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package rpctest
import (
"context"
"fmt"
"os"
"time"
abciclient "github.com/tendermint/tendermint/abci/client"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/config"
"github.com/tendermint/tendermint/libs/log"
tmnet "github.com/tendermint/tendermint/libs/net"
"github.com/tendermint/tendermint/libs/service"
"github.com/tendermint/tendermint/node"
"github.com/tendermint/tendermint/rpc/coretypes"
rpcclient "github.com/tendermint/tendermint/rpc/jsonrpc/client"
)
// Options helps with specifying some parameters for our RPC testing for greater
// control.
type Options struct {
suppressStdout bool
}
// waitForRPC connects to the RPC service and blocks until a /status call succeeds.
func waitForRPC(ctx context.Context, conf *config.Config) {
laddr := conf.RPC.ListenAddress
client, err := rpcclient.New(laddr)
if err != nil {
panic(err)
}
result := new(coretypes.ResultStatus)
for {
_, err := client.Call(ctx, "status", map[string]interface{}{}, result)
if err == nil {
return
}
fmt.Println("error", err)
time.Sleep(time.Millisecond)
}
}
func randPort() int {
port, err := tmnet.GetFreePort()
if err != nil {
panic(err)
}
return port
}
// makeAddrs constructs local listener addresses for node services. This
// implementation uses random ports so test instances can run concurrently.
func makeAddrs() (p2pAddr, rpcAddr string) {
const addrTemplate = "tcp://127.0.0.1:%d"
return fmt.Sprintf(addrTemplate, randPort()), fmt.Sprintf(addrTemplate, randPort())
}
func CreateConfig(testName string) (*config.Config, error) {
c, err := config.ResetTestRoot(testName)
if err != nil {
return nil, err
}
p2pAddr, rpcAddr := makeAddrs()
c.P2P.ListenAddress = p2pAddr
c.RPC.ListenAddress = rpcAddr
c.Consensus.WalPath = "rpc-test"
c.RPC.CORSAllowedOrigins = []string{"https://tendermint.com/"}
return c, nil
}
type ServiceCloser func(context.Context) error
func StartTendermint(
ctx context.Context,
conf *config.Config,
app abci.Application,
opts ...func(*Options),
) (service.Service, ServiceCloser, error) {
ctx, cancel := context.WithCancel(ctx)
nodeOpts := &Options{}
for _, opt := range opts {
opt(nodeOpts)
}
var logger log.Logger
if nodeOpts.suppressStdout {
logger = log.NewNopLogger()
} else {
logger = log.MustNewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo, false)
}
papp := abciclient.NewLocalCreator(app)
tmNode, err := node.New(ctx, conf, logger, papp, nil)
if err != nil {
return nil, func(_ context.Context) error { cancel(); return nil }, err
}
err = tmNode.Start(ctx)
if err != nil {
return nil, func(_ context.Context) error { cancel(); return nil }, err
}
waitForRPC(ctx, conf)
if !nodeOpts.suppressStdout {
fmt.Println("Tendermint running!")
}
return tmNode, func(ctx context.Context) error {
cancel()
tmNode.Wait()
os.RemoveAll(conf.RootDir)
return nil
}, nil
}
// SuppressStdout is an option that tries to make sure the RPC test Tendermint
// node doesn't log anything to stdout.
func SuppressStdout(o *Options) {
o.suppressStdout = true
}