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resource_type_scanner.go
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resource_type_scanner.go
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package radar
import (
"time"
"code.cloudfoundry.org/lager"
"github.com/concourse/atc"
"github.com/concourse/atc/dbng"
"github.com/concourse/atc/resource"
"github.com/concourse/atc/worker"
)
type resourceTypeScanner struct {
resourceFactory resource.ResourceFactory
defaultInterval time.Duration
dbPipeline dbng.Pipeline
externalURL string
}
func NewResourceTypeScanner(
resourceFactory resource.ResourceFactory,
defaultInterval time.Duration,
dbPipeline dbng.Pipeline,
externalURL string,
) Scanner {
return &resourceTypeScanner{
resourceFactory: resourceFactory,
defaultInterval: defaultInterval,
dbPipeline: dbPipeline,
externalURL: externalURL,
}
}
func (scanner *resourceTypeScanner) Run(logger lager.Logger, resourceTypeName string) (time.Duration, error) {
pipelinePaused, err := scanner.dbPipeline.CheckPaused()
if err != nil {
logger.Error("failed-to-check-if-pipeline-paused", err)
return 0, err
}
if pipelinePaused {
logger.Debug("pipeline-paused")
return scanner.defaultInterval, nil
}
lockLogger := logger.Session("lock", lager.Data{
"resource-type": resourceTypeName,
})
lock, acquired, err := scanner.dbPipeline.AcquireResourceTypeCheckingLockWithIntervalCheck(logger, resourceTypeName, scanner.defaultInterval, false)
if err != nil {
lockLogger.Error("failed-to-get-lock", err, lager.Data{
"resource-type": resourceTypeName,
})
return scanner.defaultInterval, ErrFailedToAcquireLock
}
if !acquired {
lockLogger.Debug("did-not-get-lock")
return scanner.defaultInterval, ErrFailedToAcquireLock
}
defer lock.Release()
err = scanner.resourceTypeScan(logger.Session("tick"), resourceTypeName)
if err != nil {
return 0, err
}
return scanner.defaultInterval, nil
}
func (scanner *resourceTypeScanner) Scan(logger lager.Logger, resourceTypeName string) error {
return nil
}
func (scanner *resourceTypeScanner) ScanFromVersion(logger lager.Logger, resourceTypeName string, fromVersion atc.Version) error {
return nil
}
func (scanner *resourceTypeScanner) resourceTypeScan(logger lager.Logger, resourceTypeName string) error {
savedResourceType, found, err := scanner.dbPipeline.ResourceType(resourceTypeName)
if err != nil {
logger.Error("failed-to-get-current-version", err)
return err
}
if !found {
return dbng.ResourceTypeNotFoundError{Name: resourceTypeName}
}
resourceTypes, err := scanner.dbPipeline.ResourceTypes()
if err != nil {
logger.Error("failed-to-get-resource-types", err)
return err
}
versionedResourceTypes := resourceTypes.Deserialize()
resourceSpec := worker.ContainerSpec{
ImageSpec: worker.ImageSpec{
ResourceType: savedResourceType.Type(),
},
Tags: []string{},
TeamID: scanner.dbPipeline.TeamID(),
}
res, err := scanner.resourceFactory.NewCheckResource(
logger,
nil,
dbng.ForResourceType(savedResourceType.ID()),
savedResourceType.Type(),
savedResourceType.Source(),
dbng.ContainerMetadata{
Type: dbng.ContainerTypeCheck,
},
resourceSpec,
versionedResourceTypes.Without(resourceTypeName),
worker.NoopImageFetchingDelegate{},
)
if err != nil {
logger.Error("failed-to-initialize-new-container", err)
return err
}
newVersions, err := res.Check(savedResourceType.Source(), atc.Version(savedResourceType.Version()))
if err != nil {
if rErr, ok := err.(resource.ErrResourceScriptFailed); ok {
logger.Info("check-failed", lager.Data{"exit-status": rErr.ExitStatus})
return nil
}
logger.Error("failed-to-check", err)
return err
}
if len(newVersions) == 0 {
logger.Debug("no-new-versions")
return nil
}
logger.Info("versions-found", lager.Data{
"versions": newVersions,
"total": len(newVersions),
})
version := newVersions[len(newVersions)-1]
err = savedResourceType.SaveVersion(version)
if err != nil {
logger.Error("failed-to-save-resource-type-version", err, lager.Data{
"version": version,
})
return err
}
return nil
}