github.com/turingchain2020/turingchain@v1.1.21/system/dapp/manage/executor/query.go (about)

     1  // Copyright Turing Corp. 2018 All Rights Reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package executor
     6  
     7  import (
     8  	"fmt"
     9  
    10  	"github.com/turingchain2020/turingchain/types"
    11  )
    12  
    13  // Query_GetConfigItem get config item
    14  func (c *Manage) Query_GetConfigItem(in *types.ReqString) (types.Message, error) {
    15  	// Load config from state db
    16  	value, err := c.GetStateDB().Get([]byte(types.ManageKey(in.Data)))
    17  	if err != nil {
    18  		clog.Info("modifyConfig", "get db key", "not found")
    19  		value = nil
    20  	}
    21  	if value == nil {
    22  		value, err = c.GetStateDB().Get([]byte(types.ConfigKey(in.Data)))
    23  		if err != nil {
    24  			clog.Info("modifyConfig", "get db key", "not found")
    25  			value = nil
    26  		}
    27  	}
    28  
    29  	var reply types.ReplyConfig
    30  	reply.Key = in.Data
    31  
    32  	var item types.ConfigItem
    33  	if value != nil {
    34  		err = types.Decode(value, &item)
    35  		if err != nil {
    36  			clog.Error("modifyConfig", "get db key", in.Data)
    37  			return nil, err // types.ErrBadConfigValue
    38  		}
    39  		reply.Value = fmt.Sprint(item.GetArr().Value)
    40  	} else { // if config item not exist
    41  		reply.Value = ""
    42  	}
    43  	clog.Info("manage  Query", "key ", in.Data)
    44  
    45  	return &reply, nil
    46  }