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Call Cache.DeleteDelayed if the item phase is terminal (flyteorg#212)
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* Call Cache.DeleteDelayed if the item in the cache no longer needs to be monitored

Signed-off-by: Haytham Abuelfutuh <[email protected]>

* Update to released deps

Signed-off-by: Haytham Abuelfutuh <[email protected]>

* PR Comments

Signed-off-by: Haytham Abuelfutuh <[email protected]>

* update stdlib

Signed-off-by: Haytham Abuelfutuh <[email protected]>

* Fix unit test

Signed-off-by: Haytham Abuelfutuh <[email protected]>

* Add docs to unit test

Signed-off-by: Haytham Abuelfutuh <[email protected]>
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EngHabu authored Sep 23, 2021
1 parent a80a961 commit 565b532
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Showing 5 changed files with 95 additions and 6 deletions.
2 changes: 1 addition & 1 deletion flyteplugins/go.mod
Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,7 @@ require (
github.com/aws/aws-sdk-go-v2/service/athena v1.0.0
github.com/coocood/freecache v1.1.1
github.com/flyteorg/flyteidl v0.21.0
github.com/flyteorg/flytestdlib v0.3.33
github.com/flyteorg/flytestdlib v0.3.36
github.com/go-logr/zapr v0.4.0 // indirect
github.com/go-test/deep v1.0.7
github.com/golang/protobuf v1.4.3
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4 changes: 2 additions & 2 deletions flyteplugins/go.sum
Original file line number Diff line number Diff line change
Expand Up @@ -229,8 +229,8 @@ github.com/fatih/structtag v1.2.0/go.mod h1:mBJUNpUnHmRKrKlQQlmCrh5PuhftFbNv8Ys4
github.com/flyteorg/flyteidl v0.21.0 h1:AwHNusfxJMfRRSDk2QWfb3aIlyLJrFWVGtpXCbCtJ5A=
github.com/flyteorg/flyteidl v0.21.0/go.mod h1:576W2ViEyjTpT+kEVHAGbrTP3HARNUZ/eCwrNPmdx9U=
github.com/flyteorg/flytestdlib v0.3.13/go.mod h1:Tz8JCECAbX6VWGwFT6cmEQ+RJpZ/6L9pswu3fzWs220=
github.com/flyteorg/flytestdlib v0.3.33 h1:+oCx3zXUIldL7CWmNMD7PMFPXvGqaPgYkSKn9wB6qvY=
github.com/flyteorg/flytestdlib v0.3.33/go.mod h1:7cDWkY3v7xsoesFcDdu6DSW5Q2U2W5KlHUbUHSwBG1Q=
github.com/flyteorg/flytestdlib v0.3.36 h1:XLvc7kfc9XkQBpPvNXevh5+Ijbgmd7gEOHTWhdEY5eA=
github.com/flyteorg/flytestdlib v0.3.36/go.mod h1:7cDWkY3v7xsoesFcDdu6DSW5Q2U2W5KlHUbUHSwBG1Q=
github.com/form3tech-oss/jwt-go v3.2.2+incompatible h1:TcekIExNqud5crz4xD2pavyTgWiPvpYe4Xau31I0PRk=
github.com/form3tech-oss/jwt-go v3.2.2+incompatible/go.mod h1:pbq4aXjuKjdthFRnoDwaVPLA+WlJuPGy+QneDUgJi2k=
github.com/franela/goblin v0.0.0-20200105215937-c9ffbefa60db/go.mod h1:7dvUGVsVBjqR7JHJk0brhHOZYGmfBYOrK0ZhYMEtBr4=
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Original file line number Diff line number Diff line change
Expand Up @@ -101,7 +101,7 @@ func (q *ResourceCache) SyncResource(ctx context.Context, batch cache.Batch) (
logger.Debugf(ctx, "Querying AsyncPlugin for %s", resource.GetID())
newResource, err := q.client.Get(ctx, newPluginContext(cacheItem.ResourceMeta, cacheItem.Resource, "", nil))
if err != nil {
logger.Errorf(ctx, "Error retrieving resource [%s]. Error: %v", resource.GetID(), err)
logger.Infof(ctx, "Error retrieving resource [%s]. Error: %v", resource.GetID(), err)
cacheItem.SyncFailureCount++

