mirrors/tendermint
1
0
Fork 0
mirror of https://github.com/tendermint/tendermint.git synced 2026-02-11 06:11:07 +00:00
Code Issues Packages Projects Releases Wiki Activity

fixups from retrying

Browse Source
This commit is contained in:
William Banfield
2022-01-07 14:16:42 -05:00
parent f629b61821
commit 3c3089f834
1 changed files with 36 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
docs/tutorials/go-built-in.md
View File

@@ -163,7 +163,7 @@ Badger is a fast embedded key-value store.
First, add Badger as a dependency of your go module using the `go get` command:
`go get github.com/dgraph-io/badger@v2103.2`
`go get github.com/dgraph-io/badger/v3`
Next, let's update the application and its constructor to receive a handle to the
database.
@@ -188,6 +188,15 @@ func NewKVStoreApplication(db *badger.DB) *KVStoreApplication {
The `pendingBlock` keeps track of the transactions that will update the application's
state when a block is completed. Don't worry about it for now, we'll get to that later.
Finally, update the `import` stanza at the top to include the `Badger` library:
```go
import(
"github.com/dgraph-io/badger/v3"
abcitypes "github.com/tendermint/tendermint/abci/types"
)
```
### 1.3.1 CheckTx
When Tendermint Core receives a new transaction, Tendermint asks the application
@@ -234,10 +243,11 @@ Finally, make sure to add the `bytes` package to the your import stanza
at the top of `app.go`:
```go
import (
"bytes"
import(
"bytes"
abcitypes "github.com/tendermint/tendermint/abci/types"
"github.com/dgraph-io/badger/v3"
abcitypes "github.com/tendermint/tendermint/abci/types"
)
```
@@ -284,7 +294,7 @@ func (app *KVStoreApplication) DeliverTx(req abcitypes.RequestDeliverTx) abcityp
key, value := parts[0], parts[1]
if err := app.pendingBlock.Set(key, value); err != nil {
log.Panicf("Error reading database, unable to verify tx: %v", dbErr)
log.Panicf("Error reading database, unable to verify tx: %v", err)
}
return abcitypes.ResponseDeliverTx{Code: 0}
@@ -315,7 +325,19 @@ func (app *KVStoreApplication) Commit() abcitypes.ResponseCommit {
}
```
You may also have noticed that the application we are writing will _crash_ if it receives an
Finally, make sure to add the `log` library to the `import` stanza as well:
```go
import (
"bytes"
"log"
"github.com/dgraph-io/badger/v3"
abcitypes "github.com/tendermint/tendermint/abci/types"
)
```
You may have noticed that the application we are writing will _crash_ if it receives an
unexpected error from the database during the `DeliverTx` or `Commit` methods.
This is not an accident. If the application received an error from the database,
there is no deterministic way for it to make progress so the only safe option is to terminate.
@@ -361,7 +383,7 @@ applications in production but are not required for getting a very simple applic
up and running.
To better understand these methods and why they are useful, check out the Tendermint
[specification on ABCI](https://github.com/tendermint/spec/tree/20b2abb5f9a83c2d9d97b53e555e4ea5a6bd7dc4/spec/abci)
[specification on ABCI](https://github.com/tendermint/spec/tree/20b2abb5f9a83c2d9d97b53e555e4ea5a6bd7dc4/spec/abci).
## 1.4 Starting an application and a Tendermint Core instance in the same process
@@ -376,15 +398,17 @@ package main
import (
"flag"
"fmt"
"log"
"os"
"os/signal"
"path/filepath"
"syscall"
"github.com/dgraph-io/badger"
"github.com/dgraph-io/badger/v3"
"github.com/spf13/viper"
abciclient "github.com/tendermint/tendermint/abci/client"
cfg "github.com/tendermint/tendermint/config"
"github.com/tendermint/tendermint/libs/log"
tmlog "github.com/tendermint/tendermint/libs/log"
nm "github.com/tendermint/tendermint/node"
"github.com/tendermint/tendermint/types"
)
@@ -420,7 +444,7 @@ func main() {
}
dbPath := filepath.Join(homeDir, "badger")
db, err := badger.Open(badger.DefaultOptions(dbPath).WithTruncate(true))
db, err := badger.Open(badger.DefaultOptions(dbPath))
if err != nil {
log.Fatalf("Opening database: %v", err)
}
@@ -432,7 +456,7 @@ func main() {
app := NewKVStoreApplication(db)
acc := abciclient.NewLocalCreator(app)
logger := log.MustNewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo, false)
logger := tmlog.MustNewDefaultLogger(tmlog.LogFormatPlain, tmlog.LogLevelInfo, false)
node, err := nm.New(config, logger, acc, gf)
if err != nil {
log.Fatalf("Creating node: %v", err)
@@ -499,7 +523,7 @@ Next, we create a database handle and use it to construct our ABCI application:
Then we construct a logger:
```go
...
logger := log.MustNewDefaultLogger(log.LogFormatPlain, log.LogLevelInfo, false)
logger := tmlog.MustNewDefaultLogger(tmlog.LogFormatPlain, tmlog.LogLevelInfo, false)
...
```