// GoNetworkAddress converts a Java NetworkAddress object into Go net.Addr.
func GoNetworkAddress(env jutil.Env, jAddr jutil.Object) (net.Addr, error) {
network, err := jutil.CallStringMethod(env, jAddr, "network", nil)
if err != nil {
return nil, err
}
addr, err := jutil.CallStringMethod(env, jAddr, "address", nil)
if err != nil {
return nil, err
}
return &jniAddr{network, addr}, nil
}
//export Java_io_v_v23_syncbase_DatabaseImpl_nativeListenForInvites
func Java_io_v_v23_syncbase_DatabaseImpl_nativeListenForInvites(jenv *C.JNIEnv, jDatabase C.jobject, jContext C.jobject, jInviteHandler C.jobject) {
env := jutil.Env(uintptr(unsafe.Pointer(jenv)))
database := jutil.Object(uintptr(unsafe.Pointer(jDatabase)))
handler := jutil.Object(uintptr(unsafe.Pointer(jInviteHandler)))
ctx, _, err := jcontext.GoContext(env, jutil.Object(uintptr(unsafe.Pointer(jContext))))
if err != nil {
jutil.JThrowV(env, err)
return
}
jDbId, err := jutil.CallObjectMethod(env, database, "id", nil, idSign)
if err != nil {
jutil.JThrowV(env, err)
return
}
dbName, err := jutil.CallStringMethod(env, jDbId, "getName", nil)
if err != nil {
jutil.JThrowV(env, err)
return
}
dbBlessing, err := jutil.CallStringMethod(env, jDbId, "getBlessing", nil)
if err != nil {
jutil.JThrowV(env, err)
return
}
dbId := wire.Id{Name: dbName, Blessing: dbBlessing}
// Note: There is no need to use a buffered channel here. ListenForInvites
// spawns a goroutine for this listener that acts as an infinite buffer so we can
// process invites at our own pace.
ch := make(chan discovery.Invite)
if err := discovery.ListenForInvites(ctx, dbId, ch); err != nil {
jutil.JThrowV(env, err)
return
}
handler = jutil.NewGlobalRef(env, handler)
go func() {
for invite := range ch {
if err := handleInvite(invite, handler); err != nil {
// TODO(mattr): We should cancel the stream and return an error to
// the user here.
ctx.Errorf("couldn't call invite handler: %v", err)
}
}
env, free := jutil.GetEnv()
jutil.DeleteGlobalRef(env, handler)
free()
}()
}
func (d *driver) DebugString() string {
env, freeFunc := jutil.GetEnv()
defer freeFunc()
s, _ := jutil.CallStringMethod(env, d.jDriver, "debugString", nil)
return s
}
func (l *btListener) Addr() net.Addr {
env, freeFunc := jutil.GetEnv()
defer freeFunc()
addr, err := jutil.CallStringMethod(env, l.jListener, "address", nil)
if err != nil {
return &btAddr{""}
}
return &btAddr{addr}
}
func (l *bleListener) Addr() net.Addr {
env, freeFunc := jutil.GetEnv()
defer freeFunc()
addr, err := jutil.CallStringMethod(env, l.jListener, "address", nil)
if err != nil {
return bleAddr("")
}
return bleAddr(addr)
}
func (c *callImpl) callStringMethod(methodName string) string {
env, freeFunc := jutil.GetEnv()
defer freeFunc()
ret, err := jutil.CallStringMethod(env, c.jCall, methodName, nil)
if err != nil {
log.Printf("Couldn't call Java %q method: %v", methodName, err)
return ""
}
return ret
}
func (r *blessingStore) DebugString() string {
env, freeFunc := jutil.GetEnv()
defer freeFunc()
result, err := jutil.CallStringMethod(env, r.jBlessingStore, "debugString", nil)
if err != nil {
log.Printf("Couldn't call Java debugString: %v", err)
return ""
}
return result
}
func (r *blessingRoots) DebugString() string {
env, freeFunc := jutil.GetEnv()
defer freeFunc()
ret, err := jutil.CallStringMethod(env, r.jBlessingRoots, "debugString", nil)
if err != nil {
log.Printf("Couldn't get Java DebugString: %v", err)
return ""
}
return ret
}
// GoListenAddrs converts Java ListenSpec$Address array into a Go
// rpc.ListenAddrs value.
func GoListenAddrs(env jutil.Env, jAddrs jutil.Object) (rpc.ListenAddrs, error) {
addrarr, err := jutil.GoObjectArray(env, jAddrs)
if err != nil {
return nil, err
}
addrs := make(rpc.ListenAddrs, len(addrarr))
for i, jAddr := range addrarr {
var err error
addrs[i].Protocol, err = jutil.CallStringMethod(env, jAddr, "getProtocol", nil)
if err != nil {
return nil, err
}
addrs[i].Address, err = jutil.CallStringMethod(env, jAddr, "getAddress", nil)
if err != nil {
return nil, err
}
}
return addrs, nil
}
// newConnection creates a new Go connection. The passed-in Java Stream object
// is assumed to hold a global reference.