// Make sure we don't return nil for the first argument, because that deletes it from the cache.
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13 changes: 11 additions & 2 deletions flyteplugins/go/tasks/pluginmachinery/internal/webapi/monitor.go
Original file line number Diff line number Diff line change
Expand Up @@ -16,8 +16,8 @@ func monitor(ctx context.Context, tCtx core.TaskExecutionContext, p Client, cach
State: *state,
}

item, err := cache.GetOrCreate(
tCtx.TaskExecutionMetadata().GetTaskExecutionID().GetGeneratedName(), newCacheItem)
cacheItemID := tCtx.TaskExecutionMetadata().GetTaskExecutionID().GetGeneratedName()
item, err := cache.GetOrCreate(cacheItemID, newCacheItem)
if err != nil {
return nil, core.PhaseInfo{}, err
}
Expand Down Expand Up @@ -50,6 +50,15 @@ func monitor(ctx context.Context, tCtx core.TaskExecutionContext, p Client, cach

cacheItem.Phase = newPluginPhase

if newPluginPhase.IsTerminal() {
// Queue item for deletion in the cache.
err = cache.DeleteDelayed(cacheItemID)
if err != nil {
logger.Warnf(ctx, "Failed to queue item for deletion in the cache with Item Id: [%v]. Error: %v",
cacheItemID, err)
}
}

// If there were updates made to the state, we'll have picked them up automatically. Nothing more to do.
return &cacheItem.State, newPhase, nil
}
Original file line number Diff line number Diff line change
@@ -0,0 +1,80 @@
package webapi

import (
"context"
"sync"
"testing"
"time"

"github.com/flyteorg/flytestdlib/cache"
"github.com/flyteorg/flytestdlib/promutils"
"k8s.io/apimachinery/pkg/util/rand"
"k8s.io/client-go/util/workqueue"

core2 "github.com/flyteorg/flyteplugins/go/tasks/pluginmachinery/core"

"github.com/stretchr/testify/mock"

"github.com/flyteorg/flyteidl/gen/pb-go/flyteidl/core"

"github.com/stretchr/testify/assert"

"github.com/flyteorg/flyteplugins/go/tasks/pluginmachinery/core/mocks"
internalMocks "github.com/flyteorg/flyteplugins/go/tasks/pluginmachinery/internal/webapi/mocks"
)

func Test_monitor(t *testing.T) {
ctx := context.Background()
tCtx := &mocks.TaskExecutionContext{}
ctxMeta := &mocks.TaskExecutionMetadata{}
execID := &mocks.TaskExecutionID{}
execID.OnGetGeneratedName().Return("generated_name")
execID.OnGetID().Return(core.TaskExecutionIdentifier{})
ctxMeta.OnGetTaskExecutionID().Return(execID)
tCtx.OnTaskExecutionMetadata().Return(ctxMeta)

client := &internalMocks.Client{}
client.OnStatusMatch(ctx, mock.Anything).Return(core2.PhaseInfoSuccess(nil), nil)

wg := sync.WaitGroup{}
wg.Add(4)
cacheObj, err := cache.NewAutoRefreshCache(rand.String(5), func(ctx context.Context, batch cache.Batch) (updatedBatch []cache.ItemSyncResponse, err error) {
wg.Done()
t.Logf("Syncing Item [%+v]", batch[0])
return []cache.ItemSyncResponse{
{
ID: batch[0].GetID(),
Item: batch[0].GetItem(),
Action: cache.Update,
},
}, nil
}, workqueue.DefaultControllerRateLimiter(), time.Second, 1, 10, promutils.NewTestScope())
assert.NoError(t, err)

assert.NoError(t, cacheObj.Start(ctx))

// Insert a dummy item to make sure the sync loop keeps getting invoked
_, err = cacheObj.GetOrCreate("generated_name2", CacheItem{Resource: "fake_resource2"})
assert.NoError(t, err)

_, err = cacheObj.GetOrCreate("generated_name", CacheItem{Resource: "fake_resource"})
assert.NoError(t, err)

s := &State{}
newState, phaseInfo, err := monitor(ctx, tCtx, client, cacheObj, s)
assert.NoError(t, err)
assert.NotNil(t, newState)
assert.NotNil(t, phaseInfo)
assert.Equal(t, core2.PhaseSuccess.String(), phaseInfo.Phase().String())

// Make sure the item is still in the cache as is...
cachedItem, err := cacheObj.GetOrCreate("generated_name", CacheItem{Resource: "shouldnt_insert"})
assert.NoError(t, err)
assert.Equal(t, "fake_resource", cachedItem.(CacheItem).Resource.(string))

// Wait for sync to run to actually delete the resource
wg.Wait()
cachedItem, err = cacheObj.GetOrCreate("generated_name", CacheItem{Resource: "new_resource"})
assert.NoError(t, err)
assert.Equal(t, "new_resource", cachedItem.(CacheItem).Resource.(string))
}

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