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if v, ok := val.(string); ok {
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return v
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}
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}
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return ""
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}
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// DefaultString returns the string value for a given key.
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// if err != nil return defaultval
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func (c *JSONConfigContainer) DefaultString(key string, defaultval string) string {
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// TODO FIXME should not use "" to replace non existence
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if v := c.String(key); v != "" {
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return v
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}
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return defaultval
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}
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// Strings returns the []string value for a given key.
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func (c *JSONConfigContainer) Strings(key string) []string {
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stringVal := c.String(key)
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if stringVal == "" {
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return nil
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}
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return strings.Split(c.String(key), ";")
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}
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// DefaultStrings returns the []string value for a given key.
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// if err != nil return defaultval
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func (c *JSONConfigContainer) DefaultStrings(key string, defaultval []string) []string {
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if v := c.Strings(key); v != nil {
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return v
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}
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return defaultval
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}
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// GetSection returns map for the given section
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func (c *JSONConfigContainer) GetSection(section string) (map[string]string, error) {
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if v, ok := c.data[section]; ok {
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return v.(map[string]string), nil
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}
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return nil, errors.New("nonexist section " + section)
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}
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// SaveConfigFile save the config into file
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func (c *JSONConfigContainer) SaveConfigFile(filename string) (err error) {
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// Write configuration file by filename.
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f, err := os.Create(filename)
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if err != nil {
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return err
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}
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defer f.Close()
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b, err := json.MarshalIndent(c.data, "", " ")
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if err != nil {
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return err
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}
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_, err = f.Write(b)
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return err
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}
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// Set writes a new value for key.
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func (c *JSONConfigContainer) Set(key, val string) error {
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c.Lock()
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defer c.Unlock()
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c.data[key] = val
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return nil
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}
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// DIY returns the raw value by a given key.
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func (c *JSONConfigContainer) DIY(key string) (v interface{}, err error) {
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val := c.getData(key)
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if val != nil {
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return val, nil
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}
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return nil, errors.New("not exist key")
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}
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// section.key or key
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func (c *JSONConfigContainer) getData(key string) interface{} {
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if len(key) == 0 {
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return nil
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}
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c.RLock()
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defer c.RUnlock()
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sectionKeys := strings.Split(key, "::")
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if len(sectionKeys) >= 2 {
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curValue, ok := c.data[sectionKeys[0]]
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if !ok {
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return nil
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}
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for _, key := range sectionKeys[1:] {
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if v, ok := curValue.(map[string]interface{}); ok {
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if curValue, ok = v[key]; !ok {
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return nil
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}
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}
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}
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return curValue
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}
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if v, ok := c.data[key]; ok {
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return v
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}
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return nil
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}
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func init() {
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config.Register("json", &JSONConfig{})
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}
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224
pkg/config/json/json_test.go
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224
pkg/config/json/json_test.go
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@ -0,0 +1,224 @@
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// Copyright 2014 beego Author. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package json
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import (
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"fmt"
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"os"
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"testing"
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"github.com/astaxie/beego/pkg/config"
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)
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func TestJsonStartsWithArray(t *testing.T) {
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const jsoncontextwitharray = `[
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{
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"url": "user",
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"serviceAPI": "http://www.test.com/user"
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},
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{
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"url": "employee",
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"serviceAPI": "http://www.test.com/employee"
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}
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]`
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f, err := os.Create("testjsonWithArray.conf")
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if err != nil {
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t.Fatal(err)
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}
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_, err = f.WriteString(jsoncontextwitharray)
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if err != nil {
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f.Close()
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t.Fatal(err)
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}
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f.Close()
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defer os.Remove("testjsonWithArray.conf")
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jsonconf, err := config.NewConfig("json", "testjsonWithArray.conf")
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if err != nil {
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t.Fatal(err)
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}
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rootArray, err := jsonconf.DIY("rootArray")
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if err != nil {
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t.Error("array does not exist as element")
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}
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rootArrayCasted := rootArray.([]interface{})
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if rootArrayCasted == nil {
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t.Error("array from root is nil")
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} else {
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elem := rootArrayCasted[0].(map[string]interface{})
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if elem["url"] != "user" || elem["serviceAPI"] != "http://www.test.com/user" {
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t.Error("array[0] values are not valid")
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}
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elem2 := rootArrayCasted[1].(map[string]interface{})
