From 4a038927ee136e409f87aed4f81f2e0dd56b0cc3 Mon Sep 17 00:00:00 2001
From: Armon Dadgar <armon.dadgar@gmail.com>
Date: Tue, 13 Jan 2015 11:50:57 -0800
Subject: [PATCH] api: More reliable session check

---
 api/semaphore.go | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/api/semaphore.go b/api/semaphore.go
index be939c82dd..88f4b59cce 100644
--- a/api/semaphore.go
+++ b/api/semaphore.go
@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"fmt"
 	"path"
-	"strings"
 	"sync"
 	"time"
 )
@@ -398,8 +397,9 @@ func (s *Semaphore) pruneDeadHolders(lock *semaphoreLock, pairs KVPairs) {
 	// Gather all the live holders
 	alive := make(map[string]struct{}, len(pairs))
 	for _, pair := range pairs {
-		session := strings.TrimPrefix(pair.Key, s.opts.Prefix)
-		alive[session] = struct{}{}
+		if pair.Session != "" {
+			alive[pair.Session] = struct{}{}
+		}
 	}
 
 	// Remove any holders that are dead