Fear #277: Add test about wanted < 0

License: MIT
Signed-off-by: Hector Sanjuan <code@hector.link>

cluster.go

@@ -943,13 +943,8 @@ func (c *Cluster) Pins() []api.Pin {
 // the item is successfully pinned. For that, use Status(). PinGet
 // returns an error if the given Cid is not part of the global state.
 func (c *Cluster) PinGet(h *cid.Cid) (api.Pin, error) {
-	cState, err := c.consensus.State()
+	pin := c.getCurrentPin(h)
-	if err != nil {
+	if pin.ReplicationFactorMin == 0 && pin.ReplicationFactorMax == 0 {
-		logger.Error(err)
-		return api.Pin{}, err
-	}
-	pin := cState.Get(h)
-	if pin.Cid == nil {
 		return pin, errors.New("cid is not part of the global state")
 	}
 	return pin, nil

cluster_test.go

@@ -198,7 +198,11 @@ func TestClusterPin(t *testing.T) {
 
 	// test an error case
 	cl.consensus.Shutdown()
-	err = cl.Pin(api.PinCid(c))
+	err = cl.Pin(api.Pin{
+		Cid:                  c,
+		ReplicationFactorMax: 1,
+		ReplicationFactorMin: 1,
+	})
 	if err == nil {
 		t.Error("expected an error but things worked")
 	}
@@ -239,7 +243,7 @@ func TestClusterPinGet(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if !pin.Cid.Equals(c) || pin.ReplicationFactorMax != -1 || pin.ReplicationFactorMax != -1 {
+	if !pin.Cid.Equals(c) || pin.ReplicationFactorMin != -1 || pin.ReplicationFactorMax != -1 {
 		t.Error("the Pin does not look as expected")
 	}
 

ipfs-cluster-ctl/formatters.go

@@ -159,16 +159,16 @@ func textFormatPrintVersion(obj *api.Version) {
 }
 
 func textFormatPrintPin(obj *api.PinSerial) {
-	fmt.Printf("%s | %s | Repl. Factor: %d.to.%d | Allocations: ",
+	fmt.Printf("%s | %s | ", obj.Cid, obj.Name)
-		obj.Cid, obj.Name,
-		obj.ReplicationFactorMin, obj.ReplicationFactorMax)
 
 	if obj.ReplicationFactorMin < 0 {
-		fmt.Printf("[everywhere]\n")
+		fmt.Printf("Repl. Factor: -1 | Allocations: [everywhere]\n")
 	} else {
 		var sortAlloc sort.StringSlice = obj.Allocations
 		sortAlloc.Sort()
-		fmt.Printf("%s\n", sortAlloc)
+		fmt.Printf("Repl. Factor: %d->%d | Allocations: %s\n",
+			obj.ReplicationFactorMin, obj.ReplicationFactorMax,
+			sortAlloc)
 	}
 }
 

ipfscluster_test.go

@@ -868,12 +868,64 @@ func TestClustersReplicationFactorMax(t *testing.T) {
 		}
 
 		if p.ReplicationFactorMax != nClusters-1 {
-			t.Error("rplMax should be nClusters")
+			t.Error("rplMax should be nClusters-1")
 		}
 	}
 	runF(t, clusters, f)
 }
 
+// This tests checks that repinning something that is overpinned
+// removes some allocations
+func TestClustersReplicationFactorMaxLower(t *testing.T) {
+	if nClusters < 5 {
+		t.Skip("Need at least 5 peers")
+	}
+
+	clusters, mock := createClusters(t)
+	defer shutdownClusters(t, clusters, mock)
+	for _, c := range clusters {
+		c.config.ReplicationFactorMin = 1
+		c.config.ReplicationFactorMax = nClusters
+	}
+
+	h, _ := cid.Decode(test.TestCid1)
+	err := clusters[0].Pin(api.PinCid(h))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	delay()
+
+	p1, err := clusters[0].PinGet(h)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if len(p1.Allocations) != nClusters {
+		t.Fatal("allocations should be nClusters")
+	}
+
+	err = clusters[0].Pin(api.Pin{
+		Cid:                  h,
+		ReplicationFactorMax: 2,
+		ReplicationFactorMin: 1,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	delay()
+
+	p2, err := clusters[0].PinGet(h)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if len(p2.Allocations) != 2 {
+		t.Fatal("allocations should have been reduced to 2")
+	}
+}
+
 // This test checks that when not all nodes are available,
 // we pin in as many as we can aiming for ReplicationFactorMax
 func TestClustersReplicationFactorInBetween(t *testing.T) {
@@ -917,7 +969,7 @@ func TestClustersReplicationFactorInBetween(t *testing.T) {
 		}
 
 		if len(p.Allocations) != nClusters-2 {
-			t.Error("should have pinned nClusters - 1 allocations")
+			t.Error("should have pinned nClusters-2 allocations")
 		}
 
 		if p.ReplicationFactorMin != 1 {
@@ -1017,7 +1069,7 @@ func TestClustersReplicationMinMaxNoRealloc(t *testing.T) {
 	}
 }
 
