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status.go
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status.go
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/*
* Copyright 2014-2015 Jason Woods.
*
* 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 endpoint
// status holds an Endpoint status
type status int
// Endpoint statuses
// Ordering is important due to use of >= etc.
const (
// Awaiting startup and initial connection
endpointStatusIdle status = iota
// Active
endpointStatusActive
// Do not use this endpoint, it has failed
endpointStatusFailed
// The endpoint is about to shutdown once pending payloads are complete
endpointStatusClosing
// Endpoint has completed shutdown and is about to be freed
endpointStatusClosed
)
func (s status) String() string {
switch s {
case endpointStatusIdle:
return "Idle"
case endpointStatusActive:
return "Active"
case endpointStatusFailed:
return "Failed"
case endpointStatusClosing:
return "Shutting down"
}
return "Unknown"
}
// IsIdle returns true if this Endpoint is idle (newly created and unused)
func (e *Endpoint) IsIdle() bool {
return e.status == endpointStatusIdle
}
// IsActive returns true if this Endpoint is active
func (e *Endpoint) IsActive() bool {
return e.status == endpointStatusActive
}
// IsFailed returns true if this endpoint has been marked as failed
func (e *Endpoint) IsFailed() bool {
return e.status == endpointStatusFailed
}
// IsClosing returns true if this Endpoint is closing down or finished closing down
func (e *Endpoint) IsClosing() bool {
return e.status == endpointStatusClosing || e.status == endpointStatusClosed
}
// IsAlive returns true if this endpoint is not failed or closing
func (e *Endpoint) IsAlive() bool {
return !e.IsIdle() && e.status < endpointStatusFailed
}