From 40c4d625c6f705ecc8d03da662b498ea9fb92032 Mon Sep 17 00:00:00 2001
From: Delweng Zheng <zwb@caicloud.io>
Date: Thu, 14 Jun 2018 23:13:50 +0800
Subject: [PATCH] ethclient: golint of error variable name

---
 ethclient/ethclient.go | 12 ++++++------
 interfaces.go          |  4 ++--
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/ethclient/ethclient.go b/ethclient/ethclient.go
index b40837c8cc..abb1cbee97 100644
--- a/ethclient/ethclient.go
+++ b/ethclient/ethclient.go
@@ -90,7 +90,7 @@ func (ec *Client) getBlock(ctx context.Context, method string, args ...interface
 	if err != nil {
 		return nil, err
 	} else if len(raw) == 0 {
-		return nil, ethereum.NotFound
+		return nil, ethereum.ErrNotFound
 	}
 	// Decode header and transactions.
 	var head *types.Header
@@ -154,7 +154,7 @@ func (ec *Client) HeaderByHash(ctx context.Context, hash common.Hash) (*types.He
 	var head *types.Header
 	err := ec.c.CallContext(ctx, &head, "eth_getBlockByHash", hash, false)
 	if err == nil && head == nil {
-		err = ethereum.NotFound
+		err = ethereum.ErrNotFound
 	}
 	return head, err
 }
@@ -165,7 +165,7 @@ func (ec *Client) HeaderByNumber(ctx context.Context, number *big.Int) (*types.H
 	var head *types.Header
 	err := ec.c.CallContext(ctx, &head, "eth_getBlockByNumber", toBlockNumArg(number), false)
 	if err == nil && head == nil {
-		err = ethereum.NotFound
+		err = ethereum.ErrNotFound
 	}
 	return head, err
 }
@@ -195,7 +195,7 @@ func (ec *Client) TransactionByHash(ctx context.Context, hash common.Hash) (tx *
 	if err != nil {
 		return nil, false, err
 	} else if json == nil {
-		return nil, false, ethereum.NotFound
+		return nil, false, ethereum.ErrNotFound
 	} else if _, r, _ := json.tx.RawSignatureValues(); r == nil {
 		return nil, false, fmt.Errorf("server returned transaction without signature")
 	}
@@ -243,7 +243,7 @@ func (ec *Client) TransactionInBlock(ctx context.Context, blockHash common.Hash,
 	err := ec.c.CallContext(ctx, &json, "eth_getTransactionByBlockHashAndIndex", blockHash, hexutil.Uint64(index))
 	if err == nil {
 		if json == nil {
-			return nil, ethereum.NotFound
+			return nil, ethereum.ErrNotFound
 		} else if _, r, _ := json.tx.RawSignatureValues(); r == nil {
 			return nil, fmt.Errorf("server returned transaction without signature")
 		}
@@ -261,7 +261,7 @@ func (ec *Client) TransactionReceipt(ctx context.Context, txHash common.Hash) (*
 	err := ec.c.CallContext(ctx, &r, "eth_getTransactionReceipt", txHash)
 	if err == nil {
 		if r == nil {
-			return nil, ethereum.NotFound
+			return nil, ethereum.ErrNotFound
 		}
 	}
 	return r, err
diff --git a/interfaces.go b/interfaces.go
index a8b48c93d7..5d1bb33e2d 100644
--- a/interfaces.go
+++ b/interfaces.go
@@ -26,8 +26,8 @@ import (
 	"github.com/ethereum/go-ethereum/core/types"
 )
 
-// NotFound is returned by API methods if the requested item does not exist.
-var NotFound = errors.New("not found")
+// ErrNotFound is returned by API methods if the requested item does not exist.
+var ErrNotFound = errors.New("not found")
 
 // TODO: move subscription to package event