steem-block-db/steemapi.go

package main

import "encoding/json"
import log "github.com/sirupsen/logrus"

type SteemAPI struct {
	url string
	rpc *JSONRPC
}

var EmptyParams = []string{}
var EmptyParamsRaw, _ = json.Marshal(EmptyParams)

func NewSteemAPI(url string, options ...func(s *SteemAPI)) *SteemAPI {

	rpc := NewJSONRPC(url, func(x *JSONRPC) {})

	self := &SteemAPI{
		rpc: rpc,
	}

	for _, option := range options {
		option(self)
	}

	return self
}

func (self *SteemAPI) GetDynamicGlobalProperties() (GetDynamicGlobalPropertiesResponse, error) {

	var resp DynamicGlobalProperties

	raw, err := self.rpc.Call("get_dynamic_global_properties", EmptyParamsRaw)

	if err != nil {
		return nil, err
	}

	json.Unmarshal(raw, &resp)

	return &resp, nil
}

func (self *SteemAPI) GetOpsInBlock(blockNum BlockNumber) (GetOpsInBlockResponse, error) {

	// first fetch virtual ops
	vOpsParams := &GetOpsInBlockRequestParams{BlockNum: blockNum, VirtualOps: true}
	vop, err := vOpsParams.MarshalJSON()
	vOpsResponse, err := self.rpc.Call("condenser_api.get_ops_in_block", vop)
	if err != nil {
		return nil, err
	}

	var result []OperationObject
	err = json.Unmarshal(vOpsResponse, &result)
	if err != nil {
		return nil, err
	}

	// result is now populated with vops, now get real ops
	realOpsParams := &GetOpsInBlockRequestParams{BlockNum: blockNum, VirtualOps: false}
	rop, err := realOpsParams.MarshalJSON()
	realOpsResponse, err := self.rpc.Call("condenser_api.get_ops_in_block", rop)
	var secondResult []OperationObject

	err = json.Unmarshal(realOpsResponse, &secondResult)
	if err != nil {
		return nil, err
	}
	result = append(result, secondResult...)
	return &result, nil
}