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package mongodb
import (
"time"
"github.com/scaleway/scaleway-sdk-go/errors"
"github.com/scaleway/scaleway-sdk-go/internal/async"
"github.com/scaleway/scaleway-sdk-go/scw"
)
const (
defaultInstanceRetryInterval = 15 * time.Second
defaultInstanceTimeout = 15 * time.Minute
)
// WaitForInstanceRequest is used by WaitForInstance method.
type WaitForInstanceRequest struct {
InstanceID string
Region scw.Region
Timeout *time.Duration
RetryInterval *time.Duration
}
type WaitForSnapshotRequest struct {
InstanceID string
SnapshotID string
Region scw.Region
Timeout *time.Duration
RetryInterval *time.Duration
}
// WaitForInstance waits for the instance to be in a "terminal state" before returning.
// This function can be used to wait for an instance to be ready or in another final state.
func (s *API) WaitForInstance(req *WaitForInstanceRequest, opts ...scw.RequestOption) (*Instance, error) {
timeout := defaultInstanceTimeout
if req.Timeout != nil {
timeout = *req.Timeout
}
retryInterval := defaultInstanceRetryInterval
if req.RetryInterval != nil {
retryInterval = *req.RetryInterval
}
terminalStatus := map[InstanceStatus]struct{}{
InstanceStatusReady: {},
InstanceStatusLocked: {},
InstanceStatusError: {},
}
instance, err := async.WaitSync(&async.WaitSyncConfig{
Get: func() (interface{}, bool, error) {
res, err := s.GetInstance(&GetInstanceRequest{
Region: req.Region,
InstanceID: req.InstanceID,
}, opts...)
if err != nil {
return nil, false, err
}
// Check if the instance has reached a terminal state
_, isTerminal := terminalStatus[res.Status]
return res, isTerminal, nil
},
Timeout: timeout,
IntervalStrategy: async.LinearIntervalStrategy(retryInterval),
})
if err != nil {
return nil, errors.Wrap(err, "waiting for instance failed")
}
return instance.(*Instance), nil
}
// WaitForSnapshot waits for the snapshot to reach a "terminal state" before returning.
func (s *API) WaitForSnapshot(req *WaitForSnapshotRequest, opts ...scw.RequestOption) (*Snapshot, error) {
timeout := defaultInstanceTimeout
if req.Timeout != nil {
timeout = *req.Timeout
}
retryInterval := defaultInstanceRetryInterval
if req.RetryInterval != nil {
retryInterval = *req.RetryInterval
}
terminalStatus := map[SnapshotStatus]struct{}{
SnapshotStatusReady: {},
SnapshotStatusError: {},
SnapshotStatusLocked: {},
}
snapshot, err := async.WaitSync(&async.WaitSyncConfig{
Get: func() (interface{}, bool, error) {
getSnapshotResponse, err := s.GetSnapshot(&GetSnapshotRequest{
Region: req.Region,
SnapshotID: req.SnapshotID,
}, opts...)
if err != nil {
return nil, false, err
}
_, isTerminal := terminalStatus[getSnapshotResponse.Status]
return getSnapshotResponse, isTerminal, nil
},
Timeout: timeout,
IntervalStrategy: async.LinearIntervalStrategy(retryInterval),
})
if err != nil {
return nil, errors.Wrap(err, "waiting for snapshot failed")
}
return snapshot.(*Snapshot), nil
}
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