From 6947ee9bc9f971dfb44443fbe15833b4e2d2e577 Mon Sep 17 00:00:00 2001
From: Tobias Schmidt <ts@soundcloud.com>
Date: Fri, 8 Nov 2013 23:43:05 +0700
Subject: [PATCH] Try to create metrics root directory if missing

This change tries to be nice and create the metrics directoy first
before erroring out.

Change-Id: I72691cdc32469708cd671c6ef1fb7db55fe60430
---
 storage/metric/tiered.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/storage/metric/tiered.go b/storage/metric/tiered.go
index 17981c0c4..4088427f9 100644
--- a/storage/metric/tiered.go
+++ b/storage/metric/tiered.go
@@ -15,6 +15,7 @@ package metric
 
 import (
 	"fmt"
+	"os"
 	"sort"
 	"sync"
 	"time"
@@ -114,7 +115,9 @@ const watermarkCacheLimit = 1024 * 1024
 
 func NewTieredStorage(appendToDiskQueueDepth, viewQueueDepth uint, flushMemoryInterval time.Duration, memoryTTL time.Duration, rootDirectory string) (*TieredStorage, error) {
 	if isDir, _ := utility.IsDir(rootDirectory); !isDir {
-		return nil, fmt.Errorf("Could not find metrics directory %s", rootDirectory)
+		if err := os.MkdirAll(rootDirectory, 0755); err != nil {
+			return nil, fmt.Errorf("Could not find or create metrics directory %s: %s", rootDirectory, err)
+		}
 	}
 
 	diskStorage, err := NewLevelDBMetricPersistence(rootDirectory)