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cmd/swarm/global-store: add comments

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This commit is contained in:
Janos Guljas 2019-01-31 15:03:47 +01:00
parent 4ab38f28bb
commit 421749f90a
2 changed files with 31 additions and 0 deletions
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7
cmd/swarm/global-store/global_store.go
View file

@ -29,6 +29,8 @@ import (
cli "gopkg.in/urfave/cli.v1" cli "gopkg.in/urfave/cli.v1"
) )
// startHTTP starts a global store with HTTP RPC server.
// It is used for "http" cli command.
func startHTTP(ctx *cli.Context) (err error) { func startHTTP(ctx *cli.Context) (err error) {
server, cleanup, err := newServer(ctx) server, cleanup, err := newServer(ctx)
if err != nil { if err != nil {
@ -45,6 +47,8 @@ func startHTTP(ctx *cli.Context) (err error) {
return http.Serve(listener, server) return http.Serve(listener, server)
} }
// startWS starts a global store with WebSocket RPC server.
// It is used for "websocket" cli command.
func startWS(ctx *cli.Context) (err error) { func startWS(ctx *cli.Context) (err error) {
server, cleanup, err := newServer(ctx) server, cleanup, err := newServer(ctx)
if err != nil { if err != nil {
@ -62,6 +66,8 @@ func startWS(ctx *cli.Context) (err error) {
return http.Serve(listener, server.WebsocketHandler(origins)) return http.Serve(listener, server.WebsocketHandler(origins))
} }
// newServer creates a global store and returns its RPC server.
// Returned cleanup function should be called only if err is nil.
func newServer(ctx *cli.Context) (server *rpc.Server, cleanup func(), err error) { func newServer(ctx *cli.Context) (server *rpc.Server, cleanup func(), err error) {
log.PrintOrigins(true) log.PrintOrigins(true)
log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(ctx.Int("verbosity")), log.StreamHandler(os.Stdout, log.TerminalFormat(true)))) log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(ctx.Int("verbosity")), log.StreamHandler(os.Stdout, log.TerminalFormat(true))))
@ -86,6 +92,7 @@ func newServer(ctx *cli.Context) (server *rpc.Server, cleanup func(), err error)
server = rpc.NewServer() server = rpc.NewServer()
if err := server.RegisterName("mockStore", globalStore); err != nil { if err := server.RegisterName("mockStore", globalStore); err != nil {
cleanup()
return nil, nil, err return nil, nil, err
} }

24
cmd/swarm/global-store/global_store_test.go
View file

@ -30,10 +30,14 @@ import (
mockRPC "github.com/ethereum/go-ethereum/swarm/storage/mock/rpc" mockRPC "github.com/ethereum/go-ethereum/swarm/storage/mock/rpc"
) )
// TestHTTP_InMemory tests in-memory global store that exposes
// HTTP server.
func TestHTTP_InMemory(t *testing.T) { func TestHTTP_InMemory(t *testing.T) {
testHTTP(t, true) testHTTP(t, true)
} }
// TestHTTP_Database tests global store with persisted database
// that exposes HTTP server.
func TestHTTP_Database(t *testing.T) { func TestHTTP_Database(t *testing.T) {
dir, err := ioutil.TempDir("", "swarm-global-store-") dir, err := ioutil.TempDir("", "swarm-global-store-")
if err != nil { if err != nil {
@ -41,11 +45,18 @@ func TestHTTP_Database(t *testing.T) {
} }
defer os.RemoveAll(dir) defer os.RemoveAll(dir)
// create a fresh global store
testHTTP(t, true, "--dir", dir) testHTTP(t, true, "--dir", dir)
// check if data saved by the previous global store instance
testHTTP(t, false, "--dir", dir) testHTTP(t, false, "--dir", dir)
} }
// testWebsocket starts global store binary with HTTP server
// and validates that it can store and retrieve data.
// If put is false, no data will be stored, only retrieved,
// giving the possibility to check if data is present in the
// storage directory.
func testHTTP(t *testing.T, put bool, args ...string) { func testHTTP(t *testing.T, put bool, args ...string) {
addr := findFreeTCPAddress(t) addr := findFreeTCPAddress(t)
testCmd := runGlobalStore(t, append([]string{"http", "--addr", addr}, args...)...) testCmd := runGlobalStore(t, append([]string{"http", "--addr", addr}, args...)...)
@ -94,10 +105,14 @@ func testHTTP(t *testing.T, put bool, args ...string) {
} }
} }
// TestWebsocket_InMemory tests in-memory global store that exposes
// WebSocket server.
func TestWebsocket_InMemory(t *testing.T) { func TestWebsocket_InMemory(t *testing.T) {
testWebsocket(t, true) testWebsocket(t, true)
} }
// TestWebsocket_Database tests global store with persisted database
// that exposes HTTP server.
func TestWebsocket_Database(t *testing.T) { func TestWebsocket_Database(t *testing.T) {
dir, err := ioutil.TempDir("", "swarm-global-store-") dir, err := ioutil.TempDir("", "swarm-global-store-")
if err != nil { if err != nil {
@ -105,11 +120,18 @@ func TestWebsocket_Database(t *testing.T) {
} }
defer os.RemoveAll(dir) defer os.RemoveAll(dir)
// create a fresh global store
testWebsocket(t, true, "--dir", dir) testWebsocket(t, true, "--dir", dir)
// check if data saved by the previous global store instance
testWebsocket(t, false, "--dir", dir) testWebsocket(t, false, "--dir", dir)
} }
// testWebsocket starts global store binary with WebSocket server
// and validates that it can store and retrieve data.
// If put is false, no data will be stored, only retrieved,
// giving the possibility to check if data is present in the
// storage directory.
func testWebsocket(t *testing.T, put bool, args ...string) { func testWebsocket(t *testing.T, put bool, args ...string) {
addr := findFreeTCPAddress(t) addr := findFreeTCPAddress(t)
testCmd := runGlobalStore(t, append([]string{"ws", "--addr", addr}, args...)...) testCmd := runGlobalStore(t, append([]string{"ws", "--addr", addr}, args...)...)
@ -154,6 +176,8 @@ func testWebsocket(t *testing.T, put bool, args ...string) {
} }
} }
// findFreeTCPAddress returns a local address (IP:Port) to which
// global store can listen on.
func findFreeTCPAddress(t *testing.T) (addr string) { func findFreeTCPAddress(t *testing.T) (addr string) {
t.Helper() t.Helper()