108 lines
2.5 KiB
Go
108 lines
2.5 KiB
Go
package ocpp
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import (
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"errors"
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"fmt"
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"sync"
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"github.com/evcc-io/evcc/util"
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ocpp16 "github.com/lorenzodonini/ocpp-go/ocpp1.6"
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)
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type CS struct {
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mu sync.Mutex
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log *util.Logger
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ocpp16.CentralSystem
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cps map[string]*CP
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}
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// Register registers a charge point with the central system.
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// The charge point identified by id may already be connected in which case initial connection is triggered.
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func (cs *CS) Register(id string, cp *CP) error {
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cs.mu.Lock()
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defer cs.mu.Unlock()
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if _, ok := cs.cps[id]; ok && id == "" {
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return errors.New("cannot have >1 charge point with empty station id")
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}
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// trigger unknown charge point connected
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if unknown, ok := cs.cps[id]; ok && unknown == nil {
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cp.connect(true)
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}
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cs.cps[id] = cp
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return nil
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}
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// errorHandler logs error channel
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func (cs *CS) errorHandler(errC <-chan error) {
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for err := range errC {
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cs.log.ERROR.Println(err)
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}
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}
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func (cs *CS) ChargepointByID(id string) (*CP, error) {
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cs.mu.Lock()
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defer cs.mu.Unlock()
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cp, ok := cs.cps[id]
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if !ok {
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return nil, fmt.Errorf("unknown charge point: %s", id)
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}
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if cp == nil {
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return nil, fmt.Errorf("charge point not configured: %s", id)
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}
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return cp, nil
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}
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// NewChargePoint implements ocpp16.ChargePointConnectionHandler
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func (cs *CS) NewChargePoint(chargePoint ocpp16.ChargePointConnection) {
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cs.mu.Lock()
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defer cs.mu.Unlock()
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// check for configured charge point
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cp, ok := cs.cps[chargePoint.ID()]
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if ok {
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cs.log.DEBUG.Printf("charge point connected: %s", chargePoint.ID())
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// trigger initial connection if charge point is already setup
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if cp != nil {
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cp.connect(true)
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}
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return
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}
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// check for configured anonymous charge point
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cp, ok = cs.cps[""]
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if ok && cp != nil {
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cs.log.INFO.Printf("charge point connected, registering: %s", chargePoint.ID())
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// update id
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cp.RegisterID(chargePoint.ID())
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cs.cps[chargePoint.ID()] = cp
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delete(cs.cps, "")
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cp.connect(true)
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return
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}
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cs.log.WARN.Printf("unknown charge point connected: %s", chargePoint.ID())
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// register unknown charge point
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// when charge point setup is complete, it will eventually be associated with the connected id
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cs.cps[chargePoint.ID()] = nil
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}
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// ChargePointDisconnected implements ocpp16.ChargePointConnectionHandler
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func (cs *CS) ChargePointDisconnected(chargePoint ocpp16.ChargePointConnection) {
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cs.log.DEBUG.Printf("charge point disconnected: %s", chargePoint.ID())
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if cp, err := cs.ChargepointByID(chargePoint.ID()); err == nil {
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cp.connect(false)
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}
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}
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