refactor(led-driver): simplify websocket runtime and test layout
This commit is contained in:
218
src/controller_messages.py
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218
src/controller_messages.py
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"""Parse controller JSON (v1) and apply brightness, presets, OTA patterns, etc."""
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import json
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import socket
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from utils import convert_and_reorder_colors
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try:
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import uos as os
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except ImportError:
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import os
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def process_data(payload, settings, presets, controller_ip=None):
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"""Read one controller message; json.loads (bytes or str), then apply fields."""
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try:
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data = json.loads(payload)
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print(payload)
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if data.get("v", "") != "1":
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return
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except (ValueError, TypeError):
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return
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if "b" in data:
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apply_brightness(data, settings, presets)
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if "presets" in data:
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apply_presets(data, settings, presets)
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if "select" in data:
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apply_select(data, settings, presets)
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if "default" in data:
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apply_default(data, settings, presets)
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if "manifest" in data:
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apply_patterns_ota(data, presets, controller_ip=controller_ip)
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if "save" in data and ("presets" in data or "default" in data):
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presets.save()
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def apply_brightness(data, settings, presets):
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try:
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presets.b = max(0, min(255, int(data["b"])))
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settings["brightness"] = presets.b
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except (TypeError, ValueError):
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pass
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def apply_presets(data, settings, presets):
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presets_map = data["presets"]
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for id, preset_data in presets_map.items():
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if not preset_data:
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continue
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color_key = "c" if "c" in preset_data else ("colors" if "colors" in preset_data else None)
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if color_key is not None:
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try:
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preset_data[color_key] = convert_and_reorder_colors(
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preset_data[color_key], settings
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)
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except (TypeError, ValueError, KeyError):
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continue
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presets.edit(id, preset_data)
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print(f"Edited preset {id}: {preset_data.get('name', '')}")
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def apply_select(data, settings, presets):
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select_map = data["select"]
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device_name = settings["name"]
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select_list = select_map.get(device_name, [])
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if not select_list:
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return
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preset_name = select_list[0]
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step = select_list[1] if len(select_list) > 1 else None
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presets.select(preset_name, step=step)
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def apply_default(data, settings, presets):
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targets = data.get("targets") or []
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default_name = data["default"]
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if (
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settings["name"] in targets
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and isinstance(default_name, str)
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and default_name in presets.presets
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):
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settings["default"] = default_name
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def _parse_http_url(url):
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"""Parse http://host[:port]/path into (host, port, path)."""
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if not isinstance(url, str):
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raise ValueError("url must be a string")
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if not url.startswith("http://"):
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raise ValueError("only http:// URLs are supported")
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remainder = url[7:]
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slash_idx = remainder.find("/")
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if slash_idx == -1:
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host_port = remainder
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path = "/"
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else:
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host_port = remainder[:slash_idx]
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path = remainder[slash_idx:]
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if ":" in host_port:
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host, port_s = host_port.rsplit(":", 1)
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port = int(port_s)
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else:
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host = host_port
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port = 80
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if not host:
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raise ValueError("missing host")
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return host, port, path
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def _http_get_raw(url, timeout_s=10.0):
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host, port, path = _parse_http_url(url)
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req = (
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"GET %s HTTP/1.1\r\nHost: %s\r\nConnection: close\r\n\r\n" % (path, host)
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).encode("utf-8")
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sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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try:
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sock.settimeout(timeout_s)
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sock.connect((host, int(port)))
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sock.send(req)
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data = b""
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while True:
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chunk = sock.recv(1024)
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if not chunk:
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break
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data += chunk
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finally:
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try:
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sock.close()
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except Exception:
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pass
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sep = b"\r\n\r\n"
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if sep not in data:
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raise OSError("invalid HTTP response")
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head, body = data.split(sep, 1)
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status_line = head.split(b"\r\n", 1)[0]
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if b" 200 " not in status_line:
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raise OSError("HTTP status not OK: %s" % status_line.decode("utf-8"))
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return body
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def _http_get_json(url, timeout_s=10.0):
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body = _http_get_raw(url, timeout_s=timeout_s)
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return json.loads(body.decode("utf-8"))
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def _http_get_text(url, timeout_s=10.0, controller_ip=None):
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# Support relative URLs from controller messages.
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if isinstance(url, str) and url.startswith("/"):
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if not controller_ip:
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raise OSError("controller IP unavailable for relative URL")
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url = "http://%s%s" % (controller_ip, url)
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try:
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body = _http_get_raw(url, timeout_s=timeout_s)
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return body.decode("utf-8")
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except Exception:
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# Fallback for mDNS/unresolvable host: retry against current controller IP.
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if not controller_ip or not isinstance(url, str) or not url.startswith("http://"):
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raise
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_host, _port, path = _parse_http_url(url)
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fallback = "http://%s:%d%s" % (controller_ip, _port, path)
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body = _http_get_raw(fallback, timeout_s=timeout_s)
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return body.decode("utf-8")
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def _safe_pattern_filename(name):
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if not isinstance(name, str):
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return False
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if not name.endswith(".py"):
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return False
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if "/" in name or "\\" in name or ".." in name:
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return False
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return True
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def apply_patterns_ota(data, presets, controller_ip=None):
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manifest_payload = data.get("manifest")
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if not manifest_payload:
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return
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try:
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if isinstance(manifest_payload, dict):
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manifest = manifest_payload
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elif isinstance(manifest_payload, str):
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manifest = _http_get_json(manifest_payload, timeout_s=20.0)
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else:
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print("patterns_ota: invalid manifest payload type")
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return
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files = manifest.get("files", [])
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if not isinstance(files, list) or not files:
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print("patterns_ota: no files in manifest")
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return
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try:
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os.mkdir("patterns")
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except OSError:
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pass
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updated = 0
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for item in files:
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if not isinstance(item, dict):
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continue
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name = item.get("name")
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url = item.get("url")
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inline_code = item.get("code")
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if not _safe_pattern_filename(name):
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continue
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if isinstance(inline_code, str):
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code = inline_code
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elif isinstance(url, str):
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code = _http_get_text(url, timeout_s=20.0, controller_ip=controller_ip)
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else:
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continue
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with open("patterns/" + name, "w") as f:
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f.write(code)
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updated += 1
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if updated > 0:
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presets.reload_patterns()
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print("patterns_ota: updated", updated, "pattern file(s)")
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else:
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print("patterns_ota: no valid files downloaded")
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except Exception as e:
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print("patterns_ota failed:", e)
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