09a8148e36
This takes some of the machinery from CNI and from the rkt networking code, and turns it into a library that can be linked into go apps. Included is an example command-line application that uses the library, called `cnitool`. Other headline changes: * Plugin exec'ing is factored out The motivation here is to factor out the protocol for invoking plugins. To that end, a generalisation of the code from api.go and pkg/plugin/ipam.go goes into pkg/invoke/exec.go. * Move argument-handling and conf-loading into public API The fact that the arguments get turned into an environment for the plugin is incidental to the API; so, provide a way of supplying them as a struct or saying "just use the same arguments as I got" (the latter is for IPAM plugins).
51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
// Copyright 2015 CoreOS, Inc.
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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 types
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import (
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"encoding"
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"fmt"
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"reflect"
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"strings"
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)
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func LoadArgs(args string, container interface{}) error {
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if args == "" {
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return nil
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}
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containerValue := reflect.ValueOf(container)
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pairs := strings.Split(args, ";")
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for _, pair := range pairs {
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kv := strings.Split(pair, "=")
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if len(kv) != 2 {
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return fmt.Errorf("ARGS: invalid pair %q", pair)
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}
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keyString := kv[0]
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valueString := kv[1]
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keyField := containerValue.Elem().FieldByName(keyString)
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if !keyField.IsValid() {
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return fmt.Errorf("ARGS: invalid key %q", keyString)
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}
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u := keyField.Addr().Interface().(encoding.TextUnmarshaler)
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err := u.UnmarshalText([]byte(valueString))
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if err != nil {
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return fmt.Errorf("ARGS: error parsing value of pair %q: %v)", pair, err)
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}
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}
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return nil
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}
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