Rename app -> stack_orchestrator (#625)

stack_orchestrator/base.py

@@ -0,0 +1,82 @@
+# Copyright © 2022, 2023 Vulcanize
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http:#www.gnu.org/licenses/>.
+
+import os
+from abc import ABC, abstractmethod
+from stack_orchestrator.deploy.deploy import get_stack_status
+from decouple import config
+
+
+def get_stack(config, stack):
+    if stack == "package-registry":
+        return package_registry_stack(config, stack)
+    else:
+        return base_stack(config, stack)
+
+
+class base_stack(ABC):
+
+    def __init__(self, config, stack):
+        self.config = config
+        self.stack = stack
+
+    @abstractmethod
+    def ensure_available(self):
+        pass
+
+    @abstractmethod
+    def get_url(self):
+        pass
+
+
+class package_registry_stack(base_stack):
+
+    def ensure_available(self):
+        self.url = "<no registry url set>"
+        # Check if we were given an external registry URL
+        url_from_environment = os.environ.get("CERC_NPM_REGISTRY_URL")
+        if url_from_environment:
+            if self.config.verbose:
+                print(f"Using package registry url from CERC_NPM_REGISTRY_URL: {url_from_environment}")
+            self.url = url_from_environment
+        else:
+            # Otherwise we expect to use the local package-registry stack
+            # First check if the stack is up
+            registry_running = get_stack_status(self.config, "package-registry")
+            if registry_running:
+                # If it is available, get its mapped port and construct its URL
+                if self.config.debug:
+                    print("Found local package registry stack is up")
+                # TODO: get url from deploy-stack
+                self.url = "http://gitea.local:3000/api/packages/cerc-io/npm/"
+            else:
+                # If not, print a message about how to start it and return fail to the caller
+                print("ERROR: The package-registry stack is not running, and no external registry "
+                      "specified with CERC_NPM_REGISTRY_URL")
+                print("ERROR: Start the local package registry with: laconic-so --stack package-registry deploy-system up")
+                return False
+        return True
+
+    def get_url(self):
+        return self.url
+
+
+def get_npm_registry_url():
+    # If an auth token is not defined, we assume the default should be the cerc registry
+    # If an auth token is defined, we assume the local gitea should be used.
+    default_npm_registry_url = "http://gitea.local:3000/api/packages/cerc-io/npm/" if config(
+        "CERC_NPM_AUTH_TOKEN", default=None
+        ) else "https://git.vdb.to/api/packages/cerc-io/npm/"
+    return config("CERC_NPM_REGISTRY_URL", default=default_npm_registry_url)