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source-controller/controllers/helmchart_controller.go at main · aryan9600/source-controller · GitHub
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/*
Copyright 2020 The Flux authors
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
controllers
import
(
"context"
"errors"
"fmt"
"net/url"
"os"
"path/filepath"
"strconv"
"strings"
"time"
securejoin
"github.com/cyphar/filepath-securejoin"
"github.com/go-logr/logr"
helmgetter
"helm.sh/helm/v3/pkg/getter"
corev1
"k8s.io/api/core/v1"
apierrs
"k8s.io/apimachinery/pkg/api/errors"
apimeta
"k8s.io/apimachinery/pkg/api/meta"
metav1
"k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
kuberecorder
"k8s.io/client-go/tools/record"
"k8s.io/client-go/tools/reference"
ctrl
"sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/builder"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
"github.com/fluxcd/pkg/apis/meta"
"github.com/fluxcd/pkg/runtime/events"
"github.com/fluxcd/pkg/runtime/metrics"
"github.com/fluxcd/pkg/runtime/predicates"
"github.com/fluxcd/pkg/untar"
sourcev1
"github.com/fluxcd/source-controller/api/v1beta1"
"github.com/fluxcd/source-controller/internal/helm/chart"
"github.com/fluxcd/source-controller/internal/helm/getter"
"github.com/fluxcd/source-controller/internal/helm/repository"
)
// +kubebuilder:rbac:groups=source.toolkit.fluxcd.io,resources=helmcharts,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=source.toolkit.fluxcd.io,resources=helmcharts/status,verbs=get;update;patch
// +kubebuilder:rbac:groups=source.toolkit.fluxcd.io,resources=helmcharts/finalizers,verbs=get;create;update;patch;delete
// +kubebuilder:rbac:groups="",resources=events,verbs=create;patch
// HelmChartReconciler reconciles a HelmChart object
type
HelmChartReconciler
struct
{
client.
Client
Scheme
*
runtime.
Scheme
Storage
*
Storage
Getters
helmgetter.
Providers
EventRecorder
kuberecorder.
EventRecorder
ExternalEventRecorder
*
events.
Recorder
MetricsRecorder
*
metrics.
Recorder
}
func
(
r
*
HelmChartReconciler
)
SetupWithManager
(
mgr
ctrl.
Manager
)
error
{
return
r
.
SetupWithManagerAndOptions
(
mgr
,
HelmChartReconcilerOptions
{})
}
func
(
r
*
HelmChartReconciler
)
SetupWithManagerAndOptions
(
mgr
ctrl.
Manager
,
opts
HelmChartReconcilerOptions
)
error
{
if
err
:=
mgr
.
GetCache
().
IndexField
(
context
.
TODO
(),
&
sourcev1.
HelmRepository
{},
sourcev1
.
HelmRepositoryURLIndexKey
,
r
.
indexHelmRepositoryByURL
);
err
!=
nil
{
return
fmt
.
Errorf
(
"failed setting index fields: %w"
,
err
)
}
if
err
:=
mgr
.
GetCache
().
IndexField
(
context
.
TODO
(),
&
sourcev1.
HelmChart
{},
sourcev1
.
SourceIndexKey
,
r
.
indexHelmChartBySource
);
err
!=
nil
{
return
fmt
.
Errorf
(
"failed setting index fields: %w"
,
err
)
}
return
ctrl
.
NewControllerManagedBy
(
mgr
).
For
(
&
sourcev1.
HelmChart
{},
builder
.
WithPredicates
(
predicate
.
Or
(predicate.
GenerationChangedPredicate
{}, predicates.
ReconcileRequestedPredicate
{}),
)).
Watches
(
&
source.
Kind
{
Type
:
&
sourcev1.
HelmRepository
{}},
handler
.
EnqueueRequestsFromMapFunc
(
r
.
requestsForHelmRepositoryChange
),
builder
.
WithPredicates
(
SourceRevisionChangePredicate
{}),
).
Watches
(
&
source.
Kind
{
Type
:
&
sourcev1.
GitRepository
{}},
handler
.
EnqueueRequestsFromMapFunc
(
r
.
requestsForGitRepositoryChange
),
builder
.
WithPredicates
(
SourceRevisionChangePredicate
{}),
).
Watches
(
&
source.
Kind
{
Type
:
&
sourcev1.
Bucket
{}},
handler
.
EnqueueRequestsFromMapFunc
(
r
.
requestsForBucketChange
),
builder
.
WithPredicates
(
SourceRevisionChangePredicate
{}),
).
WithOptions
(controller.
Options
{
MaxConcurrentReconciles
:
opts
.
MaxConcurrentReconciles
}).
Complete
(
r
)
}
func
(
r
*
HelmChartReconciler
)
Reconcile
(
ctx
context.
Context
,
req
ctrl.
Request
) (ctrl.
Result
,
error
) {
start
:=
time
.
Now
()
log
:=
logr
.
FromContext
(
ctx
)
var
chart
sourcev1.
HelmChart
if
err
:=
r
.
Get
(
ctx
,
req
.
NamespacedName
,
&
chart
);
err
!=
nil
{
return
ctrl.
Result
{
Requeue
:
true
},
client
.
IgnoreNotFound
(
err
)
}
// Record suspended status metric
defer
r
.
recordSuspension
(
ctx
,
chart
)
// Add our finalizer if it does not exist
if
!
controllerutil
.
