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app_config.go
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/
app_config.go
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//
// Copyright (c) 2015 The heketi Authors
//
// 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 glusterfs
import (
"encoding/json"
"io"
"os"
"github.com/heketi/heketi/executors/kubeexec"
"github.com/heketi/heketi/executors/sshexec"
)
type GlusterFSConfig struct {
DBfile string `json:"db"`
Executor string `json:"executor"`
Allocator string `json:"allocator"`
SshConfig sshexec.SshConfig `json:"sshexec"`
KubeConfig kubeexec.KubeConfig `json:"kubeexec"`
Loglevel string `json:"loglevel"`
// advanced settings
BrickMaxSize int `json:"brick_max_size_gb"`
BrickMinSize int `json:"brick_min_size_gb"`
BrickMaxNum int `json:"max_bricks_per_volume"`
}
type ConfigFile struct {
GlusterFS GlusterFSConfig `json:"glusterfs"`
}
func loadConfiguration(configIo io.Reader) *GlusterFSConfig {
configParser := json.NewDecoder(configIo)
var config ConfigFile
if err := configParser.Decode(&config); err != nil {
logger.LogError("Unable to parse config file: %v\n",
err.Error())
return nil
}
// Set environment variable to override configuration file
env := os.Getenv("HEKETI_EXECUTOR")
if env != "" {
config.GlusterFS.Executor = env
}
return &config.GlusterFS
}