swarm: ctx propagation; bmt fixes; pss generic notification framework (#17150)

* cmd/swarm: minor cli flag text adjustments

* swarm/api/http: sticky footer for swarm landing page using flex

* swarm/api/http: sticky footer for error pages and fix for multiple choices

* cmd/swarm, swarm/storage, swarm: fix  mingw on windows test issues

* cmd/swarm: update description of swarm cmd

* swarm: added network ID test

* cmd/swarm: support for smoke tests on the production swarm cluster

* cmd/swarm/swarm-smoke: simplify cluster logic as per suggestion

* swarm: propagate ctx to internal apis (#754)

* swarm/metrics: collect disk measurements

* swarm/bmt: fix io.Writer interface

  * Write now tolerates arbitrary variable buffers
  * added variable buffer tests
  * Write loop and finalise optimisation
  * refactor / rename
  * add tests for empty input

* swarm/pss: (UPDATE) Generic notifications package (#744)

swarm/pss: Generic package for creating pss notification svcs

* swarm: Adding context to more functions

* swarm/api: change colour of landing page in templates

* swarm/api: change landing page to react to enter keypress

6 files changed, 38 insertions, 15 deletions

diff --git a/swarm/network/stream/common_test.go b/swarm/network/stream/common_test.go
index 9d1f997f2..6a2c27401 100644
--- a/swarm/network/stream/common_test.go
+++ b/swarm/network/stream/common_test.go
@@ -250,7 +250,7 @@ func (r *TestRegistry) APIs() []rpc.API {
 }
 
 func readAll(fileStore *storage.FileStore, hash []byte) (int64, error) {
-	r, _ := fileStore.Retrieve(hash)
+	r, _ := fileStore.Retrieve(context.TODO(), hash)
 	buf := make([]byte, 1024)
 	var n int
 	var total int64
diff --git a/swarm/network/stream/delivery_test.go b/swarm/network/stream/delivery_test.go
index b03028c88..cd87557b1 100644
--- a/swarm/network/stream/delivery_test.go
+++ b/swarm/network/stream/delivery_test.go
@@ -345,9 +345,13 @@ func testDeliveryFromNodes(t *testing.T, nodes, conns, chunkCount int, skipCheck
 	// here we distribute chunks of a random file into Stores of nodes 1 to nodes
 	rrFileStore := storage.NewFileStore(newRoundRobinStore(sim.Stores[1:]...), storage.NewFileStoreParams())
 	size := chunkCount * chunkSize
-	fileHash, wait, err := rrFileStore.Store(io.LimitReader(crand.Reader, int64(size)), int64(size), false)
+	ctx := context.TODO()
+	fileHash, wait, err := rrFileStore.Store(ctx, io.LimitReader(crand.Reader, int64(size)), int64(size), false)
 	// wait until all chunks stored
-	wait()
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+	err = wait(ctx)
 	if err != nil {
 		t.Fatal(err.Error())
 	}
@@ -627,9 +631,13 @@ Loop:
 		hashes := make([]storage.Address, chunkCount)
 		for i := 0; i < chunkCount; i++ {
 			// create actual size real chunks
-			hash, wait, err := remoteFileStore.Store(io.LimitReader(crand.Reader, int64(chunkSize)), int64(chunkSize), false)
+			ctx := context.TODO()
+			hash, wait, err := remoteFileStore.Store(ctx, io.LimitReader(crand.Reader, int64(chunkSize)), int64(chunkSize), false)
+			if err != nil {
+				b.Fatalf("expected no error. got %v", err)
+			}
 			// wait until all chunks stored
-			wait()
+			err = wait(ctx)
 			if err != nil {
 				b.Fatalf("expected no error. got %v", err)
 			}
diff --git a/swarm/network/stream/intervals_test.go b/swarm/network/stream/intervals_test.go
index 4e2721cb0..d996cdc7e 100644
--- a/swarm/network/stream/intervals_test.go
+++ b/swarm/network/stream/intervals_test.go
@@ -117,8 +117,12 @@ func testIntervals(t *testing.T, live bool, history *Range, skipCheck bool) {
 