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if elem2["url"] != "employee" || elem2["serviceAPI"] != "http://www.test.com/employee" {
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t.Error("array[1] values are not valid")
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}
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}
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}
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func TestJson(t *testing.T) {
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var (
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jsoncontext = `{
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"appname": "beeapi",
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"testnames": "foo;bar",
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"httpport": 8080,
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"mysqlport": 3600,
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"PI": 3.1415976,
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"runmode": "dev",
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"autorender": false,
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"copyrequestbody": true,
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"session": "on",
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"cookieon": "off",
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"newreg": "OFF",
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"needlogin": "ON",
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"enableSession": "Y",
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"enableCookie": "N",
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"flag": 1,
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"path1": "${GOPATH}",
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"path2": "${GOPATH||/home/go}",
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"database": {
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"host": "host",
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"port": "port",
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"database": "database",
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"username": "username",
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"password": "${GOPATH}",
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"conns":{
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"maxconnection":12,
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"autoconnect":true,
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"connectioninfo":"info",
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"root": "${GOPATH}"
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}
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}
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}`
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keyValue = map[string]interface{}{
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"appname": "beeapi",
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"testnames": []string{"foo", "bar"},
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"httpport": 8080,
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"mysqlport": int64(3600),
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"PI": 3.1415976,
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"runmode": "dev",
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"autorender": false,
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"copyrequestbody": true,
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"session": true,
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"cookieon": false,
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"newreg": false,
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"needlogin": true,
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"enableSession": true,
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"enableCookie": false,
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"flag": true,
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"path1": os.Getenv("GOPATH"),
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"path2": os.Getenv("GOPATH"),
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"database::host": "host",
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"database::port": "port",
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"database::database": "database",
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"database::password": os.Getenv("GOPATH"),
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"database::conns::maxconnection": 12,
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"database::conns::autoconnect": true,
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"database::conns::connectioninfo": "info",
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"database::conns::root": os.Getenv("GOPATH"),
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"unknown": "",
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}
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)
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f, err := os.Create("testjson.conf")
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if err != nil {
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t.Fatal(err)
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}
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_, err = f.WriteString(jsoncontext)
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if err != nil {
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f.Close()
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t.Fatal(err)
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}
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f.Close()
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defer os.Remove("testjson.conf")
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jsonconf, err := config.NewConfig("json", "testjson.conf")
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if err != nil {
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t.Fatal(err)
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}
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for k, v := range keyValue {
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var err error
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var value interface{}
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switch v.(type) {
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case int:
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value, err = jsonconf.Int(k)
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case int64:
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value, err = jsonconf.Int64(k)
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case float64:
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value, err = jsonconf.Float(k)
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case bool:
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value, err = jsonconf.Bool(k)
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case []string:
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value = jsonconf.Strings(k)
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case string:
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value = jsonconf.String(k)
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default:
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value, err = jsonconf.DIY(k)
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}
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if err != nil {
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t.Fatalf("get key %q value fatal,%v err %s", k, v, err)
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} else if fmt.Sprintf("%v", v) != fmt.Sprintf("%v", value) {
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t.Fatalf("get key %q value, want %v got %v .", k, v, value)
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}
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}
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if err = jsonconf.Set("name", "astaxie"); err != nil {
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t.Fatal(err)
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}
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if jsonconf.String("name") != "astaxie" {
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t.Fatal("get name error")
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}
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if db, err := jsonconf.DIY("database"); err != nil {
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t.Fatal(err)
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} else if m, ok := db.(map[string]interface{}); !ok {
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t.Log(db)
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t.Fatal("db not map[string]interface{}")
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} else {
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if m["host"].(string) != "host" {
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t.Fatal("get host err")
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}
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}
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if _, err := jsonconf.Int("unknown"); err == nil {
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t.Error("unknown keys should return an error when expecting an Int")
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}
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if _, err := jsonconf.Int64("unknown"); err == nil {
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t.Error("unknown keys should return an error when expecting an Int64")
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}
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if _, err := jsonconf.Float("unknown"); err == nil {
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t.Error("unknown keys should return an error when expecting a Float")
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}
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if _, err := jsonconf.DIY("unknown"); err == nil {
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t.Error("unknown keys should return an error when expecting an interface{}")
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}
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if val := jsonconf.String("unknown"); val != "" {
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t.Error("unknown keys should return an empty string when expecting a String")
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}
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if _, err := jsonconf.Bool("unknown"); err == nil {
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t.Error("unknown keys should return an error when expecting a Bool")
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}
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if !jsonconf.DefaultBool("unknown", true) {
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t.Error("unknown keys with default value wrong")
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}
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}
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Block a user