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Merge pull request #1217 from nicolaferraro/save-config
Fix #1181: add --save option to install and run
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,141 @@ | ||
| /* | ||
| Licensed to the Apache Software Foundation (ASF) under one or more | ||
| contributor license agreements. See the NOTICE file distributed with | ||
| this work for additional information regarding copyright ownership. | ||
| The ASF licenses this file to You 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 config | ||
|
|
||
| import ( | ||
| "io/ioutil" | ||
| "os" | ||
| "strings" | ||
|
|
||
| p "github.com/gertd/go-pluralize" | ||
| yaml "gopkg.in/yaml.v2" | ||
| ) | ||
|
|
||
| const ( | ||
| // DefaultConfigLocation is the main place where the kamel config is stored | ||
| DefaultConfigLocation = "./kamel-config.yaml" | ||
| ) | ||
|
|
||
| // KamelConfig is a helper class to manipulate kamel configuration files | ||
| type KamelConfig struct { | ||
| config map[string]interface{} | ||
| } | ||
|
|
||
| // LoadDefault loads the kamel configuration from the default location | ||
| func LoadDefault() (*KamelConfig, error) { | ||
| return LoadConfig(DefaultConfigLocation) | ||
| } | ||
|
|
||
| // LoadConfig loads a kamel configuration file | ||
| func LoadConfig(file string) (*KamelConfig, error) { | ||
| config := make(map[string]interface{}) | ||
| data, err := ioutil.ReadFile(file) | ||
| if err != nil && os.IsNotExist(err) { | ||
| return &KamelConfig{config: config}, nil | ||
| } else if err != nil { | ||
| return nil, err | ||
| } | ||
| if err = yaml.Unmarshal(data, &config); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return &KamelConfig{config: config}, nil | ||
| } | ||
|
|
||
| // Set allows to replace a subtree with a given config | ||
| func (c *KamelConfig) Set(values map[string]interface{}, from, to string, filter func(string) bool) { | ||
| source := navigate(values, from, false) | ||
| destination := navigate(c.config, to, true) | ||
| pl := p.NewClient() | ||
| for k, v := range source { | ||
| if filter(k) { | ||
| plural := pl.Plural(k) | ||
| key := k | ||
| if source[plural] != nil { | ||
| // prefer plural names if available | ||
| key = plural | ||
| } | ||
| destination[key] = v | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // Delete allows to remove a substree from the kamel config | ||
| func (c *KamelConfig) Delete(path string) { | ||
| leaf := navigate(c.config, path, false) | ||
| for k := range leaf { | ||
| delete(leaf, k) | ||
| } | ||
| } | ||
|
|
||
| // WriteDefault writes the configuration in the default location | ||
| func (c *KamelConfig) WriteDefault() error { | ||
| return c.Write(DefaultConfigLocation) | ||
| } | ||
|
|
||
| // Write writes a kamel configuration to a file | ||
| func (c *KamelConfig) Write(file string) error { | ||
| data, err := yaml.Marshal(c.config) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return ioutil.WriteFile(file, data, 0777) | ||
| } | ||
|
|
||
| func navigate(values map[string]interface{}, prefix string, create bool) map[string]interface{} { | ||
| nodes := strings.Split(prefix, ".") | ||
|
|
||
| for _, node := range nodes { | ||
| v := values[node] | ||
|
|
||
| if v == nil { | ||
| if create { | ||
| v = make(map[string]interface{}) | ||
| values[node] = v | ||
| } else { | ||
| return nil | ||
| } | ||
| } | ||
|
|
||
| if m, ok := v.(map[string]interface{}); ok { | ||
| values = m | ||
| } else if mg, ok := v.(map[interface{}]interface{}); ok { | ||
| converted := convert(mg) | ||
| values[node] = converted | ||
| values = converted | ||
| } else { | ||
| if create { | ||
| child := make(map[string]interface{}) | ||
| values[node] = child | ||
| return child | ||
| } | ||
| return nil | ||
| } | ||
| } | ||
| return values | ||
| } | ||
|
|
||
| func convert(m map[interface{}]interface{}) map[string]interface{} { | ||
| res := make(map[string]interface{}) | ||
| for k, v := range m { | ||
| if ks, ok := k.(string); ok { | ||
| res[ks] = v | ||
| } | ||
| } | ||
| return res | ||
| } |