ContainsFinalizer
(
&
chart
,
sourcev1
.
SourceFinalizer
) {
controllerutil
.
AddFinalizer
(
&
chart
,
sourcev1
.
SourceFinalizer
)
if
err
:=
r
.
Update
(
ctx
,
&
chart
);
err
!=
nil
{
log
.
Error
(
err
,
"unable to register finalizer"
)
return
ctrl.
Result
{},
err
}
}
// Examine if the object is under deletion
if
!
chart
.
ObjectMeta
.
DeletionTimestamp
.
IsZero
() {
return
r
.
reconcileDelete
(
ctx
,
chart
)
}
// Return early if the object is suspended.
if
chart
.
Spec
.
Suspend
{
log
.
Info
(
"Reconciliation is suspended for this object"
)
return
ctrl.
Result
{},
nil
}
// Record reconciliation duration
if
r
.
MetricsRecorder
!=
nil
{
objRef
,
err
:=
reference
.
GetReference
(
r
.
Scheme
,
&
chart
)
if
err
!=
nil
{
return
ctrl.
Result
{},
err
}
defer
r
.
MetricsRecorder
.
RecordDuration
(
*
objRef
,
start
)
}
// Conditionally set progressing condition in status
resetChart
,
changed
:=
r
.
resetStatus
(
chart
)
if
changed
{
chart
=
resetChart
if
err
:=
r
.
updateStatus
(
ctx
,
req
,
chart
.
Status
);
err
!=
nil
{
log
.
Error
(
err
,
"unable to update status"
)
return
ctrl.
Result
{
Requeue
:
true
},
err
}
r
.
recordReadiness
(
ctx
,
chart
)
}
// Record the value of the reconciliation request, if any
// TODO(hidde): would be better to defer this in combination with
// always patching the status sub-resource after a reconciliation.
if
v
,
ok
:=
meta
.
ReconcileAnnotationValue
(
chart
.
GetAnnotations
());
ok
{
chart
.
Status
.
SetLastHandledReconcileRequest
(
v
)
}
// Purge all but current artifact from storage
if
err
:=
r
.
gc
(
chart
);
err
!=
nil
{
log
.
Error
(
err
,
"unable to purge old artifacts"
)
}
// Retrieve the source
source
,
err
:=
r
.
getSource
(
ctx
,
chart
)
if
err
!=
nil
{
chart
=
sourcev1
.
HelmChartNotReady
(
*
chart
.
DeepCopy
(),
sourcev1
.
ChartPullFailedReason
,
err
.
Error
())
if
err
:=
r
.
updateStatus
(
ctx
,
req
,
chart
.
Status
);
err
!=
nil
{
log
.
Error
(
err
,
"unable to update status"
)
}
return
ctrl.
Result
{
Requeue
:
true
},
err
}
// Assert source is ready
if
source
.
GetArtifact
()
==
nil
{
err
=
fmt
.
Errorf
(
"no artifact found for source `%s` kind '%s'"
,
chart
.
Spec
.
SourceRef
.
Name
,
chart
.
Spec
.
SourceRef
.
Kind
)
chart
=
sourcev1
.
HelmChartNotReady
(
*
chart
.
DeepCopy
(),
sourcev1
.
ChartPullFailedReason
,
err
.
Error
())
if
err
:=
r
.
updateStatus
(
ctx
,
req
,
chart
.
Status
);
err
!=
nil
{
log
.
Error
(
err
,
"unable to update status"
)
}
r
.
recordReadiness
(
ctx
,
chart
)
return
ctrl.
Result
{
Requeue
:
true
},
err
}
// Create working directory
workDir
,
err
:=
os
.
MkdirTemp
(
""
,
chart
.
Kind
+
"-"
+
chart
.
Namespace
+
"-"
+
chart
.
Name
+
"-"
)
if
err
!=
nil
{
err
=
fmt
.
Errorf
(
"failed to create temporary working directory: %w"
,
err
)
chart
=
sourcev1
.
HelmChartNotReady
(
*
chart
.
DeepCopy
(),
sourcev1
.
ChartPullFailedReason
,
err
.
Error
())
if
err
:=
r
.
updateStatus
(
ctx
,
req
,
chart
.
Status
);
err
!=
nil
{
log
.
Error
(
err
,
"unable to update status"
)
}
r
.
recordReadiness
(
ctx
,
chart
)
return
ctrl.
Result
{
Requeue
:
true
},
err
}
defer
os
.
RemoveAll
(
workDir
)
// Perform the reconciliation for the chart source type
var
reconciledChart
sourcev1.
HelmChart
var
reconcileErr
error
switch
typedSource
:=
source
.(
type
) {
case
*
sourcev1.
HelmRepository
:
reconciledChart
,
reconcileErr
=
r
.
fromHelmRepository
(
ctx
,
*
typedSource
,
*
chart
.
DeepCopy
(),
workDir
,
changed
)
case
*
sourcev1.
GitRepository
,
*
sourcev1.
Bucket
:
reconciledChart
,
reconcileErr
=
r
.
fromTarballArtifact
(
ctx
,
*
typedSource
.
GetArtifact
(),
*
chart
.
DeepCopy
(),
workDir
,
changed
)
default
:
err
:=
fmt
.
Errorf
(
"unable to reconcile unsupported source reference kind '%s'"
,
chart
.
Spec
.
SourceRef
.
