Refactor libpod python varlink bindings

- More pythonic
- Leverage context managers to help with socket leaks
- Add system unittest's
- Add image unittest's
- Add container unittest's
- Add models for system, containers and images, and their collections
- Add helper functions for datetime parsing/formatting
- GetInfo() implemented
- Add support for setuptools
- Update documentation
- Support for Python 3.4-3.6

Signed-off-by: Jhon Honce <jhonce@redhat.com>

Closes: #748
Approved by: baude

1 files changed, 58 insertions, 0 deletions

diff --git a/contrib/python/podman/libs/errors.py b/contrib/python/podman/libs/errors.py
new file mode 100644
index 000000000..c28afd940
--- /dev/null
+++ b/contrib/python/podman/libs/errors.py
@@ -0,0 +1,58 @@
+"""Error classes and wrappers for VarlinkError."""
+from varlink import VarlinkError
+
+
+class VarlinkErrorProxy(VarlinkError):
+    """Class to Proxy VarlinkError methods."""
+
+    def __init__(self, obj):
+        """Construct proxy from Exception."""
+        self._obj = obj
+        self.__module__ = 'libpod'
+
+    def __getattr__(self, item):
+        """Return item from proxied Exception."""
+        return getattr(self._obj, item)
+
+
+class ContainerNotFound(VarlinkErrorProxy):
+    """Raised when Client can not find requested container."""
+
+    pass
+
+
+class ImageNotFound(VarlinkErrorProxy):
+    """Raised when Client can not find requested image."""
+
+    pass
+
+
+class ErrorOccurred(VarlinkErrorProxy):
+    """Raised when an error occurs during the execution.
+
+    See error() to see actual error text.
+    """
+
+    pass
+
+
+class RuntimeError(VarlinkErrorProxy):
+    """Raised when Client fails to connect to runtime."""
+
+    pass
+
+
+error_map = {
+    'io.projectatomic.podman.ContainerNotFound': ContainerNotFound,
+    'io.projectatomic.podman.ErrorOccurred': ErrorOccurred,
+    'io.projectatomic.podman.ImageNotFound': ImageNotFound,
+    'io.projectatomic.podman.RuntimeError': RuntimeError,
+}
+
+
+def error_factory(exception):
+    """Map Exceptions to a discrete type."""
+    try:
+        return error_map[exception.error()](exception)
+    except KeyError:
+        return exception