func newConnection(env jutil.Env, jStream jutil.Object) flow.Conn {
c := &btReadWriteCloser{jStream}
runtime.SetFinalizer(c, func(c *btReadWriteCloser) {
env, freeFunc := jutil.GetEnv()
defer freeFunc()
jutil.DeleteGlobalRef(env, c.jStream)
})
addrStr, _ := jutil.CallStringMethod(env, jStream, "localAddress", nil)
localAddr := &btAddr{addrStr}
return btConn{framer.New(c), localAddr}
}
// GoListenSpec converts the provided Java ListenSpec into a Go ListenSpec.
func GoListenSpec(env jutil.Env, jSpec jutil.Object) (rpc.ListenSpec, error) {
jAddrs, err := jutil.CallObjectMethod(env, jSpec, "getAddresses", nil, jutil.ArraySign(listenAddrSign))
if err != nil {
return rpc.ListenSpec{}, err
}
addrs, err := GoListenAddrs(env, jAddrs)
if err != nil {
return rpc.ListenSpec{}, err
}
proxy, err := jutil.CallStringMethod(env, jSpec, "getProxy", nil)
if err != nil {
return rpc.ListenSpec{}, err
}
jChooser, err := jutil.CallObjectMethod(env, jSpec, "getChooser", nil, addressChooserSign)
if err != nil {
return rpc.ListenSpec{}, err
}
chooser := GoAddressChooser(env, jChooser)
return rpc.ListenSpec{
Addrs: addrs,
Proxy: proxy,
AddressChooser: chooser,
}, nil
}
//export Java_io_v_impl_google_services_mounttable_MountTableServer_nativeWithNewServer
func Java_io_v_impl_google_services_mounttable_MountTableServer_nativeWithNewServer(jenv *C.JNIEnv, jMountTableServerClass C.jclass, jContext C.jobject, jMountTableServerParams C.jobject) C.jobject {
env := jutil.Env(uintptr(unsafe.Pointer(jenv)))
jCtx := jutil.Object(uintptr(unsafe.Pointer(jContext)))
jParams := jutil.Object(uintptr(unsafe.Pointer(jMountTableServerParams)))
// Read and translate all of the server params.
mountName, err := jutil.CallStringMethod(env, jParams, "getName", nil)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
rootDir, err := jutil.CallStringMethod(env, jParams, "getStorageRootDir", nil)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
permsJMap, err := jutil.CallMapMethod(env, jParams, "getPermissions", nil)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
permsMap := make(map[string]access.Permissions)
for jPath, jPerms := range permsJMap {
path := jutil.GoString(env, jPath)
perms, err := jaccess.GoPermissions(env, jPerms)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
permsMap[path] = perms
}
// Write JSON-encoded permissions to a file.
jsonPerms, err := json.Marshal(permsMap)
if err != nil {
jutil.JThrowV(env, fmt.Errorf("Couldn't JSON-encode path-permissions: %v", err))
return nil
}
permsFile, err := ioutil.TempFile(rootDir, "jni_permissions")
if err != nil {
jutil.JThrowV(env, fmt.Errorf("Couldn't create permissions file: %v", err))
return nil
}
w := bufio.NewWriter(permsFile)
if _, err := w.Write(jsonPerms); err != nil {
jutil.JThrowV(env, fmt.Errorf("Couldn't write to permissions file: %v", err))
return nil
}
if err := w.Flush(); err != nil {
jutil.JThrowV(env, fmt.Errorf("Couldn't flush to permissions file: %v", err))
}
statsPrefix, err := jutil.CallStringMethod(env, jParams, "getStatsPrefix", nil)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
// Start the mounttable server.
ctx, cancel, err := jcontext.GoContext(env, jCtx)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
d, err := mounttablelib.NewMountTableDispatcher(ctx, permsFile.Name(), rootDir, statsPrefix)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
newCtx, s, err := v23.WithNewDispatchingServer(ctx, mountName, d, options.ServesMountTable(true))
if err != nil {
jutil.JThrowV(env, err)
return nil
}
jNewCtx, err := jcontext.JavaContext(env, newCtx, cancel)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
jServer, err := jrpc.JavaServer(env, s)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
// Attach a server to the new context.
jServerAttCtx, err := jutil.CallStaticObjectMethod(env, jVRuntimeImplClass, "withServer", []jutil.Sign{contextSign, serverSign}, contextSign, jNewCtx, jServer)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
return C.jobject(unsafe.Pointer(jServerAttCtx))
}
//export Java_io_v_impl_google_services_syncbase_SyncbaseServer_nativeWithNewServer
func Java_io_v_impl_google_services_syncbase_SyncbaseServer_nativeWithNewServer(jenv *C.JNIEnv, jSyncbaseServerClass C.jclass, jContext C.jobject, jSyncbaseServerParams C.jobject) C.jobject {
env := jutil.Env(uintptr(unsafe.Pointer(jenv)))
jCtx := jutil.Object(uintptr(unsafe.Pointer(jContext)))
jParams := jutil.Object(uintptr(unsafe.Pointer(jSyncbaseServerParams)))
// Read and translate all of the server params.
