/
conn_state.go
79 lines (62 loc) · 1.58 KB
/
conn_state.go
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package main
import (
"sync"
"code.cryptowat.ch/cw-sdk-go/client/websocket"
)
type ConnComponent int
const (
ConnComponentStream ConnComponent = iota
ConnComponentTrading
NumConnComponents
)
type ConnComponentState struct {
State websocket.ConnState
LastErr error
}
type ConnStateTracker struct {
states map[ConnComponent]ConnComponentState
mtx sync.Mutex
}
func NewConnStateTracker() *ConnStateTracker {
return &ConnStateTracker{
states: map[ConnComponent]ConnComponentState{},
}
}
type ConnStateSummary struct {
AllConnected bool
States map[ConnComponent]ConnComponentState
}
// SetComponentState sets component state and returns whether all componets are
// connected.
func (cs *ConnStateTracker) SetComponentState(cc ConnComponent, state websocket.ConnState) *ConnStateSummary {
cs.mtx.Lock()
defer cs.mtx.Unlock()
s := cs.states[cc]
s.State = state
cs.states[cc] = s
summary := cs.getSummaryInternal()
return summary
}
func (cs *ConnStateTracker) SetComponentError(cc ConnComponent, err error) *ConnStateSummary {
cs.mtx.Lock()
defer cs.mtx.Unlock()
s := cs.states[cc]
s.LastErr = err
cs.states[cc] = s
summary := cs.getSummaryInternal()
return summary
}
func (cs *ConnStateTracker) getSummaryInternal() *ConnStateSummary {
summary := &ConnStateSummary{
AllConnected: true,
States: map[ConnComponent]ConnComponentState{},
}
for cc := ConnComponent(0); cc < NumConnComponents; cc++ {
item := cs.states[cc]
if item.State != websocket.ConnStateEstablished {
summary.AllConnected = false
}
summary.States[cc] = item
}
return summary
}