-// This test checks tat repinning something that has becomed
+// This test checks that repinning something that has becomed
 // underpinned does re-allocations when it's not sufficiently
 // pinned anymore
 func TestClustersReplicationMinMaxRealloc(t *testing.T) {
@@ -1080,10 +1132,6 @@ func TestClustersReplicationMinMaxRealloc(t *testing.T) {
 
 	secondAllocations := p.Allocations
 
-	if len(secondAllocations) != minInt(nClusters-2, 4) {
-		t.Error("pin should be allocated again to a few peers")
-	}
-
 	strings1 := api.PeersToStrings(firstAllocations)
 	strings2 := api.PeersToStrings(secondAllocations)
 	sort.Strings(strings1)
@@ -1095,6 +1143,12 @@ func TestClustersReplicationMinMaxRealloc(t *testing.T) {
 		t.Error("allocations should have changed")
 	}
 
+	lenSA := len(secondAllocations)
+	expected := minInt(nClusters-2, 4)
+	if lenSA != expected {
+		t.Errorf("Inssufficient reallocation, could have allocated to %d peers but instead only allocated to %d peers", expected, lenSA)
+	}
+
 	if len(secondAllocations) < 3 {
 		t.Error("allocations should be more than rplMin")
 	}

pintracker/maptracker/maptracker.go

@@ -181,9 +181,12 @@ func (mpt *MapPinTracker) unsafeSetError(c *cid.Cid, err error) {
 }
 
 func (mpt *MapPinTracker) isRemote(c api.Pin) bool {
-	if c.ReplicationFactorMin < 0 {
+	if c.ReplicationFactorMax < 0 {
 		return false
 	}
+	if c.ReplicationFactorMax == 0 {
+		logger.Errorf("Pin with replication factor 0! %+v", c)
+	}
 
 	for _, p := range c.Allocations {
 		if p == mpt.peerID {

sharness/lib/test-lib.sh

@@ -1,3 +1,5 @@
+#!/bin/bash
+
 # Sharness test framework for ipfs-cluster
 #
 # We are using sharness (https://github.com/mlafeldt/sharness)
@@ -107,7 +109,7 @@ test_confirm_importState() {
 }
 
 cluster_kill(){
-    kill -1 "$CLUSTER_D_PID"
+    kill -1 "$CLUSTER_D_PID" &>/dev/null
     while pgrep ipfs-cluster-service >/dev/null; do
         sleep 0.2
     done
@@ -126,8 +128,8 @@ cluster_start(){
 
 # Cleanup functions
 test_clean_ipfs(){
-    docker kill ipfs
+    docker kill ipfs >/dev/null
-    docker rm ipfs
+    docker rm ipfs >/dev/null
     sleep 1
 }
 

sharness/t0052-service-state-export.sh

@@ -9,7 +9,8 @@ test_cluster_init
 
 
 test_expect_success IPFS,CLUSTER "state export fails without snapshots" '
-    cluster_kill && sleep 5 &&
+    cluster_kill
+    sleep 5
     test_expect_code 1 ipfs-cluster-service --debug --config "test-config" state export
 '
 

sharness/t0053-service-state-import.sh

@@ -18,6 +18,7 @@ test_expect_success IPFS,CLUSTER "state import fails on incorrect format" '
 '
 
 test_expect_success IPFS,CLUSTER,IMPORTSTATE "state import succeeds on correct format" '
+    sleep 5
     cid=`docker exec ipfs sh -c "echo test_53 | ipfs add -q"` &&
     ipfs-cluster-service -f --debug --config "test-config" state import importState &&
     cluster_start &&

sharness/test_data/importState

@@ -3,6 +3,7 @@
         "cid": "QmbrCtydGyPeHiLURSPMqrvE5mCgMCwFYq3UD4XLCeAYw6",
         "name": "",
         "allocations": [],
-        "replication_factor": -1
+        "replication_factor_min": -1,
+        "replication_factor_max": -1
     }
 ]