 	fileStore := storage.NewFileStore(sim.Stores[0], storage.NewFileStoreParams())
 	size := chunkCount * chunkSize
-	_, wait, err := fileStore.Store(io.LimitReader(crand.Reader, int64(size)), int64(size), false)
-	wait()
+	ctx := context.TODO()
+	_, wait, err := fileStore.Store(ctx, io.LimitReader(crand.Reader, int64(size)), int64(size), false)
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = wait(ctx)
 	if err != nil {
 		t.Fatal(err)
 	}
diff --git a/swarm/network/stream/snapshot_retrieval_test.go b/swarm/network/stream/snapshot_retrieval_test.go
index 59c776c30..da5253e8a 100644
--- a/swarm/network/stream/snapshot_retrieval_test.go
+++ b/swarm/network/stream/snapshot_retrieval_test.go
@@ -410,7 +410,7 @@ func runFileRetrievalTest(nodeCount int) error {
 		fileStore := registries[id].fileStore
 		//check all chunks
 		for i, hash := range conf.hashes {
-			reader, _ := fileStore.Retrieve(hash)
+			reader, _ := fileStore.Retrieve(context.TODO(), hash)
 			//check that we can read the file size and that it corresponds to the generated file size
 			if s, err := reader.Size(nil); err != nil || s != int64(len(randomFiles[i])) {
 				allSuccess = false
@@ -697,7 +697,7 @@ func runRetrievalTest(chunkCount int, nodeCount int) error {
 		fileStore := registries[id].fileStore
 		//check all chunks
 		for _, chnk := range conf.hashes {
-			reader, _ := fileStore.Retrieve(chnk)
+			reader, _ := fileStore.Retrieve(context.TODO(), chnk)
 			//assuming that reading the Size of the chunk is enough to know we found it
 			if s, err := reader.Size(nil); err != nil || s != chunkSize {
 				allSuccess = false
@@ -765,9 +765,13 @@ func uploadFilesToNodes(nodes []*simulations.Node) ([]storage.Address, []string,
 			return nil, nil, err
 		}
 		//store it (upload it) on the FileStore
-		rk, wait, err := fileStore.Store(strings.NewReader(rfiles[i]), int64(len(rfiles[i])), false)
+		ctx := context.TODO()
+		rk, wait, err := fileStore.Store(ctx, strings.NewReader(rfiles[i]), int64(len(rfiles[i])), false)
 		log.Debug("Uploaded random string file to node")
-		wait()
+		if err != nil {
+			return nil, nil, err
+		}
+		err = wait(ctx)
 		if err != nil {
 			return nil, nil, err
 		}
diff --git a/swarm/network/stream/snapshot_sync_test.go b/swarm/network/stream/snapshot_sync_test.go
index ff1c39319..fd8863d43 100644
--- a/swarm/network/stream/snapshot_sync_test.go
+++ b/swarm/network/stream/snapshot_sync_test.go
@@ -581,8 +581,12 @@ func uploadFileToSingleNodeStore(id discover.NodeID, chunkCount int) ([]storage.
 	fileStore := storage.NewFileStore(lstore, storage.NewFileStoreParams())
 	var rootAddrs []storage.Address
 	for i := 0; i < chunkCount; i++ {
-		rk, wait, err := fileStore.Store(io.LimitReader(crand.Reader, int64(size)), int64(size), false)
-		wait()
+		ctx := context.TODO()
+		rk, wait, err := fileStore.Store(ctx, io.LimitReader(crand.Reader, int64(size)), int64(size), false)
+		if err != nil {
+			return nil, err
+		}
+		err = wait(ctx)
 		if err != nil {
 			return nil, err
 		}
diff --git a/swarm/network/stream/syncer_test.go b/swarm/network/stream/syncer_test.go
index 68e20841d..5fea7befe 100644
--- a/swarm/network/stream/syncer_test.go
+++ b/swarm/network/stream/syncer_test.go
@@ -202,9 +202,12 @@ func testSyncBetweenNodes(t *testing.T, nodes, conns, chunkCount int, skipCheck
 		// here we distribute chunks of a random file into stores 1...nodes
 		rrFileStore := storage.NewFileStore(newRoundRobinStore(sim.Stores[1:]...), storage.NewFileStoreParams())
 		size := chunkCount * chunkSize
-		_, wait, err := rrFileStore.Store(io.LimitReader(crand.Reader, int64(size)), int64(size), false)
+		_, wait, err := rrFileStore.Store(ctx, io.LimitReader(crand.Reader, int64(size)), int64(size), false)
+		if err != nil {
+			t.Fatal(err.Error())
+		}
 		// need to wait cos we then immediately collect the relevant bin content
-		wait()
+		wait(ctx)
 		if err != nil {
 			t.Fatal(err.Error())
 		}