68 lines
1.5 KiB
Go
68 lines
1.5 KiB
Go
package main
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import (
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"bytes"
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"fmt"
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)
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type GrainHandler struct {
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*GenericListener
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pool *GrainLocalPool
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}
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func (h *GrainHandler) GetState(id CartId, reply *Grain) error {
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grain, err := h.pool.GetGrain(id)
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if err != nil {
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return err
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}
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*reply = grain
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return nil
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}
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func NewGrainHandler(pool *GrainLocalPool, listen string) (*GrainHandler, error) {
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conn := NewConnection(listen)
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server, err := conn.Listen()
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handler := &GrainHandler{
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GenericListener: server,
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pool: pool,
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}
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server.AddHandler(RemoteHandleMutation, handler.RemoteHandleMessageHandler)
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server.AddHandler(RemoteGetState, handler.RemoteGetStateHandler)
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return handler, err
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}
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func (h *GrainHandler) IsHealthy() bool {
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return len(h.pool.grains) < h.pool.PoolSize
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}
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func (h *GrainHandler) RemoteHandleMessageHandler(data *FrameWithPayload, resultChan chan<- FrameWithPayload) error {
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cartData, err := GetCartFrame(data.Payload)
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if err != nil {
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return err
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}
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var msg Message
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err = ReadMessage(bytes.NewReader(cartData.Data), &msg)
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if err != nil {
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fmt.Println("Error reading message:", err)
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return err
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}
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replyData, err := h.pool.Process(cartData.Id, msg)
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resultChan <- *replyData
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return err
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}
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func (h *GrainHandler) RemoteGetStateHandler(data *FrameWithPayload, resultChan chan<- FrameWithPayload) error {
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cartData, err := GetCartFrame(data.Payload)
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if err != nil {
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return err
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}
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reply, err := h.pool.Get(cartData.Id)
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if err != nil {
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return err
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}
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resultChan <- *reply
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return nil
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}
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