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data.go
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data.go
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package goserver
import (
"context"
"fmt"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
dspb "github.com/brotherlogic/datastore/proto"
dpb "github.com/brotherlogic/dstore/proto"
kspb "github.com/brotherlogic/keystore/proto"
"github.com/golang/protobuf/proto"
google_protobuf "github.com/golang/protobuf/ptypes/any"
)
//NewMemoryStore build a memory store for testing
func (s *GoServer) NewMemoryStore() translatedStore {
return &mts{store: &memstore{mem: make(map[string]*google_protobuf.Any)}}
}
//NewFailMemoryStore fails
func (s *GoServer) NewFailMemoryStore() translatedStore {
return &fts{}
}
type translatedStore interface {
Load(ctx context.Context, key string, message proto.Message) error
Save(ctx context.Context, key string, message proto.Message) error
}
type fts struct{}
func (fts *fts) Load(ctx context.Context, key string, message proto.Message) error {
return fmt.Errorf("Built to fail")
}
func (fts *fts) Save(ctx context.Context, key string, message proto.Message) error {
return fmt.Errorf("Built to fail")
}
type mts struct {
store byteStore
}
func (mts *mts) Load(ctx context.Context, key string, message proto.Message) error {
data, err := mts.store.load(ctx, key)
if err != nil {
return err
}
return proto.Unmarshal(data.GetValue(), message)
}
func (mts *mts) Save(ctx context.Context, key string, message proto.Message) error {
bytes, err := proto.Marshal(message)
if err != nil {
return err
}
return mts.store.save(ctx, key, &google_protobuf.Any{Value: bytes})
}
type byteStore interface {
load(ctx context.Context, key string) (*google_protobuf.Any, error)
save(ctx context.Context, key string, data *google_protobuf.Any) error
}
type memstore struct {
mem map[string]*google_protobuf.Any
}
func (m *memstore) load(ctx context.Context, key string) (*google_protobuf.Any, error) {
if val, ok := m.mem[key]; ok {
return val, nil
}
return nil, status.Errorf(codes.InvalidArgument, "Not found")
}
func (m *memstore) save(ctx context.Context, key string, data *google_protobuf.Any) error {
m.mem[key] = data
return nil
}
type keystore struct {
dial func(ctx context.Context, server string) (*grpc.ClientConn, error)
}
func (k *keystore) load(ctx context.Context, key string) (*google_protobuf.Any, error) {
conn, err := k.dial(ctx, "keystore")
if err != nil {
return nil, err
}
defer conn.Close()
store := kspb.NewKeyStoreServiceClient(conn)
resp, err := store.Read(ctx, &kspb.ReadRequest{Key: key})
if err != nil {
return nil, err
}
return resp.GetPayload(), err
}
func (k *keystore) save(ctx context.Context, key string, value *google_protobuf.Any) error {
conn, err := k.dial(ctx, "keystore")
if err != nil {
return err
}
defer conn.Close()
store := dspb.NewDatastoreServiceClient(conn)
_, err = store.Write(ctx, &dspb.WriteRequest{Key: key, Value: value})
return err
}
type datastore struct {
dial func(ctx context.Context, server string) (*grpc.ClientConn, error)
}
func (d *datastore) load(ctx context.Context, key string) (*google_protobuf.Any, error) {
conn, err := d.dial(ctx, "datastore")
if err != nil {
return nil, err
}
defer conn.Close()
store := dspb.NewDatastoreServiceClient(conn)
resp, err := store.Read(ctx, &dspb.ReadRequest{Key: key})
if err != nil {
return nil, err
}
return resp.GetValue(), err
}
func (d *datastore) save(ctx context.Context, key string, value *google_protobuf.Any) error {
conn, err := d.dial(ctx, "datastore")
if err != nil {
return err
}
defer conn.Close()
store := dspb.NewDatastoreServiceClient(conn)
_, err = store.Write(ctx, &dspb.WriteRequest{Key: key, Value: value})
return err
}
type dstore struct {
dial func(ctx context.Context, server string) (*grpc.ClientConn, error)
}
func (d *dstore) load(ctx context.Context, key string) (*google_protobuf.Any, error) {
conn, err := d.dial(ctx, "dstore")
if err != nil {
return nil, err
}
defer conn.Close()
store := dpb.NewDStoreServiceClient(conn)
resp, err := store.Read(ctx, &dpb.ReadRequest{Key: key})
if err != nil {
return nil, err
}
if resp.GetConsensus() < 0.5 {
return nil, fmt.Errorf("Unable to get read consensus: %v", resp.GetConsensus())
}
return resp.GetValue(), err
}
func (d *dstore) save(ctx context.Context, key string, value *google_protobuf.Any) error {
conn, err := d.dial(ctx, "dstore")
if err != nil {
return err
}
defer conn.Close()
store := dpb.NewDStoreServiceClient(conn)
r, err := store.Write(ctx, &dpb.WriteRequest{Key: key, Value: value})
if r.GetConsensus() < 0.5 {
return fmt.Errorf("Unable to get write consensus: %v", r.GetConsensus())
}
return err
}