Add COS integration to the applications support it

sunbeam-python/sunbeam/core/juju.py

@@ -1590,6 +1590,44 @@ def charm_trust(self, application_name: str, model: str) -> None:
         with self._model(model) as juju:
             juju.trust(application_name, scope="cluster")
 
+    def attach_resource(
+        self,
+        application_name: str,
+        model: str,
+        resource_name: str,
+        resource_path: str,
+    ) -> None:
+        """Upload a file resource to a deployed application.
+
+        :param application_name: Name of the application
+        :param model: Name of the model
+        :param resource_name: Name of the resource as defined in the charm metadata
+        :param resource_path: Local path to the resource file to upload
+        """
+        with self._model(model) as juju:
+            juju.cli(
+                "attach-resource",
+                application_name,
+                f"{resource_name}={resource_path}",
+            )
+
+    def get_application_resources(
+        self,
+        application_name: str,
+        model: str,
+    ) -> list[dict]:
+        """Return the resources defined for a deployed application.
+
+        :param application_name: Name of the application
+        :param model: Name of the model
+        :returns: List of resource dicts sorted by name, each containing at
+            minimum the keys ``name``, ``type``, and ``description``.
+        """
+        with self._model(model) as juju:
+            raw = juju.cli("resources", "--format", "json", application_name)
+        data = json.loads(raw)
+        return sorted(data.get("resources", []), key=lambda r: r["name"])
+
     def charm_refresh(
         self,
         application_name: str,

sunbeam-python/sunbeam/features/observability/etc/deploy-grafana-agent/main.tf

@@ -54,6 +54,21 @@ resource "juju_integration" "observability-agent-integrations" {
   }
 }
 
+resource "juju_integration" "observability-agent-integrations-juju-info" {
+  for_each   = toset(var.observability-agent-integration-apps-juju-info)
+  model_uuid = data.juju_model.principal_application_model.uuid
+
+  application {
+    name     = juju_application.observability-agent.name
+    endpoint = "juju-info"
+  }
+
+  application {
+    name     = each.value
+    endpoint = "juju-info"
+  }
+}
+
 resource "juju_integration" "observability-agent-to-cos-prometheus" {
   count      = var.receive-remote-write-offer-url != null ? 1 : 0
   model_uuid = data.juju_model.principal_application_model.uuid

sunbeam-python/sunbeam/features/observability/etc/deploy-grafana-agent/variables.tf

@@ -4,7 +4,13 @@
 # SPDX-License-Identifier: Apache-2.0
 
 variable "observability-agent-integration-apps" {
-  description = "List of the deployed principal applications that integrate with opentelemetry collector"
+  description = "List of the deployed principal applications that integrate with opentelemetry collector via cos_agent interface"
+  type        = list(string)
+  default     = []
+}
+
+variable "observability-agent-integration-apps-juju-info" {
+  description = "List of the deployed principal applications that integrate with opentelemetry collector via juju-info interface"
   type        = list(string)
   default     = []
 }

sunbeam-python/sunbeam/features/observability/etc/deploy-hardware-observer/main.tf

@@ -0,0 +1,62 @@
+# Terraform manifest for deployment of Hardware Observer
+#
+# SPDX-FileCopyrightText: 2024 - Canonical Ltd
+# SPDX-License-Identifier: Apache-2.0
+
+terraform {
+  required_providers {
+    juju = {
+      source  = "juju/juju"
+      version = "= 1.3.1"
+    }
+  }
+}
+
+provider "juju" {}
+
+data "juju_model" "principal_application_model" {
+  uuid = var.principal-application-model-uuid
+}
+
+resource "juju_application" "hardware-observer" {
+  name       = "hardware-observer"
+  model_uuid = data.juju_model.principal_application_model.uuid
+
+  charm {
+    name     = "hardware-observer"
+    channel  = var.hardware-observer-channel
+    revision = var.hardware-observer-revision
+    base     = var.hardware-observer-base
+  }
+
+  config = var.hardware-observer-config
+}
+
+resource "juju_integration" "hardware-observer-to-observability-agent" {
+  model_uuid = data.juju_model.principal_application_model.uuid
+
+  application {
+    name     = juju_application.hardware-observer.name
+    endpoint = "cos-agent"
+  }
+
+  application {
+    name     = var.observability-agent-app
+    endpoint = "cos-agent"
+  }
+}
+
+resource "juju_integration" "hardware-observer-principal-integrations" {
+  for_each   = toset(var.principal-applications)
+  model_uuid = data.juju_model.principal_application_model.uuid
+
+  application {
+    name     = juju_application.hardware-observer.name
+    endpoint = "general-info"
+  }
+
+  application {
+    name     = each.value
+    endpoint = "juju-info"
+  }
+}

sunbeam-python/sunbeam/features/observability/etc/deploy-hardware-observer/variables.tf

@@ -0,0 +1,45 @@
+# Terraform manifest for deployment of Hardware Observer
+#
+# SPDX-FileCopyrightText: 2024 - Canonical Ltd
+# SPDX-License-Identifier: Apache-2.0
+
+variable "principal-application-model-uuid" {
+  description = "UUID of the Juju model principal application is deployed in"
+  type        = string
+}
+
+variable "principal-applications" {
+  description = "List of the deployed principal applications that hardware-observer integrates with via juju-info"
+  type        = list(string)
+  default     = []
+}
+
+variable "observability-agent-app" {
+  description = "Name of the observability agent application to integrate with"
+  type        = string
+  default     = "opentelemetry-collector"
+}
+
+variable "hardware-observer-channel" {
+  description = "Channel to use when deploying hardware-observer charm"
+  type        = string
+  default     = "latest/stable"
+}
+
+variable "hardware-observer-revision" {
+  description = "Channel revision to use when deploying hardware-observer charm"
+  type        = number
+  default     = null
+}
+
+variable "hardware-observer-base" {
+  description = "Base to use when deploying hardware-observer charm"
+  type        = string
+  default     = "ubuntu@24.04"
+}
+
+variable "hardware-observer-config" {
+  description = "Config to use when deploying hardware-observer charm"
+  type        = map(string)
+  default     = {}
+}