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added DB api

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This commit is contained in:
Bas van Kervel 2015-06-16 14:59:39 +02:00
parent 5c25403b13
commit c3f6c322c0
6 changed files with 295 additions and 5 deletions
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6
rpc/api/admin.go
View File

@ -222,10 +222,10 @@ func (self *adminApi) ChainSyncStatus(req *shared.Request) (interface{}, error)
pending, cached, importing, estimate := self.ethereum.Downloader().Stats()
return map[string]interface{}{
"blocksAvailable": pending,
"blocksAvailable": pending,
"blocksWaitingForImport": cached,
"importing": importing,
"estimate": estimate.String(),
"importing": importing,
"estimate": estimate.String(),
}, nil
}

5
rpc/api/api.go
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@ -9,6 +9,7 @@ import (
const (
AdminApiName = "admin"
EthApiName = "eth"
DbApiName = "db"
DebugApiName = "debug"
MergedApiName = "merged"
MinerApiName = "miner"
@ -21,12 +22,12 @@ const (
var (
DefaultHttpRpcApis = strings.Join([]string{
EthApiName, NetApiName, Web3ApiName,
DbApiName, EthApiName, NetApiName, Web3ApiName,
}, ",")
// List with all API's which are offered over the IPC interface by default
DefaultIpcApis = strings.Join([]string{
AdminApiName, EthApiName, DebugApiName, MinerApiName, NetApiName,
AdminApiName, DbApiName, EthApiName, DebugApiName, MinerApiName, NetApiName,
ShhApiName, TxPoolApiName, PersonalApiName, Web3ApiName,
}, ",")
)

128
rpc/api/db.go Normal file
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@ -0,0 +1,128 @@
package api
import (
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/rpc/codec"
"github.com/ethereum/go-ethereum/rpc/shared"
"github.com/ethereum/go-ethereum/xeth"
)
const (
DbApiversion = "1.0"
)
var (
// mapping between methods and handlers
DbMapping = map[string]dbhandler{
"db_getString": (*dbApi).GetString,
"db_putString": (*dbApi).PutString,
"db_getHex": (*dbApi).GetHex,
"db_putHex": (*dbApi).PutHex,
}
)
// db callback handler
type dbhandler func(*dbApi, *shared.Request) (interface{}, error)
// db api provider
type dbApi struct {
xeth *xeth.XEth
ethereum *eth.Ethereum
methods map[string]dbhandler
codec codec.ApiCoder
}
// create a new db api instance
func NewDbApi(xeth *xeth.XEth, ethereum *eth.Ethereum, coder codec.Codec) *dbApi {
return &dbApi{
xeth: xeth,
ethereum: ethereum,
methods: DbMapping,
codec: coder.New(nil),
}
}
// collection with supported methods
func (self *dbApi) Methods() []string {
methods := make([]string, len(self.methods))
i := 0
for k := range self.methods {
methods[i] = k
i++
}
return methods
}
// Execute given request
func (self *dbApi) Execute(req *shared.Request) (interface{}, error) {
if callback, ok := self.methods[req.Method]; ok {
return callback(self, req)
}
return nil, &shared.NotImplementedError{req.Method}
}
func (self *dbApi) Name() string {
return DbApiName
}
func (self *dbApi) ApiVersion() string {
return DbApiversion
}
func (self *dbApi) GetString(req *shared.Request) (interface{}, error) {
args := new(DbArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
if err := args.requirements(); err != nil {
return nil, err
}
ret, err := self.xeth.DbGet([]byte(args.Database + args.Key))
return string(ret), err
}
func (self *dbApi) PutString(req *shared.Request) (interface{}, error) {
args := new(DbArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
if err := args.requirements(); err != nil {
return nil, err
}
return self.xeth.DbPut([]byte(args.Database+args.Key), args.Value), nil
}
func (self *dbApi) GetHex(req *shared.Request) (interface{}, error) {
args := new(DbHexArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
if err := args.requirements(); err != nil {
return nil, err
}
if res, err := self.xeth.DbGet([]byte(args.Database + args.Key)); err == nil {
return newHexData(res), nil
} else {
return nil, err
}
}
func (self *dbApi) PutHex(req *shared.Request) (interface{}, error) {
args := new(DbHexArgs)
if err := self.codec.Decode(req.Params, &args); err != nil {
return nil, shared.NewDecodeParamError(err.Error())
}
if err := args.requirements(); err != nil {
return nil, err
}
return self.xeth.DbPut([]byte(args.Database+args.Key), args.Value), nil
}