Kind
)
return
ctrl.
Result
{
Requeue
:
false
},
err
}
// Update status with the reconciliation result
if
err
:=
r
.
updateStatus
(
ctx
,
req
,
reconciledChart
.
Status
);
err
!=
nil
{
log
.
Error
(
err
,
"unable to update status"
)
return
ctrl.
Result
{
Requeue
:
true
},
err
}
// If reconciliation failed, record the failure and requeue immediately
if
reconcileErr
!=
nil
{
r
.
event
(
ctx
,
reconciledChart
,
events
.
EventSeverityError
,
reconcileErr
.
Error
())
r
.
recordReadiness
(
ctx
,
reconciledChart
)
return
ctrl.
Result
{
Requeue
:
true
},
reconcileErr
}
// Emit an event if we did not have an artifact before, or the revision has changed
if
(
chart
.
GetArtifact
()
==
nil
&&
reconciledChart
.
GetArtifact
()
!=
nil
)
||
(
chart
.
GetArtifact
()
!=
nil
&&
reconciledChart
.
GetArtifact
()
!=
nil
&&
reconciledChart
.
GetArtifact
().
Revision
!=
chart
.
GetArtifact
().
Revision
) {
r
.
event
(
ctx
,
reconciledChart
,
events
.
EventSeverityInfo
,
sourcev1
.
HelmChartReadyMessage
(
reconciledChart
))
}
r
.
recordReadiness
(
ctx
,
reconciledChart
)
log
.
Info
(
fmt
.
Sprintf
(
"Reconciliation finished in %s, next run in %s"
,
time
.
Since
(
start
).
String
(),
chart
.
GetInterval
().
Duration
.
String
(),
))
return
ctrl.
Result
{
RequeueAfter
:
chart
.
GetInterval
().
Duration
},
nil
}
type
HelmChartReconcilerOptions
struct
{
MaxConcurrentReconciles
int
}
func
(
r
*
HelmChartReconciler
)
getSource
(
ctx
context.
Context
,
chart
sourcev1.
HelmChart
) (sourcev1.
Source
,
error
) {
var
source
sourcev1.
Source
namespacedName
:=
types.
NamespacedName
{
Namespace
:
chart
.
GetNamespace
(),
Name
:
chart
.
Spec
.
SourceRef
.
Name
,
}
switch
chart
.
Spec
.
SourceRef
.
Kind
{
case
sourcev1
.
HelmRepositoryKind
:
var
repository
sourcev1.
HelmRepository
err
:=
r
.
Client
.
Get
(
ctx
,
namespacedName
,
&
repository
)
if
err
!=
nil
{
return
source
,
fmt
.
Errorf
(
"failed to retrieve source: %w"
,
err
)
}
source
=
&
repository
case
sourcev1
.
GitRepositoryKind
:
var
repository
sourcev1.
GitRepository
err
:=
r
.
Client
.
Get
(
ctx
,
namespacedName
,
&
repository
)
if
err
!=
nil
{
return
source
,
fmt
.
Errorf
(
"failed to retrieve source: %w"
,
err
)
}
source
=
&
repository
case
sourcev1
.
BucketKind
:
var
bucket
sourcev1.
Bucket
err
:=
r
.
Client
.
Get
(
ctx
,
namespacedName
,
&
bucket
)
if
err
!=
nil
{
return
source
,
fmt
.
Errorf
(
"failed to retrieve source: %w"
,
err
)
}
source
=
&
bucket
default
:
return
source
,
fmt
.
Errorf
(
"source `%s` kind '%s' not supported"
,
chart
.
Spec
.
SourceRef
.
Name
,
chart
.
Spec
.
SourceRef
.
Kind
)
}
return
source
,
nil
}
func
(
r
*
HelmChartReconciler
)
fromHelmRepository
(
ctx
context.
Context
,
repo
sourcev1.
HelmRepository
,
c
sourcev1.
HelmChart
,
workDir
string
,
force
bool
) (sourcev1.
HelmChart
,
error
) {
// Configure Index getter options
clientOpts
:=
[]helmgetter.
Option
{
helmgetter
.
WithURL
(
repo
.
Spec
.
URL
),
helmgetter
.
WithTimeout
(
repo
.
Spec
.
Timeout
.
Duration
),
helmgetter
.
WithPassCredentialsAll
(
repo
.
Spec
.
PassCredentials
),
}
if
secret
,
err
:=
r
.
getHelmRepositorySecret
(
ctx
,
&
repo
);
err
!=
nil
{
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
AuthenticationFailedReason
,
err
.
Error
()),
err
}
else
if
secret
!=
nil
{
// Create temporary working directory for credentials
authDir
:=
filepath
.
Join
(
workDir
,
"creds"
)
if
err
:=
os
.
Mkdir
(
authDir
,
0700
);
err
!=
nil
{
err
=
fmt
.
Errorf
(
"failed to create temporary directory for repository credentials: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
opts
,
err
:=
getter
.
ClientOptionsFromSecret
(
authDir
,
*
secret
)
if
err
!=
nil
{
err
=
fmt
.
Errorf
(
"failed to create client options for HelmRepository '%s': %w"
,
repo
.
Name
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
AuthenticationFailedReason
,
err
.
Error
()),
err
}
clientOpts
=
append
(
clientOpts
,
opts
...
)
}
// Initialize the chart repository
chartRepo
,
err
:=
repository
.
