Moved APIError exception to docker.errors module.

1 files changed, 37 insertions, 0 deletions

diff --git a/docker/errors.py b/docker/errors.py
index a462f93..9aad700 100644
--- a/docker/errors.py
+++ b/docker/errors.py
@@ -11,6 +11,43 @@
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 
+import requests
+
+
+class APIError(requests.exceptions.HTTPError):
+    def __init__(self, message, response, explanation=None):
+        # requests 1.2 supports response as a keyword argument, but
+        # requests 1.1 doesn't
+        super(APIError, self).__init__(message)
+        self.response = response
+
+        self.explanation = explanation
+
+        if self.explanation is None and response.content:
+            self.explanation = response.content.strip()
+
+    def __str__(self):
+        message = super(APIError, self).__str__()
+
+        if self.is_client_error():
+            message = '%s Client Error: %s' % (
+                self.response.status_code, self.response.reason)
+
+        elif self.is_server_error():
+            message = '%s Server Error: %s' % (
+                self.response.status_code, self.response.reason)
+
+        if self.explanation:
+            message = '%s ("%s")' % (message, self.explanation)
+
+        return message
+
+    def is_client_error(self):
+        return 400 <= self.response.status_code < 500
+
+    def is_server_error(self):
+        return 500 <= self.response.status_code < 600
+
 
 class DockerException(Exception):
     pass