jPerms, err := jutil.CallObjectMethod(env, jParams, "getPermissions", nil, permissionsSign)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
perms, err := jaccess.GoPermissions(env, jPerms)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
name, err := jutil.CallStringMethod(env, jParams, "getName", nil)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
rootDir, err := jutil.CallStringMethod(env, jParams, "getStorageRootDir", nil)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
if rootDir == "" {
rootDir = filepath.Join(os.TempDir(), "syncbaseserver")
if err := os.Mkdir(rootDir, 0755); err != nil && !os.IsExist(err) {
jutil.JThrowV(env, err)
return nil
}
}
jEngine, err := jutil.CallObjectMethod(env, jParams, "getStorageEngine", nil, storageEngineSign)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
engine, err := GoStorageEngine(env, jEngine)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
ctx, cancel, err := jcontext.GoContext(env, jCtx)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
// Create the rpc server before the service so that connections are shared between
// clients in the service and the rpc server. (i.e. connections are shared if the
// context returned from WithNewDispatchingServer is used for client calls).
d := dispatcher.NewDispatcherWrapper()
ctx, s, err := v23.WithNewDispatchingServer(ctx, name, d, options.ChannelTimeout(vsync.NeighborConnectionTimeout))
if err != nil {
cancel()
jutil.JThrowV(env, err)
return nil
}
service, err := server.NewService(ctx, server.ServiceOptions{
Perms: perms,
RootDir: rootDir,
Engine: engine,
})
if err != nil {
cancel()
jutil.JThrowV(env, err)
return nil
}
// Set the dispatcher in the dispatcher wrapper for the server to start responding
// to incoming rpcs.
d.SetDispatcher(server.NewDispatcher(service))
if err := service.AddNames(ctx, s); err != nil {
cancel()
jutil.JThrowV(env, err)
return nil
}
jNewCtx, err := jcontext.JavaContext(env, ctx, cancel)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
jServer, err := jrpc.JavaServer(env, s)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
// Attach a server to the new context.
jServerAttCtx, err := jutil.CallStaticObjectMethod(env, jVRuntimeImplClass, "withServer", []jutil.Sign{contextSign, serverSign}, contextSign, jNewCtx, jServer)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
return C.jobject(unsafe.Pointer(jServerAttCtx))
}
// GoStorageEngine converts the provided Java SyncbaseServer.StorageEngine
// enum object into a Go storage engine string.
func GoStorageEngine(env jutil.Env, jEngine jutil.Object) (string, error) {
if jEngine.IsNull() {
return "leveldb", nil
}
return jutil.CallStringMethod(env, jEngine, "getValue", []jutil.Sign{})
}
//export Java_io_v_impl_google_services_groups_GroupServer_nativeWithNewServer
func Java_io_v_impl_google_services_groups_GroupServer_nativeWithNewServer(jenv *C.JNIEnv, jGroupServerClass C.jclass, jContext C.jobject, jGroupServerParams C.jobject) C.jobject {
env := jutil.Env(uintptr(unsafe.Pointer(jenv)))
jCtx := jutil.Object(uintptr(unsafe.Pointer(jContext)))
jParams := jutil.Object(uintptr(unsafe.Pointer(jGroupServerParams)))
// Read and translate all of the server params.
name, err := jutil.CallStringMethod(env, jParams, "getName", nil)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
rootDir, err := jutil.CallStringMethod(env, jParams, "getStorageRootDir", nil)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
if rootDir == "" {
rootDir = filepath.Join(os.TempDir(), "groupserver")
if err := os.Mkdir(rootDir, 0755); err != nil && !os.IsExist(err) {
jutil.JThrowV(env, err)
return nil
}
}
jEngine, err := jutil.CallObjectMethod(env, jParams, "getStorageEngine", nil, storageEngineSign)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
engine, err := GoStorageEngine(env, jEngine)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
// Start the server.
ctx, cancel, err := jcontext.GoContext(env, jCtx)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
dispatcher, err := lib.NewGroupsDispatcher(rootDir, engine)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
newCtx, s, err := v23.WithNewDispatchingServer(ctx, name, dispatcher)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
jNewCtx, err := jcontext.JavaContext(env, newCtx, cancel)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
jServer, err := jrpc.JavaServer(env, s)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
// Attach a server to the new context.
jServerAttCtx, err := jutil.CallStaticObjectMethod(env, jVRuntimeImplClass, "withServer", []jutil.Sign{contextSign, serverSign}, contextSign, jNewCtx, jServer)
if err != nil {
jutil.JThrowV(env, err)
return nil
}
return C.jobject(unsafe.Pointer(jServerAttCtx))
}