NewChartRepository
(
repo
.
Spec
.
URL
,
r
.
Storage
.
LocalPath
(
*
repo
.
GetArtifact
()),
r
.
Getters
,
clientOpts
)
if
err
!=
nil
{
switch
err
.(
type
) {
case
*
url.
Error
:
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
URLInvalidReason
,
err
.
Error
()),
err
default
:
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
ChartPullFailedReason
,
err
.
Error
()),
err
}
}
// Build the chart
cb
:=
chart
.
NewRemoteBuilder
(
chartRepo
)
ref
:=
chart.
RemoteReference
{
Name
:
c
.
Spec
.
Chart
,
Version
:
c
.
Spec
.
Version
}
opts
:=
chart.
BuildOptions
{
ValuesFiles
:
c
.
GetValuesFiles
(),
Force
:
force
,
}
if
artifact
:=
c
.
GetArtifact
();
artifact
!=
nil
{
opts
.
CachedChart
=
r
.
Storage
.
LocalPath
(
*
artifact
)
}
// Set the VersionMetadata to the object's Generation if ValuesFiles is defined
// This ensures changes can be noticed by the Artifact consumer
if
len
(
opts
.
GetValuesFiles
())
>
0
{
opts
.
VersionMetadata
=
strconv
.
FormatInt
(
c
.
Generation
,
10
)
}
b
,
err
:=
cb
.
Build
(
ctx
,
ref
,
filepath
.
Join
(
workDir
,
"chart.tgz"
),
opts
)
if
err
!=
nil
{
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
ChartPullFailedReason
,
err
.
Error
()),
err
}
newArtifact
:=
r
.
Storage
.
NewArtifactFor
(
c
.
Kind
,
c
.
GetObjectMeta
(),
b
.
Version
,
fmt
.
Sprintf
(
"%s-%s.tgz"
,
b
.
Name
,
b
.
Version
))
// If the path of the returned build equals the cache path,
// there are no changes to the chart
if
b
.
Path
==
opts
.
CachedChart
{
// Ensure hostname is updated
if
c
.
GetArtifact
().
URL
!=
newArtifact
.
URL
{
r
.
Storage
.
SetArtifactURL
(
c
.
GetArtifact
())
c
.
Status
.
URL
=
r
.
Storage
.
SetHostname
(
c
.
Status
.
URL
)
}
return
c
,
nil
}
// Ensure artifact directory exists
err
=
r
.
Storage
.
MkdirAll
(
newArtifact
)
if
err
!=
nil
{
err
=
fmt
.
Errorf
(
"unable to create chart directory: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
// Acquire a lock for the artifact
unlock
,
err
:=
r
.
Storage
.
Lock
(
newArtifact
)
if
err
!=
nil
{
err
=
fmt
.
Errorf
(
"unable to acquire lock: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
defer
unlock
()
// Copy the packaged chart to the artifact path
if
err
=
r
.
Storage
.
CopyFromPath
(
&
newArtifact
,
b
.
Path
);
err
!=
nil
{
err
=
fmt
.
Errorf
(
"failed to write chart package to storage: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
// Update symlink
cUrl
,
err
:=
r
.
Storage
.
Symlink
(
newArtifact
,
fmt
.
Sprintf
(
"%s-latest.tgz"
,
b
.
Name
))
if
err
!=
nil
{
err
=
fmt
.
Errorf
(
"storage error: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
return
sourcev1
.
HelmChartReady
(
c
,
newArtifact
,
cUrl
,
sourcev1
.
ChartPullSucceededReason
,
b
.
Summary
()),
nil
}
func
(
r
*
HelmChartReconciler
)
fromTarballArtifact
(
ctx
context.
Context
,
source
sourcev1.
Artifact
,
c
sourcev1.
HelmChart
,
workDir
string
,
force
bool
) (sourcev1.
HelmChart
,
error
) {
// Create temporary working directory to untar into
sourceDir
:=
filepath
.
Join
(
workDir
,
"source"
)
if
err
:=
os
.
Mkdir
(
sourceDir
,
0700
);
err
!=
nil
{
err
=
fmt
.
Errorf
(
"failed to create temporary directory to untar source into: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
// Open the tarball artifact file and untar files into working directory
f
,
err
:=
os
.
Open
(
r
.
Storage
.
LocalPath
(
source
))
if
err
!=
nil
{
err
=
fmt
.
Errorf
(
"artifact open error: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
if
_
,
err
=
untar
.
Untar
(
f
,
sourceDir
);
err
!=
nil
{
_
=
f
.
Close
()
err
=
fmt
.
Errorf
(
"artifact untar error: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
if
err
=
f
.
Close
();
err
!=
nil
{
err
=
fmt
.
Errorf
(
"artifact close error: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
chartPath
,
err
:=
securejoin
.
SecureJoin
(
sourceDir
,
c
.
Spec
.
Chart
)
if
err
!=
nil
{
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
// Setup dependency manager
authDir
:=
filepath
.
Join
(
workDir
,
"creds"
)
if
err
=
os
.
Mkdir
(
authDir
,
0700
);
err
!=
nil
{
err
=
fmt
.
Errorf
(
"failed to create temporaRy directory for dependency credentials: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
dm
:=
chart
.
NewDependencyManager
(
chart
.
WithRepositoryCallback
(
r
.
namespacedChartRepositoryCallback
(
ctx
,
authDir
,
c
.
