/
app.go
220 lines (189 loc) · 5.85 KB
/
app.go
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package mock
import (
"context"
"encoding/json"
"errors"
"fmt"
"path/filepath"
abci "github.com/cometbft/cometbft/abci/types"
db "github.com/cosmos/cosmos-db"
"google.golang.org/grpc"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/reflect/protodesc"
"google.golang.org/protobuf/reflect/protoregistry"
"google.golang.org/protobuf/types/descriptorpb"
"cosmossdk.io/log"
storetypes "cosmossdk.io/store/types"
bam "github.com/cosmos/cosmos-sdk/baseapp"
"github.com/cosmos/cosmos-sdk/codec"
"github.com/cosmos/cosmos-sdk/codec/testutil"
servertypes "github.com/cosmos/cosmos-sdk/server/types"
sdk "github.com/cosmos/cosmos-sdk/types"
genutiltypes "github.com/cosmos/cosmos-sdk/x/genutil/types"
)
// NewApp creates a simple mock kvstore app for testing. It should work
// similar to a real app. Make sure rootDir is empty before running the test,
// in order to guarantee consistent results.
func NewApp(rootDir string, logger log.Logger) (servertypes.ABCI, error) {
db, err := db.NewGoLevelDB("mock", filepath.Join(rootDir, "data"), nil)
if err != nil {
return nil, err
}
capKeyMainStore := storetypes.NewKVStoreKey("main")
baseApp := bam.NewBaseApp("kvstore", logger, db, decodeTx)
baseApp.MountStores(capKeyMainStore)
baseApp.SetInitChainer(InitChainer(capKeyMainStore))
interfaceRegistry := testutil.CodecOptions{}.NewInterfaceRegistry()
interfaceRegistry.RegisterImplementations((*sdk.Msg)(nil), &KVStoreTx{})
baseApp.SetInterfaceRegistry(interfaceRegistry)
router := bam.NewMsgServiceRouter()
router.SetInterfaceRegistry(interfaceRegistry)
newDesc := &grpc.ServiceDesc{
ServiceName: "Test",
Methods: []grpc.MethodDesc{
{
MethodName: "Test",
Handler: MsgTestHandler,
},
},
}
router.RegisterService(newDesc, &MsgServerImpl{capKeyMainStore})
baseApp.SetMsgServiceRouter(router)
if err := baseApp.LoadLatestVersion(); err != nil {
return nil, err
}
return baseApp, nil
}
// KVStoreHandler is a simple handler that takes KVStoreTx and writes
// them to the db.
func KVStoreHandler(storeKey storetypes.StoreKey) bam.MsgServiceHandler {
return func(ctx sdk.Context, msg sdk.Msg) (*sdk.Result, error) {
dTx, ok := msg.(*KVStoreTx)
if !ok {
return nil, errors.New("KVStoreHandler should only receive KVStoreTx")
}
key := dTx.key
value := dTx.value
store := ctx.KVStore(storeKey)
store.Set(key, value)
return &sdk.Result{
Log: fmt.Sprintf("set %s=%s", key, value),
}, nil
}
}
// basic KV structure
type KV struct {
Key string `json:"key"`
Value string `json:"value"`
}
// What Genesis JSON is formatted as
type GenesisJSON struct {
Values []KV `json:"values"`
}
// InitChainer returns a function that can initialize the chain
// with key/value pairs
func InitChainer(key storetypes.StoreKey) func(sdk.Context, *abci.RequestInitChain) (*abci.ResponseInitChain, error) {
return func(ctx sdk.Context, req *abci.RequestInitChain) (*abci.ResponseInitChain, error) {
stateJSON := req.AppStateBytes
genesisState := new(GenesisJSON)
err := json.Unmarshal(stateJSON, genesisState)
if err != nil {
return &abci.ResponseInitChain{}, err
}
for _, val := range genesisState.Values {
store := ctx.KVStore(key)
store.Set([]byte(val.Key), []byte(val.Value))
}
return &abci.ResponseInitChain{}, nil
}
}
// AppGenState can be passed into InitCmd, returns a static string of a few
// key-values that can be parsed by InitChainer
func AppGenState(_ *codec.LegacyAmino, _ genutiltypes.AppGenesis, _ []json.RawMessage) (appState json.RawMessage, err error) {
appState = json.RawMessage(`{
"values": [
{
"key": "hello",
"value": "goodbye"
},
{
"key": "foo",
"value": "bar"
}
]
}`)
return
}
// AppGenStateEmpty returns an empty transaction state for mocking.
func AppGenStateEmpty(_ *codec.LegacyAmino, _ genutiltypes.AppGenesis, _ []json.RawMessage) (appState json.RawMessage, err error) {
appState = json.RawMessage(``)
return
}
// Manually write the handlers for this custom message
type MsgServer interface {
Test(ctx context.Context, msg *KVStoreTx) (*sdk.Result, error)
}
type MsgServerImpl struct {
capKeyMainStore *storetypes.KVStoreKey
}
func MsgTestHandler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) { // nolint: revive // refactor this in a followup pr
in := new(KVStoreTx)
if err := dec(in); err != nil {
return nil, err
}
if interceptor == nil {
return srv.(MsgServer).Test(ctx, in)
}
info := &grpc.UnaryServerInfo{
Server: srv,
FullMethod: "/KVStoreTx",
}
handler := func(ctx context.Context, req interface{}) (interface{}, error) {
return srv.(MsgServer).Test(ctx, req.(*KVStoreTx))
}
return interceptor(ctx, in, info, handler)
}
func (m MsgServerImpl) Test(ctx context.Context, msg *KVStoreTx) (*sdk.Result, error) {
return KVStoreHandler(m.capKeyMainStore)(sdk.UnwrapSDKContext(ctx), msg)
}
func init() {
err := registerFauxDescriptor()
if err != nil {
panic(err)
}
}
func registerFauxDescriptor() error {
fauxDescriptor, err := protodesc.NewFile(&descriptorpb.FileDescriptorProto{
Name: proto.String("faux_proto/test.proto"),
Dependency: nil,
PublicDependency: nil,
WeakDependency: nil,
MessageType: []*descriptorpb.DescriptorProto{
{
Name: proto.String("KVStoreTx"),
},
},
EnumType: nil,
Service: []*descriptorpb.ServiceDescriptorProto{
{
Name: proto.String("Test"),
Method: []*descriptorpb.MethodDescriptorProto{
{
Name: proto.String("Test"),
InputType: proto.String("KVStoreTx"),
OutputType: proto.String("KVStoreTx"),
},
},
},
},
Extension: nil,
Options: nil,
SourceCodeInfo: nil,
Syntax: nil,
Edition: nil,
}, nil)
if err != nil {
return err
}
return protoregistry.GlobalFiles.RegisterFile(fauxDescriptor)
}