110
rpc/api/db_args.go Normal file
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@ -0,0 +1,110 @@
package api
import (
"encoding/json"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/rpc/shared"
)
type DbArgs struct {
Database string
Key string
Value []byte
}
func (args *DbArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 2 {
return shared.NewInsufficientParamsError(len(obj), 2)
}
var objstr string
var ok bool
if objstr, ok = obj[0].(string); !ok {
return shared.NewInvalidTypeError("database", "not a string")
}
args.Database = objstr
if objstr, ok = obj[1].(string); !ok {
return shared.NewInvalidTypeError("key", "not a string")
}
args.Key = objstr
if len(obj) > 2 {
objstr, ok = obj[2].(string)
if !ok {
return shared.NewInvalidTypeError("value", "not a string")
}
args.Value = []byte(objstr)
}
return nil
}
func (a *DbArgs) requirements() error {
if len(a.Database) == 0 {
return shared.NewValidationError("Database", "cannot be blank")
}
if len(a.Key) == 0 {
return shared.NewValidationError("Key", "cannot be blank")
}
return nil
}
type DbHexArgs struct {
Database string
Key string
Value []byte
}
func (args *DbHexArgs) UnmarshalJSON(b []byte) (err error) {
var obj []interface{}
if err := json.Unmarshal(b, &obj); err != nil {
return shared.NewDecodeParamError(err.Error())
}
if len(obj) < 2 {
return shared.NewInsufficientParamsError(len(obj), 2)
}
var objstr string
var ok bool
if objstr, ok = obj[0].(string); !ok {
return shared.NewInvalidTypeError("database", "not a string")
}
args.Database = objstr
if objstr, ok = obj[1].(string); !ok {
return shared.NewInvalidTypeError("key", "not a string")
}
args.Key = objstr
if len(obj) > 2 {
objstr, ok = obj[2].(string)
if !ok {
return shared.NewInvalidTypeError("value", "not a string")
}
args.Value = common.FromHex(objstr)
}
return nil
}
func (a *DbHexArgs) requirements() error {
if len(a.Database) == 0 {
return shared.NewValidationError("Database", "cannot be blank")
}
if len(a.Key) == 0 {
return shared.NewValidationError("Key", "cannot be blank")
}
return nil
}

41
rpc/api/db_js.go Normal file
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@ -0,0 +1,41 @@
package api
const Db_JS = `
web3._extend({
property: 'db',
methods:
[
new web3._extend.Method({
name: 'getString',
call: 'db_getString',
params: 2,
inputFormatter: [web3._extend.formatters.formatInputString, web3._extend.formatters.formatInputString],
outputFormatter: web3._extend.formatters.formatOutputString
}),
new web3._extend.Method({
name: 'putString',
call: 'db_putString',
params: 3,
inputFormatter: [web3._extend.formatters.formatInputString, web3._extend.formatters.formatInputString, web3._extend.formatters.formatInputString],
outputFormatter: web3._extend.formatters.formatOutputBool
}),
new web3._extend.Method({
name: 'getHex',
call: 'db_getHex',
params: 2,
inputFormatter: [web3._extend.formatters.formatInputString, web3._extend.formatters.formatInputString],
outputFormatter: web3._extend.formatters.formatOutputString
}),
new web3._extend.Method({
name: 'putHex',
call: 'db_putHex',
params: 3,
inputFormatter: [web3._extend.formatters.formatInputString, web3._extend.formatters.formatInputString, web3._extend.formatters.formatInputString],
outputFormatter: web3._extend.formatters.formatOutputBool
}),
],
properties:
[
]
});
`

10
rpc/api/utils.go
View File

@ -24,6 +24,12 @@ var (
"setSolc",
"datadir",
},
"db": []string{
"getString",
"putString",
"getHex",
"putHex",
},
"debug": []string{
"dumpBlock",
"getBlockRlp",
@ -137,6 +143,8 @@ func ParseApiString(apistr string, codec codec.Codec, xeth *xeth.XEth, eth *eth.
apis[i] = NewAdminApi(xeth, eth, codec)
case DebugApiName:
apis[i] = NewDebugApi(xeth, eth, codec)
case DbApiName:
apis[i] = NewDbApi(xeth, eth, codec)
case EthApiName:
apis[i] = NewEthApi(xeth, codec)
case MinerApiName:
@ -165,6 +173,8 @@ func Javascript(name string) string {
return Admin_JS
case DebugApiName:
return Debug_JS
case DbApiName:
return Db_JS
case MinerApiName:
return Miner_JS
case NetApiName: