Add noop mode for unsupported systems

Add wildcard triple for unsupported systems

The `any` tag is now installed when downloading the package from an
unsupported system.

Don't start components when on unsupported arch

When trying to run the agent, OpenTelemetry and probes on an unsupported
system (any-any), prevent the three of them from starting.

.changesets/add-noop-mode-for-unsupported-systems.md

@@ -0,0 +1,6 @@
+---
+bump: "patch"
+type: "add"
+---
+
+Unsupported systems, like Microsoft Windows, won't start the agent and other integration components to prevent them from failing and allowing apps to be run normally.

src/appsignal/agent.py

@@ -16,6 +16,15 @@ class Agent:
 
     def start(self, config: Config) -> None:
         config.set_private_environ()
+
+        if self.architecture_and_platform() == ["any"]:
+            print(
+                "AppSignal agent is not available for this platform. "
+                "The integration is now running in no-op mode therefore "
+                "no data will be sent to AppSignal."
+            )
+            return
+
         p = subprocess.Popen(
             [self.agent_path, "start", "--private"],
             stdout=subprocess.PIPE,

src/appsignal/client.py

@@ -41,6 +41,8 @@ def start(self) -> None:
         if self._config.is_active():
             logger.info("Starting AppSignal")
             agent.start(self._config)
+            if not agent.active:
+                return
             start_opentelemetry(self._config)
             self._start_probes()
         else:

src/scripts/build_hook.py

@@ -114,6 +114,12 @@ def initialize(self, _version: str, build_data: dict[str, Any]) -> None:
 
         rm(agent_path)
 
+        if triple == "any":
+            print("Skipping agent download for `any` triple")
+            with open(platform_path, "w") as platform:
+                platform.write(triple)
+            return
+
         tempdir_path = os.path.join(self.root, "tmp", triple)
         os.makedirs(tempdir_path, exist_ok=True)
 

src/scripts/platform.py

@@ -19,4 +19,5 @@
     # https://peps.python.org/pep-0656/
     "aarch64-linux-musl": "musllinux_1_1_aarch64",
     "x86_64-linux-musl": "musllinux_1_1_x86_64",
+    "any": "any",
 }