ALBS-662: Added the ability to authenticate other CAS users' artifacts

Reviewed-on: almalinux/cas_wrapper#5

cas_wrapper.py

@@ -1,4 +1,3 @@
-from concurrent.futures import ThreadPoolExecutor, as_completed
 import json
 import logging
 import typing
@@ -14,16 +13,20 @@ class CasWrapper:
 
     binary_name = 'cas'
 
+    @classmethod
+    def _is_binary_present(cls):
+        if cls.binary_name not in local:
+            raise FileNotFoundError(
+                'Binary CAS is not found in PATH on the machine',
+            )
+
     def __init__(
             self,
             cas_api_key: str,
             cas_signer_id: str,
             logger: logging.Logger = None,
     ):
-        if self.binary_name not in local:
-            raise FileNotFoundError(
-                'Binary CAS is not found in PATH on the machine',
-            )
+        self._is_binary_present()
         self._cas_api_key = cas_api_key
         self._cas_signer_id = cas_signer_id
         self._cas = local['cas']
@@ -31,6 +34,13 @@ class CasWrapper:
         if self._logger is None:
             self._logger = logging.getLogger()
 
+    @classmethod
+    def get_version(cls):
+        cls._is_binary_present()
+        command = local['cas']['--version']
+        version = command().split()[-1].split('v')[1]
+        return version
+
     def ensure_login(self):
         with local.env(
             CAS_API_KEY=self._cas_api_key,
@@ -69,11 +79,36 @@ class CasWrapper:
             result_of_execution = command()
         return json.loads(result_of_execution)['hash']
 
+    def notarize_no_exc(
+            self,
+            local_path: str,
+            metadata: typing.Dict = None,
+    ) -> typing.Tuple[bool, str]:
+        """
+        Wrapper for avoiding raising exceptions during notarization.
+        Return `success` flag instead for library user to react respectively.
+        :param local_path: path to a local Git repo
+        :param metadata: additional metadata
+        :return: boolean flag for operation success and the hash
+            of the notarized artifact.
+        :rtype: tuple
+        """
+        success = False
+        try:
+            cas_hash = self.notarize(local_path, metadata=metadata)
+            success = True
+        except Exception:
+            self._logger.exception('Cannot notarize artifact: %s',
+                                   local_path)
+            cas_hash = ''
+        return success, cas_hash
+
     def authenticate(
             self,
             local_path: str,
             return_json: bool = False,
             use_hash: bool = False,
+            signer_id: str = None,
     ):
         """
         Wrapper around `cas authenticate`
@@ -89,6 +124,8 @@ class CasWrapper:
         command_args = ['authenticate', local_path]
         if use_hash:
             command_args = ['authenticate', '--hash', local_path]
+        if signer_id:
+            command_args.extend(('--signerID', signer_id))
         command_args.extend(('-o', 'json'))
         command = self._cas[command_args]
         try:
@@ -112,6 +149,7 @@ class CasWrapper:
     def authenticate_source(
         self,
         local_path: str,
+        signer_id: str = None,
     ) -> typing.Tuple[bool, typing.Optional[str]]:
         """
         Authenticates source by git path.
@@ -121,7 +159,11 @@ class CasWrapper:
         commit_cas_hash = None
         self.ensure_login()
         try:
-            result_json = self.authenticate(local_path, return_json=True)
+            result_json = self.authenticate(
+                local_path,
+                return_json=True,
+                signer_id=signer_id
+            )
             is_authenticated = result_json['verified']
             commit_cas_hash = result_json['hash']
         # we can fall with ProcessExecutionError,
@@ -134,6 +176,7 @@ class CasWrapper:
         self,
         local_path: str,
         use_hash: bool = False,
+        signer_id: str = None,
     ) -> bool:
         """
         Authenticates artifact by artifact path or hash if `use_hash` is True.
@@ -146,6 +189,7 @@ class CasWrapper:
                 local_path,
                 use_hash=use_hash,
                 return_json=True,
+                signer_id=signer_id
             )['verified']
         # we can fall with ProcessExecutionError,
         # because artifact can be not notarized
@@ -166,19 +210,19 @@ class CasWrapper:
         all_artifacts_is_notarized = True
         notarized_artifacts = {}
         self.ensure_login()
-        with ThreadPoolExecutor(max_workers=4) as executor:
-            futures = {
-                executor.submit(self.notarize, artifact_path, metadata): artifact_path
-                for artifact_path in artifact_paths
-            }
-            for future in as_completed(futures):
-                artifact_path = futures[future]
-                try:
-                    cas_artifact_hash = future.result()
-                except Exception:
-                    self._logger.exception('Cannot notarize artifact: %s',
-                                           artifact_path)
-                    all_artifacts_is_notarized = False
-                    continue
-                notarized_artifacts[artifact_path] = cas_artifact_hash
+
+        # ALBS-576: We stopped doing this process in parallel due to the
+        # problems experienced and described in this CAS issue:
+        # https://github.com/codenotary/cas/issues/275
+        # Hence, we decided to go sequential here until the problem is
+        # resolved in CAS itself.
+        for artifact_path in artifact_paths:
+            try:
+                cas_artifact_hash = self.notarize(artifact_path, metadata)
+            except Exception:
+                self._logger.exception('Cannot notarize artifact: %s',
+                                       artifact_path)
+                all_artifacts_is_notarized = False
+                continue
+            notarized_artifacts[artifact_path] = cas_artifact_hash
         return all_artifacts_is_notarized, notarized_artifacts

setup.py

@@ -2,7 +2,7 @@ from setuptools import setup
 
 setup(
     name="cas_wrapper",
-    version="0.0.2",
+    version="0.0.5",
     author="Stepan Oksanichenko",
     author_email="soksanichenko@almalinux.org",
     description="The python wrapper around binary cas from "