GetNamespace
())),
)
defer
dm
.
Clear
()
// Configure builder options, including any previously cached chart
opts
:=
chart.
BuildOptions
{
ValuesFiles
:
c
.
GetValuesFiles
(),
Force
:
force
,
}
if
artifact
:=
c
.
Status
.
Artifact
;
artifact
!=
nil
{
opts
.
CachedChart
=
artifact
.
Path
}
// Configure revision metadata for chart build if we should react to revision changes
if
c
.
Spec
.
ReconcileStrategy
==
sourcev1
.
ReconcileStrategyRevision
{
rev
:=
source
.
Revision
if
c
.
Spec
.
SourceRef
.
Kind
==
sourcev1
.
GitRepositoryKind
{
// Split the reference by the `/` delimiter which may be present,
// and take the last entry which contains the SHA.
split
:=
strings
.
Split
(
source
.
Revision
,
"/"
)
rev
=
split
[
len
(
split
)
-
1
]
}
if
kind
:=
c
.
Spec
.
SourceRef
.
Kind
;
kind
==
sourcev1
.
GitRepositoryKind
||
kind
==
sourcev1
.
BucketKind
{
// The SemVer from the metadata is at times used in e.g. the label metadata for a resource
// in a chart, which has a limited length of 63 characters.
// To not fill most of this space with a full length SHA hex (40 characters for SHA-1, and
// even more for SHA-2 for a chart from a Bucket), we shorten this to the first 12
// characters taken from the hex.
// For SHA-1, this has proven to be unique in the Linux kernel with over 875.000 commits
// (http://git-scm.com/book/en/v2/Git-Tools-Revision-Selection#Short-SHA-1).
// Note that for a collision to be problematic, it would need to happen right after the
// previous SHA for the artifact, which is highly unlikely, if not virtually impossible.
// Ref: https://en.wikipedia.org/wiki/Birthday_attack
rev
=
rev
[
0
:
12
]
}
opts
.
VersionMetadata
=
rev
}
// Set the VersionMetadata to the object's Generation if ValuesFiles is defined,
// this ensures changes can be noticed by the Artifact consumer
if
len
(
opts
.
GetValuesFiles
())
>
0
{
if
opts
.
VersionMetadata
!=
""
{
opts
.
VersionMetadata
+=
"."
}
opts
.
VersionMetadata
+=
strconv
.
FormatInt
(
c
.
Generation
,
10
)
}
// Build chart
cb
:=
chart
.
NewLocalBuilder
(
dm
)
b
,
err
:=
cb
.
Build
(
ctx
, chart.
LocalReference
{
WorkDir
:
sourceDir
,
Path
:
chartPath
},
filepath
.
Join
(
workDir
,
"chart.tgz"
),
opts
)
if
err
!=
nil
{
return
sourcev1
.
HelmChartNotReady
(
c
,
reasonForBuildError
(
err
),
err
.
Error
()),
err
}
newArtifact
:=
r
.
Storage
.
NewArtifactFor
(
c
.
Kind
,
c
.
GetObjectMeta
(),
b
.
Version
,
fmt
.
Sprintf
(
"%s-%s.tgz"
,
b
.
Name
,
b
.
Version
))
// If the path of the returned build equals the cache path,
// there are no changes to the chart
if
apimeta
.
IsStatusConditionTrue
(
c
.
Status
.
Conditions
,
meta
.
ReadyCondition
)
&&
b
.
Path
==
opts
.
CachedChart
{
// Ensure hostname is updated
if
c
.
GetArtifact
().
URL
!=
newArtifact
.
URL
{
r
.
Storage
.
SetArtifactURL
(
c
.
GetArtifact
())
c
.
Status
.
URL
=
r
.
Storage
.
SetHostname
(
c
.
Status
.
URL
)
}
return
c
,
nil
}
// Ensure artifact directory exists
err
=
r
.
Storage
.
MkdirAll
(
newArtifact
)
if
err
!=
nil
{
err
=
fmt
.
Errorf
(
"unable to create chart directory: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
// Acquire a lock for the artifact
unlock
,
err
:=
r
.
Storage
.
Lock
(
newArtifact
)
if
err
!=
nil
{
err
=
fmt
.
Errorf
(
"unable to acquire lock: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
defer
unlock
()
// Copy the packaged chart to the artifact path
if
err
=
r
.
Storage
.
CopyFromPath
(
&
newArtifact
,
b
.
Path
);
err
!=
nil
{
err
=
fmt
.
Errorf
(
"failed to write chart package to storage: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
// Update symlink
cUrl
,
err
:=
r
.
Storage
.
Symlink
(
newArtifact
,
fmt
.
Sprintf
(
"%s-latest.tgz"
,
b
.
Name
))
if
err
!=
nil
{
err
=
fmt
.
Errorf
(
"storage error: %w"
,
err
)
return
sourcev1
.
HelmChartNotReady
(
c
,
sourcev1
.
StorageOperationFailedReason
,
err
.
Error
()),
err
}
return
sourcev1
.
HelmChartReady
(
c
,
newArtifact
,
cUrl
,
reasonForBuildSuccess
(
b
),
b
.
Summary
()),
nil
}
// namespacedChartRepositoryCallback returns a chart.GetChartRepositoryCallback
// scoped to the given namespace. Credentials for retrieved v1beta1.HelmRepository
// objects are stored in the given directory.
