From ff7a1a8788965166d5fe88f70758f47c629871ea Mon Sep 17 00:00:00 2001
From: Jose Ricardo <zehzinho@gmail.com>
Date: Fri, 19 Jun 2015 17:12:27 -0400
Subject: [PATCH] Raising NoCredentialsException on utils#find_api_key

NoCredentialsException is a ClickException, which is handled nicely by
click, displaying the error msg and returning an exit code != 0.
---
 shub/exceptions.py |  5 +++++
 shub/utils.py      | 13 ++++++++++++-
 2 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 shub/exceptions.py

diff --git a/shub/exceptions.py b/shub/exceptions.py
new file mode 100644
index 00000000..67b39a47
--- /dev/null
+++ b/shub/exceptions.py
@@ -0,0 +1,5 @@
+from click import ClickException
+
+
+class NoCredentialsException(ClickException):
+    pass
diff --git a/shub/utils.py b/shub/utils.py
index 45a53140..91c8d2b0 100644
--- a/shub/utils.py
+++ b/shub/utils.py
@@ -10,6 +10,7 @@
 import requests
 
 from shub.click_utils import log
+from shub.exceptions import NoCredentialsException
 
 SCRAPY_CFG_FILE = os.path.expanduser("~/.scrapy.cfg")
 OS_WIN = True if os.name == 'nt' else False
@@ -28,10 +29,20 @@ def missing_modules(*modules):
 
 
 def find_api_key():
-    """Finds and returns the Scrapy Cloud APIKEY"""
+    """Finds and returns the Scrapy Cloud APIKEY
+
+    Raises:
+        NoCredentialsException: if no API key is found
+    """
     key = os.getenv("SHUB_APIKEY")
     if not key:
         key = get_key_netrc()
+
+    if not key:
+        err = ("Your credentials haven't been defined.\n"
+               "Use 'shub login' or set the SHUB_APIKEY environment variable.")
+        raise NoCredentialsException(err)
+
     return key