/
superviser.go
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/
superviser.go
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// Copyright 2019 dfuse Platform Inc.
//
// 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 node_manager
import (
"time"
logplugin "github.com/streamingfast/firehose-core/node-manager/log_plugin"
)
type StartOption string
var EnableDebugDeepmindOption = StartOption("enable-debug-firehose-logs")
var DisableDebugDeepmindOption = StartOption("disable-debug-firehose-logs")
type ShutterInterface interface {
Shutdown(error)
OnTerminating(func(error))
OnTerminated(func(error))
IsTerminated() bool
IsTerminating() bool
Terminated() <-chan struct{}
}
type ChainSuperviser interface {
ShutterInterface
GetCommand() string
GetName() string
ServerID() (string, error)
RegisterLogPlugin(plugin logplugin.LogPlugin)
Start(options ...StartOption) error
Stop() error
IsRunning() bool
Stopped() <-chan struct{}
LastExitCode() int
LastLogLines() []string
LastSeenBlockNum() uint64
}
type MonitorableChainSuperviser interface {
Monitor()
}
type ProducerChainSuperviser interface {
IsProducing() (bool, error)
IsActiveProducer() bool
ResumeProduction() error
PauseProduction() error
WaitUntilEndOfNextProductionRound(timeout time.Duration) error
}
type ProductionState int
const (
StatePre ProductionState = iota // Just before we produce, don't restart
StateProducing // We're producing right now
StatePost // Right after production
StateStale // We haven't produced for 12 minutes
)
func (s ProductionState) String() string {
switch s {
case StatePre:
return "pre"
case StateProducing:
return "producing"
case StatePost:
return "post"
case StateStale:
return "stale"
default:
return "unknown"
}
}
type ProductionEvent int
const (
EventProduced ProductionEvent = iota
EventReceived
)