// The returned callback returns a repository.ChartRepository configured with the
// retrieved v1beta1.HelmRepository, or a shim with defaults if no object could
// be found.
func
(
r
*
HelmChartReconciler
)
namespacedChartRepositoryCallback
(
ctx
context.
Context
,
dir
,
namespace
string
) chart.
GetChartRepositoryCallback
{
return
func
(
url
string
) (
*
repository.
ChartRepository
,
error
) {
repo
,
err
:=
r
.
resolveDependencyRepository
(
ctx
,
url
,
namespace
)
if
err
!=
nil
{
// Return Kubernetes client errors, but ignore others
if
apierrs
.
ReasonForError
(
err
)
!=
metav1
.
StatusReasonUnknown
{
return
nil
,
err
}
repo
=
&
sourcev1.
HelmRepository
{
Spec
: sourcev1.
HelmRepositorySpec
{
URL
:
url
,
Timeout
:
&
metav1.
Duration
{
Duration
:
60
*
time
.
Second
},
},
}
}
clientOpts
:=
[]helmgetter.
Option
{
helmgetter
.
WithURL
(
repo
.
Spec
.
URL
),
helmgetter
.
WithTimeout
(
repo
.
Spec
.
Timeout
.
Duration
),
helmgetter
.
WithPassCredentialsAll
(
repo
.
Spec
.
PassCredentials
),
}
if
secret
,
err
:=
r
.
getHelmRepositorySecret
(
ctx
,
repo
);
err
!=
nil
{
return
nil
,
err
}
else
if
secret
!=
nil
{
opts
,
err
:=
getter
.
ClientOptionsFromSecret
(
dir
,
*
secret
)
if
err
!=
nil
{
return
nil
,
err
}
clientOpts
=
append
(
clientOpts
,
opts
...
)
}
chartRepo
,
err
:=
repository
.
NewChartRepository
(
repo
.
Spec
.
URL
,
""
,
r
.
Getters
,
clientOpts
)
if
err
!=
nil
{
return
nil
,
err
}
if
repo
.
Status
.
Artifact
!=
nil
{
chartRepo
.
CachePath
=
r
.
Storage
.
LocalPath
(
*
repo
.
GetArtifact
())
}
return
chartRepo
,
nil
}
}
func
(
r
*
HelmChartReconciler
)
reconcileDelete
(
ctx
context.
Context
,
chart
sourcev1.
HelmChart
) (ctrl.
Result
,
error
) {
// Our finalizer is still present, so lets handle garbage collection
if
err
:=
r
.
gc
(
chart
);
err
!=
nil
{
r
.
event
(
ctx
,
chart
,
events
.
EventSeverityError
,
fmt
.
Sprintf
(
"garbage collection for deleted resource failed: %s"
,
err
.
Error
()))
// Return the error so we retry the failed garbage collection
return
ctrl.
Result
{},
err
}
// Record deleted status
r
.
recordReadiness
(
ctx
,
chart
)
// Remove our finalizer from the list and update it
controllerutil
.
RemoveFinalizer
(
&
chart
,
sourcev1
.
SourceFinalizer
)
if
err
:=
r
.
Update
(
ctx
,
&
chart
);
err
!=
nil
{
return
ctrl.
Result
{},
err
}
// Stop reconciliation as the object is being deleted
return
ctrl.
Result
{},
nil
}
// resetStatus returns a modified v1beta1.HelmChart and a boolean indicating
// if the status field has been reset.
func
(
r
*
HelmChartReconciler
)
resetStatus
(
chart
sourcev1.
HelmChart
) (sourcev1.
HelmChart
,
bool
) {
// We do not have an artifact, or it does no longer exist
if
chart
.
GetArtifact
()
==
nil
||
!
r
.
Storage
.
ArtifactExist
(
*
chart
.
GetArtifact
()) {
chart
=
sourcev1
.
HelmChartProgressing
(
chart
)
chart
.
Status
.
Artifact
=
nil
return
chart
,
true
}
// The chart specification has changed
if
chart
.
Generation
!=
chart
.
Status
.
ObservedGeneration
{
return
sourcev1
.
HelmChartProgressing
(
chart
),
true
}
return
chart
,
false
}
// gc performs a garbage collection for the given v1beta1.HelmChart.
// It removes all but the current artifact except for when the
// deletion timestamp is set, which will result in the removal of
// all artifacts for the resource.
func
(
r
*
HelmChartReconciler
)
gc
(
chart
sourcev1.
HelmChart
)
error
{
if
!
chart
.
DeletionTimestamp
.
IsZero
() {
return
r
.
Storage
.
RemoveAll
(
r
.
Storage
.
NewArtifactFor
(
chart
.
Kind
,
chart
.
GetObjectMeta
(),
""
,
"*"
))
}
if
chart
.
GetArtifact
()
!=
nil
{
return
r
.
Storage
.
RemoveAllButCurrent
(
*
chart
.
GetArtifact
())
}
return
nil
}
// event emits a Kubernetes event and forwards the event to notification
// controller if configured.
func
(
r
*
HelmChartReconciler
)
event
(
ctx
context.
Context
,
chart
sourcev1.
HelmChart
,
severity
,
msg
string
) {
log
:=
logr
.
FromContext
(
ctx
)
if
r
.
EventRecorder
!=
nil
{
r
.
EventRecorder
.
Eventf
(
&
chart
,
"Normal"
,
severity
,
msg
)
}
if
r
.
