tendermint

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Commit Graph

Author	SHA1	Message	Date
Christopher Goes	bf16d6453c	Address PR comments	7 years ago
Emmanuel T Odeke	11bee6194a	DB as a service Fixes https://github.com/tendermint/tendermint/issues/1162 Databases as a service! Can now access Databases as a remote service via gRPC for performance and easy deployment. The caveat is that each service is stateful in regards to the DB i.e. each unique service uses only one unique DB but nonetheless multiple clients can access it. A full standalone example ```go package main import ( "bytes" "context" "log" grpcdb "github.com/tendermint/tmlibs/grpcdb" protodb "github.com/tendermint/tmlibs/proto" ) func main() { addr := ":8998" go func() { if err := grpcdb.BindRemoteDBServer(addr); err != nil { log.Fatalf("BindRemoteDBServer: %v", err) } }() client, err := grpcdb.NewClient(addr, false) if err != nil { log.Fatalf("Failed to create grpcDB client: %v", err) } ctx := context.Background() // 1. Initialize the DB in := &protodb.Init{ Type: "leveldb", Name: "grpc-uno-test", Dir: ".", } if _, err := client.Init(ctx, in); err != nil { log.Fatalf("Init error: %v", err) } // 2. Now it can be used! query1 := &protodb.Entity{Key: []byte("Project"), Value: []byte("Tmlibs-on-gRPC")} if _, err := client.SetSync(ctx, query1); err != nil { log.Fatalf("SetSync err: %v", err) } query2 := &protodb.Entity{Key: []byte("Project")} read, err := client.Get(ctx, query2) if err != nil { log.Fatalf("Get err: %v", err) } if g, w := read.Value, []byte("Tmlibs-on-gRPC"); !bytes.Equal(g, w) { log.Fatalf("got= (%q ==> % X)\nwant=(%q ==> % X)", g, g, w, w) } } ```	7 years ago

Author

SHA1

Message

Date

Christopher Goes

bf16d6453c

Address PR comments

7 years ago

Emmanuel T Odeke

11bee6194a

DB as a service

Fixes https://github.com/tendermint/tendermint/issues/1162

Databases as a service!

Can now access Databases as a remote service
via gRPC for performance and easy deployment.

The caveat is that each service is stateful in regards to
the DB i.e. each unique service uses only one unique DB
but nonetheless multiple clients can access it.

A full standalone example

```go
package main

import (
  "bytes"
  "context"
  "log"

  grpcdb "github.com/tendermint/tmlibs/grpcdb"
  protodb "github.com/tendermint/tmlibs/proto"
)

func main() {
  addr := ":8998"
  go func() {
    if err := grpcdb.BindRemoteDBServer(addr); err != nil {
      log.Fatalf("BindRemoteDBServer: %v", err)
    }
  }()

  client, err := grpcdb.NewClient(addr, false)
  if err != nil {
    log.Fatalf("Failed to create grpcDB client: %v", err)
  }

  ctx := context.Background()
  // 1. Initialize the DB
  in := &protodb.Init{
    Type: "leveldb",
    Name: "grpc-uno-test",
    Dir:  ".",
  }
  if _, err := client.Init(ctx, in); err != nil {
    log.Fatalf("Init error: %v", err)
  }

  // 2. Now it can be used!
  query1 := &protodb.Entity{Key: []byte("Project"), Value:
[]byte("Tmlibs-on-gRPC")}
  if _, err := client.SetSync(ctx, query1); err != nil {
    log.Fatalf("SetSync err: %v", err)
  }

  query2 := &protodb.Entity{Key: []byte("Project")}
  read, err := client.Get(ctx, query2)
  if err != nil {
    log.Fatalf("Get err: %v", err)
  }
  if g, w := read.Value, []byte("Tmlibs-on-gRPC"); !bytes.Equal(g, w) {
    log.Fatalf("got= (%q ==> % X)\nwant=(%q ==> % X)", g, g, w, w)
  }
}
```

7 years ago

2 Commits (55f4ccd4fcdc0359ea70c2c7978313c6a3a17d78)