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backend.go
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backend.go
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
package backend
import (
"context"
mqtt "github.com/eclipse/paho.mqtt.golang"
"github.com/etaques/orb/agent/policies"
"go.uber.org/zap"
"time"
)
const (
Unknown RunningStatus = iota
Running
BackendError
AgentError
Offline
)
type RunningStatus int
var runningStatusMap = [...]string{
"unknown",
"running",
"backend_error",
"agent_error",
"offline",
}
var runningStatusRevMap = map[string]RunningStatus{
"unknown": Unknown,
"running": Running,
"backend_error": BackendError,
"agent_error": AgentError,
"offline": Offline,
}
type State struct {
Status RunningStatus
RestartCount int64
LastError string
LastRestartTS time.Time
LastRestartReason string
}
func (s RunningStatus) String() string {
return runningStatusMap[s]
}
type Backend interface {
Configure(*zap.Logger, policies.PolicyRepo, map[string]string, map[string]interface{}) error
SetCommsClient(string, mqtt.Client, string)
Version() (string, error)
Start(ctx context.Context, cancelFunc context.CancelFunc) error
Stop(ctx context.Context) error
FullReset(ctx context.Context) error
GetStartTime() time.Time
GetCapabilities() (map[string]interface{}, error)
GetRunningStatus() (RunningStatus, string, error)
ApplyPolicy(data policies.PolicyData, updatePolicy bool) error
RemovePolicy(data policies.PolicyData) error
}
var registry = make(map[string]Backend)
func Register(name string, b Backend) {
registry[name] = b
}
func GetList() []string {
keys := make([]string, 0, len(registry))
for k := range registry {
keys = append(keys, k)
}
return keys
}
func HaveBackend(name string) bool {
_, prs := registry[name]
return prs
}
func GetBackend(name string) Backend {
return registry[name]
}