ExternalEventRecorder
!=
nil
{
objRef
,
err
:=
reference
.
GetReference
(
r
.
Scheme
,
&
chart
)
if
err
!=
nil
{
log
.
Error
(
err
,
"unable to send event"
)
return
}
if
err
:=
r
.
ExternalEventRecorder
.
Eventf
(
*
objRef
,
nil
,
severity
,
severity
,
msg
);
err
!=
nil
{
log
.
Error
(
err
,
"unable to send event"
)
return
}
}
}
func
(
r
*
HelmChartReconciler
)
recordReadiness
(
ctx
context.
Context
,
chart
sourcev1.
HelmChart
) {
log
:=
logr
.
FromContext
(
ctx
)
if
r
.
MetricsRecorder
==
nil
{
return
}
objRef
,
err
:=
reference
.
GetReference
(
r
.
Scheme
,
&
chart
)
if
err
!=
nil
{
log
.
Error
(
err
,
"unable to record readiness metric"
)
return
}
if
rc
:=
apimeta
.
FindStatusCondition
(
chart
.
Status
.
Conditions
,
meta
.
ReadyCondition
);
rc
!=
nil
{
r
.
MetricsRecorder
.
RecordCondition
(
*
objRef
,
*
rc
,
!
chart
.
DeletionTimestamp
.
IsZero
())
}
else
{
r
.
MetricsRecorder
.
RecordCondition
(
*
objRef
, metav1.
Condition
{
Type
:
meta
.
ReadyCondition
,
Status
:
metav1
.
ConditionUnknown
,
},
!
chart
.
DeletionTimestamp
.
IsZero
())
}
}
func
(
r
*
HelmChartReconciler
)
updateStatus
(
ctx
context.
Context
,
req
ctrl.
Request
,
newStatus
sourcev1.
HelmChartStatus
)
error
{
var
chart
sourcev1.
HelmChart
if
err
:=
r
.
Get
(
ctx
,
req
.
NamespacedName
,
&
chart
);
err
!=
nil
{
return
err
}
patch
:=
client
.
MergeFrom
(
chart
.
DeepCopy
())
chart
.
Status
=
newStatus
return
r
.
Status
().
Patch
(
ctx
,
&
chart
,
patch
)
}
func
(
r
*
HelmChartReconciler
)
indexHelmRepositoryByURL
(
o
client.
Object
) []
string
{
repo
,
ok
:=
o
.(
*
sourcev1.
HelmRepository
)
if
!
ok
{
panic
(
fmt
.
Sprintf
(
"Expected a HelmRepository, got %T"
,
o
))
}
u
:=
repository
.
NormalizeURL
(
repo
.
Spec
.
URL
)
if
u
!=
""
{
return
[]
string
{
u
}
}
return
nil
}
func
(
r
*
HelmChartReconciler
)
indexHelmChartBySource
(
o
client.
Object
) []
string
{
hc
,
ok
:=
o
.(
*
sourcev1.
HelmChart
)
if
!
ok
{
panic
(
fmt
.
Sprintf
(
"Expected a HelmChart, got %T"
,
o
))
}
return
[]
string
{
fmt
.
Sprintf
(
"%s/%s"
,
hc
.
Spec
.
SourceRef
.
Kind
,
hc
.
Spec
.
SourceRef
.
Name
)}
}
func
(
r
*
HelmChartReconciler
)
resolveDependencyRepository
(
ctx
context.
Context
,
url
string
,
namespace
string
) (
*
sourcev1.
HelmRepository
,
error
) {
listOpts
:=
[]client.
ListOption
{
client
.
InNamespace
(
namespace
),
client.
MatchingFields
{
sourcev1
.
HelmRepositoryURLIndexKey
:
url
},
}
var
list
sourcev1.
HelmRepositoryList
err
:=
r
.
Client
.
List
(
ctx
,
&
list
,
listOpts
...
)
if
err
!=
nil
{
return
nil
,
fmt
.
Errorf
(
"unable to retrieve HelmRepositoryList: %w"
,
err
)
}
if
len
(
list
.
Items
)
>
0
{
return
&
list
.
Items
[
0
],
nil
}
return
nil
,
fmt
.
Errorf
(
"no HelmRepository found for '%s' in '%s' namespace"
,
url
,
namespace
)
}
func
(
r
*
HelmChartReconciler
)
getHelmRepositorySecret
(
ctx
context.
Context
,
repository
*
sourcev1.
HelmRepository
) (
*
corev1.
Secret
,
error
) {
if
repository
.
Spec
.
SecretRef
!=
nil
{
name
:=
types.
NamespacedName
{
Namespace
:
repository
.
GetNamespace
(),
Name
:
repository
.
Spec
.
SecretRef
.
Name
,
}
var
secret
corev1.
Secret
err
:=
r
.
Client
.
Get
(
ctx
,
name
,
&
secret
)
if
err
!=
nil
{
err
=
fmt
.
Errorf
(
"auth secret error: %w"
,
err
)
return
nil
,
err
}
return
&
secret
,
nil
}
return
nil
,
nil
}
func
(
r
*
HelmChartReconciler
)
requestsForHelmRepositoryChange
(
o
client.
Object
) []reconcile.
Request
{
repo
,
ok
:=
o
.(
*
sourcev1.
HelmRepository
)
if
!
ok
{
panic
(
fmt
.
