path: root/rpc/api/db_args.go

// Copyright 2015 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.

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
}