[ARVADOS] created: a8aec576a4047a27f6ec4227258393d2f7fef59d

Git user git at public.curoverse.com
Fri Jul 7 16:24:09 EDT 2017


        at  a8aec576a4047a27f6ec4227258393d2f7fef59d (commit)


commit a8aec576a4047a27f6ec4227258393d2f7fef59d
Author: Tom Clegg <tom at curoverse.com>
Date:   Fri Jul 7 16:01:13 2017 -0400

    11945: Key collection cache on pdh+token.
    
    Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tom at curoverse.com>

diff --git a/services/keep-web/cache.go b/services/keep-web/cache.go
index d72effc..c29ae7d 100644
--- a/services/keep-web/cache.go
+++ b/services/keep-web/cache.go
@@ -118,7 +118,7 @@ func (c *cache) Get(arv *arvadosclient.ArvadosClient, targetID string, forceRelo
 
 	var collection *arvados.Collection
 	if pdh != "" {
-		collection = c.lookupCollection(pdh)
+		collection = c.lookupCollection(arv.ApiToken + "\000" + pdh)
 	}
 
 	if collection != nil && permOK {
@@ -150,7 +150,7 @@ func (c *cache) Get(arv *arvadosclient.ArvadosClient, targetID string, forceRelo
 			// PDH changed, but now we know we have
 			// permission -- and maybe we already have the
 			// new PDH in the cache.
-			if coll := c.lookupCollection(current.PortableDataHash); coll != nil {
+			if coll := c.lookupCollection(arv.ApiToken + "\000" + current.PortableDataHash); coll != nil {
 				return coll, nil
 			}
 		}
@@ -170,14 +170,13 @@ func (c *cache) Get(arv *arvadosclient.ArvadosClient, targetID string, forceRelo
 		expire: exp,
 		pdh:    collection.PortableDataHash,
 	})
-	// Disabled, see #11945
-	// c.collections.Add(collection.PortableDataHash, &cachedCollection{
-	// 	expire:     exp,
-	// 	collection: collection,
-	// })
-	// if int64(len(collection.ManifestText)) > c.MaxCollectionBytes/int64(c.MaxCollectionEntries) {
-	// 	go c.pruneCollections()
-	// }
+	c.collections.Add(arv.ApiToken+"\000"+collection.PortableDataHash, &cachedCollection{
+		expire:     exp,
+		collection: collection,
+	})
+	if int64(len(collection.ManifestText)) > c.MaxCollectionBytes/int64(c.MaxCollectionEntries) {
+		go c.pruneCollections()
+	}
 	return collection, nil
 }
 
@@ -238,15 +237,13 @@ func (c *cache) collectionBytes() uint64 {
 	return size
 }
 
-func (c *cache) lookupCollection(pdh string) *arvados.Collection {
-	if pdh == "" {
-		return nil
-	} else if ent, cached := c.collections.Get(pdh); !cached {
+func (c *cache) lookupCollection(key string) *arvados.Collection {
+	if ent, cached := c.collections.Get(key); !cached {
 		return nil
 	} else {
 		ent := ent.(*cachedCollection)
 		if ent.expire.Before(time.Now()) {
-			c.collections.Remove(pdh)
+			c.collections.Remove(key)
 			return nil
 		} else {
 			atomic.AddUint64(&c.stats.CollectionHits, 1)
diff --git a/services/keep-web/cache_test.go b/services/keep-web/cache_test.go
index 0532527..cddeaf4 100644
--- a/services/keep-web/cache_test.go
+++ b/services/keep-web/cache_test.go
@@ -5,14 +5,13 @@
 package main
 
 import (
+	"git.curoverse.com/arvados.git/sdk/go/arvados"
 	"git.curoverse.com/arvados.git/sdk/go/arvadosclient"
 	"git.curoverse.com/arvados.git/sdk/go/arvadostest"
 	"gopkg.in/check.v1"
 )
 
 func (s *UnitSuite) TestCache(c *check.C) {
-	c.Skip("see #11945")
-
 	arv, err := arvadosclient.MakeArvadosClient()
 	c.Assert(err, check.Equals, nil)
 
@@ -22,8 +21,9 @@ func (s *UnitSuite) TestCache(c *check.C) {
 	// the first req should cause an API call; the next 4 should
 	// hit all caches.
 	arv.ApiToken = arvadostest.AdminToken
+	var coll *arvados.Collection
 	for i := 0; i < 5; i++ {
-		coll, err := cache.Get(arv, arvadostest.FooCollection, false)
+		coll, err = cache.Get(arv, arvadostest.FooCollection, false)
 		c.Check(err, check.Equals, nil)
 		c.Assert(coll, check.NotNil)
 		c.Check(coll.PortableDataHash, check.Equals, arvadostest.FooPdh)
@@ -37,18 +37,32 @@ func (s *UnitSuite) TestCache(c *check.C) {
 
 	// Hit the same collection 2 more times, this time requesting
 	// it by PDH and using a different token. The first req should
-	// miss the permission cache. Both reqs should hit the
-	// Collection cache and skip the API lookup.
+	// miss the permission cache and fetch the new manifest; the
+	// second should hit the Collection cache and skip the API
+	// lookup.
 	arv.ApiToken = arvadostest.ActiveToken
-	for i := 0; i < 2; i++ {
-		coll, err := cache.Get(arv, arvadostest.FooPdh, false)
-		c.Check(err, check.Equals, nil)
-		c.Assert(coll, check.NotNil)
-		c.Check(coll.PortableDataHash, check.Equals, arvadostest.FooPdh)
-		c.Check(coll.ManifestText[:2], check.Equals, ". ")
-	}
+
+	coll2, err := cache.Get(arv, arvadostest.FooPdh, false)
+	c.Check(err, check.Equals, nil)
+	c.Assert(coll2, check.NotNil)
+	c.Check(coll2.PortableDataHash, check.Equals, arvadostest.FooPdh)
+	c.Check(coll2.ManifestText[:2], check.Equals, ". ")
+	c.Check(coll2.ManifestText, check.Not(check.Equals), coll.ManifestText)
+
+	c.Check(cache.Stats().Requests, check.Equals, uint64(5+1))
+	c.Check(cache.Stats().CollectionHits, check.Equals, uint64(4+0))
+	c.Check(cache.Stats().PermissionHits, check.Equals, uint64(4+0))
+	c.Check(cache.Stats().PDHHits, check.Equals, uint64(4+0))
+	c.Check(cache.Stats().APICalls, check.Equals, uint64(1+1))
+
+	coll2, err = cache.Get(arv, arvadostest.FooPdh, false)
+	c.Check(err, check.Equals, nil)
+	c.Assert(coll2, check.NotNil)
+	c.Check(coll2.PortableDataHash, check.Equals, arvadostest.FooPdh)
+	c.Check(coll2.ManifestText[:2], check.Equals, ". ")
+
 	c.Check(cache.Stats().Requests, check.Equals, uint64(5+2))
-	c.Check(cache.Stats().CollectionHits, check.Equals, uint64(4+2))
+	c.Check(cache.Stats().CollectionHits, check.Equals, uint64(4+1))
 	c.Check(cache.Stats().PermissionHits, check.Equals, uint64(4+1))
 	c.Check(cache.Stats().PDHHits, check.Equals, uint64(4+0))
 	c.Check(cache.Stats().APICalls, check.Equals, uint64(1+1))
@@ -67,15 +81,13 @@ func (s *UnitSuite) TestCache(c *check.C) {
 		c.Check(err, check.Equals, nil)
 	}
 	c.Check(cache.Stats().Requests, check.Equals, uint64(5+2+20))
-	c.Check(cache.Stats().CollectionHits, check.Equals, uint64(4+2+18))
+	c.Check(cache.Stats().CollectionHits, check.Equals, uint64(4+1+18))
 	c.Check(cache.Stats().PermissionHits, check.Equals, uint64(4+1+18))
 	c.Check(cache.Stats().PDHHits, check.Equals, uint64(4+0+18))
 	c.Check(cache.Stats().APICalls, check.Equals, uint64(1+1+2))
 }
 
 func (s *UnitSuite) TestCacheForceReloadByPDH(c *check.C) {
-	c.Skip("see #11945")
-
 	arv, err := arvadosclient.MakeArvadosClient()
 	c.Assert(err, check.Equals, nil)
 
@@ -94,8 +106,6 @@ func (s *UnitSuite) TestCacheForceReloadByPDH(c *check.C) {
 }
 
 func (s *UnitSuite) TestCacheForceReloadByUUID(c *check.C) {
-	c.Skip("see #11945")
-
 	arv, err := arvadosclient.MakeArvadosClient()
 	c.Assert(err, check.Equals, nil)
 

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