added support to create package alias #200

Author: boussaffawalid

README.md

@@ -1127,6 +1127,7 @@ Check [Conan Build policies](https://docs.conan.io/en/latest/mastering/policies.
 - **force_selinux**: Force docker to relabel file objects on the shared volumes
 - **skip_recipe_export**: If True, the package recipe will only be exported on the first build. Default [False]
 - **update_dependencies**: Update all dependencies before building e.g conan create -u
+- **version_alias**: Create a version alias for created packages. For example: if CPT_VERSION_ALIAS=latest, the package alias pkg_name/latest@user/channel will be created.
 
 Upload related parameters:
 
@@ -1287,7 +1288,7 @@ Check [Conan Build policies](https://docs.conan.io/en/latest/mastering/policies.
 - **CONAN_FORCE_SELINUX**: Force docker to relabel file objects on the shared volumes
 - **CONAN_SKIP_RECIPE_EXPORT**: If defined, the package recipe will only be exported on the first build.
 - **CPT_UPDATE_DEPENDENCIES**: Update all dependencies before building e.g conan create -u
-
+- **CPT_VERSION_ALIAS**: Create a version alias for created packages. For example: if CPT_VERSION_ALIAS=latest, the package alias pkg_name/latest@user/channel will be created.
 
 # Full example
 

cpt/packager.py

@@ -142,7 +142,8 @@ def __init__(self, username=None, channel=None, runner=None,
                  force_selinux=None,
                  skip_recipe_export=False,
                  update_dependencies=None,
-                 lockfile=None):
+                 lockfile=None,
+                 version_alias=None):
 
         conan_version = get_client_version()
 
@@ -205,6 +206,7 @@ def __init__(self, username=None, channel=None, runner=None,
         self.partial_reference = reference or os.getenv("CONAN_REFERENCE", None)
         self.channel = self._get_specified_channel(channel, reference)
         self.conanfile = conanfile or os.getenv("CONAN_CONANFILE", "conanfile.py")
+        self.version_alias = version_alias or os.getenv("CPT_VERSION_ALIAS", None)
 
         if self.partial_reference:
             if "@" in self.partial_reference:
@@ -683,7 +685,8 @@ def run_builds(self, curpage=None, total_pages=None, base_profile_name=None):
                                  conanfile=self.conanfile,
                                  lockfile=self.lockfile,
                                  skip_recipe_export=skip_recipe_export,
-                                 update_dependencies=self.update_dependencies)
+                                 update_dependencies=self.update_dependencies,
+                                 version_alias = self.version_alias)
                 r.run()
                 self._packages_summary.append({"configuration":  build, "package" : r.results})
             else:
@@ -718,7 +721,8 @@ def run_builds(self, curpage=None, total_pages=None, base_profile_name=None):
                                        lockfile=self.lockfile,
                                        force_selinux=self.force_selinux,
                                        skip_recipe_export=skip_recipe_export,
-                                       update_dependencies=self.update_dependencies)
+                                       update_dependencies=self.update_dependencies,
+                                       version_alias = self.version_alias)
 
                 r.run(pull_image=not pulled_docker_images[docker_image],
                       docker_entry_script=self.docker_entry_script)

cpt/runner.py

@@ -20,7 +20,7 @@ def __init__(self, profile_abs_path, reference, conan_api, uploader,
                  cwd=None, printer=None, upload=False, upload_only_recipe=None,
                  test_folder=None, config_url=None, config_args=None,
                  upload_dependencies=None, conanfile=None, skip_recipe_export=False,
-                 update_dependencies=False, lockfile=None):
+                 update_dependencies=False, lockfile=None, version_alias=None):
 
         self.printer = printer or Printer()
         self._cwd = cwd or os.getcwd()
@@ -48,6 +48,7 @@ def __init__(self, profile_abs_path, reference, conan_api, uploader,
         self.skip_recipe_export = skip_recipe_export
         self._update_dependencies = update_dependencies
         self._results = None
+        self._version_alias = version_alias
 
         patch_default_base_profile(conan_api, profile_abs_path)
         client_version = get_client_version()
@@ -154,6 +155,10 @@ def run(self):
                                     else:
                                         self._uploader.upload_packages(reference,
                                                                     self._upload, package_id)
+                                    if self._version_alias:
+                                        reference_alias = reference.replace(installed["recipe"]["version"], self._version_alias)
+                                        self._conan_api.export_alias(reference_alias, reference)
+                                        self._uploader.upload_recipe(reference_alias, self._upload)
                                 else:
                                     self.printer.print_message("Skipping upload for %s, "
                                                                "it hasn't been built" % package_id)
@@ -182,7 +187,8 @@ def __init__(self, profile_text, base_profile_text, base_profile_name, reference
                  force_selinux=None,
                  skip_recipe_export=False,
                  update_dependencies=False,
-                 lockfile=None):
+                 lockfile=None,
+                 version_alias=None):
 
         self.printer = printer or Printer()
         self._upload = upload
@@ -217,6 +223,7 @@ def __init__(self, profile_text, base_profile_text, base_profile_name, reference
         self._force_selinux = force_selinux
         self._skip_recipe_export = skip_recipe_export
         self._update_dependencies = update_dependencies
+        self._version_alias = version_alias
 
     def _pip_update_conan_command(self):
         commands = []