Initial implementation of hardware module

Incomplete

chi/hardware.py

@@ -0,0 +1,56 @@
+from dataclasses import dataclass
+from datetime import datetime
+from typing import List, Optional, Tuple
+
+
+from .clients import blazar
+from .context import get, RESOURCE_API_URL
+
+import requests
+import json
+import logging
+
+LOG = logging.getLogger(__name__)
+
+@dataclass
+class Node:
+    site_name: str
+    node_name: str
+    node_type: str
+    # Other fields from the hardware API
+
+    def next_free_timeslot(self) -> Tuple[datetime, datetime]:
+        raise NotImplementedError()
+
+
+def get_nodes(
+    all_sites: bool = False,
+    filter_reserved: bool = False,
+    gpu: Optional[bool] = None,
+    number_cpu: Optional[int] = None,
+) -> List[Node]:
+    site = get("region_name")  # Get the site using the get method from the context module
+    endpoint = f"sites/{site}/clusters/chameleon/nodes"  # Build the endpoint URL
+    api = G5K_API()
+    data = api.call(endpoint)  # Make the API call
+    nodes = []
+    for node_data in data:
+        node = Node(
+            site_name=site,
+            node_name=node_data["name"],
+            node_type=node_data["type"],
+        )
+        nodes.append(node)
+    return nodes
+
+class G5K_API:
+    def call(self, endpoint):
+        url = self.make_url(endpoint)
+        LOG.info("Requesting %s from reference API ...", url)
+        resp = requests.get(url)
+        LOG.info("Response received. Parsing to json ...")
+        data = resp.json()
+        return data
+
+    def make_url(self, endpoint):
+        return "{0}/{1}.{2}".format(RESOURCE_API_URL, endpoint, "json")