Sprintf
(
"Expected a HelmRepository, got %T"
,
o
))
}
// If we do not have an artifact, we have no requests to make
if
repo
.
GetArtifact
()
==
nil
{
return
nil
}
ctx
:=
context
.
Background
()
var
list
sourcev1.
HelmChartList
if
err
:=
r
.
List
(
ctx
,
&
list
, client.
MatchingFields
{
sourcev1
.
SourceIndexKey
:
fmt
.
Sprintf
(
"%s/%s"
,
sourcev1
.
HelmRepositoryKind
,
repo
.
Name
),
});
err
!=
nil
{
return
nil
}
// TODO(hidde): unlike other places (e.g. the helm-controller),
// we have no reference here to determine if the request is coming
// from the _old_ or _new_ update event, and resources are thus
// enqueued twice.
var
reqs
[]reconcile.
Request
for
_
,
i
:=
range
list
.
Items
{
reqs
=
append
(
reqs
, reconcile.
Request
{
NamespacedName
:
client
.
ObjectKeyFromObject
(
&
i
)})
}
return
reqs
}
func
(
r
*
HelmChartReconciler
)
requestsForGitRepositoryChange
(
o
client.
Object
) []reconcile.
Request
{
repo
,
ok
:=
o
.(
*
sourcev1.
GitRepository
)
if
!
ok
{
panic
(
fmt
.
Sprintf
(
"Expected a GitRepository, got %T"
,
o
))
}
// If we do not have an artifact, we have no requests to make
if
repo
.
GetArtifact
()
==
nil
{
return
nil
}
var
list
sourcev1.
HelmChartList
if
err
:=
r
.
List
(
context
.
TODO
(),
&
list
, client.
MatchingFields
{
sourcev1
.
SourceIndexKey
:
fmt
.
Sprintf
(
"%s/%s"
,
sourcev1
.
GitRepositoryKind
,
repo
.
Name
),
});
err
!=
nil
{
return
nil
}
// TODO(hidde): unlike other places (e.g. the helm-controller),
// we have no reference here to determine if the request is coming
// from the _old_ or _new_ update event, and resources are thus
// enqueued twice.
var
reqs
[]reconcile.
Request
for
_
,
i
:=
range
list
.
Items
{
reqs
=
append
(
reqs
, reconcile.
Request
{
NamespacedName
:
client
.
ObjectKeyFromObject
(
&
i
)})
}
return
reqs
}
func
(
r
*
HelmChartReconciler
)
requestsForBucketChange
(
o
client.
Object
) []reconcile.
Request
{
bucket
,
ok
:=
o
.(
*
sourcev1.
Bucket
)
if
!
ok
{
panic
(
fmt
.
Sprintf
(
"Expected a Bucket, got %T"
,
o
))
}
// If we do not have an artifact, we have no requests to make
if
bucket
.
GetArtifact
()
==
nil
{
return
nil
}
var
list
sourcev1.
HelmChartList
if
err
:=
r
.
List
(
context
.
TODO
(),
&
list
, client.
MatchingFields
{
sourcev1
.
SourceIndexKey
:
fmt
.
Sprintf
(
"%s/%s"
,
sourcev1
.
BucketKind
,
bucket
.
Name
),
});
err
!=
nil
{
return
nil
}
// TODO(hidde): unlike other places (e.g. the helm-controller),
// we have no reference here to determine if the request is coming
// from the _old_ or _new_ update event, and resources are thus
// enqueued twice.
var
reqs
[]reconcile.
Request
for
_
,
i
:=
range
list
.
Items
{
reqs
=
append
(
reqs
, reconcile.
Request
{
NamespacedName
:
client
.
ObjectKeyFromObject
(
&
i
)})
}
return
reqs
}
func
(
r
*
HelmChartReconciler
)
recordSuspension
(
ctx
context.
Context
,
chart
sourcev1.
HelmChart
) {
if
r
.
MetricsRecorder
==
nil
{
return
}
log
:=
logr
.
FromContext
(
ctx
)
objRef
,
err
:=
reference
.
GetReference
(
r
.
Scheme
,
&
chart
)
if
err
!=
nil
{
log
.
Error
(
err
,
"unable to record suspended metric"
)
return
}
if
!
chart
.
DeletionTimestamp
.
IsZero
() {
r
.
MetricsRecorder
.
RecordSuspend
(
*
objRef
,
false
)
}
else
{
r
.
MetricsRecorder
.
RecordSuspend
(
*
objRef
,
chart
.
Spec
.
Suspend
)
}
}
func
reasonForBuildError
(
err
error
)
string
{
var
buildErr
*
chart.
BuildError
if
ok
:=
errors
.
As
(
err
,
&
buildErr
);
!
ok
{
return
sourcev1
.
ChartPullFailedReason
}
switch
buildErr
.
Reason
{
case
chart
.
ErrChartMetadataPatch
,
chart
.
ErrValuesFilesMerge
,
chart
.
ErrDependencyBuild
,
chart
.
ErrChartPackage
:
return
sourcev1
.
ChartPackageFailedReason
default
:
return
sourcev1
.
ChartPullFailedReason
}
}
func
reasonForBuildSuccess
(
result
*
chart.
Build
)
string
{
if
result
.
Packaged
{
return
sourcev1
.
ChartPackageSucceededReason
}
return
sourcev1
.
ChartPullSucceededReason
}
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