241 lines
11 KiB
Python
241 lines
11 KiB
Python
from huey import SqliteHuey
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import subprocess
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import os
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from .models import db, PrintFile, SystemConfig
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from .conf_parse import ConfParse
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import json
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import uuid
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import configparser
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huey = SqliteHuey(filename='huey_queue.db')
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@huey.task()
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def slice_stl_task(file_id, stl_filepath, quality_preset=None, infill_density=None, support_enable=None, support_pattern=None, delete_stl=False):
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# This is run by the Huey worker
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# We need to create an app context to interact with the database
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from app import create_app
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app = create_app()
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with app.app_context():
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print_file = PrintFile.query.get(file_id)
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if not print_file:
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return
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# Cache variables and commit slicing status
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gcode_filename = print_file.filename.rsplit('.', 1)[0] + '.gcode'
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gcode_filepath = os.path.join(app.config['UPLOAD_FOLDER'], gcode_filename)
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print_file.status = 'slicing'
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db.session.commit()
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# Remove DB session to avoid locking the sqlite db during long slicing operations
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db.session.remove()
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tmp_def_path = None
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try:
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# Create Cura engine options
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# use our local minimal configurations detached from the entire Cura framework
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print_config_path = os.path.abspath(os.path.join(app.root_path, '..', 'print_config'))
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printers_path = os.path.join(print_config_path, 'printers')
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extruders_path = os.path.join(print_config_path, 'extruders')
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materials_path = os.path.join(print_config_path, 'materials')
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presets_path = os.path.join(print_config_path, 'quality')
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variants_path = os.path.join(print_config_path, 'variants')
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env = os.environ.copy()
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env["CURA_ENGINE_SEARCH_PATH"] = f"{printers_path}:{extruders_path}:{materials_path}:{presets_path}:{variants_path}"
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def_files = [
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os.path.join(printers_path, "fdmprinter.def.json"),
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os.path.join(printers_path, "fdmextruder.def.json"),
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os.path.join(printers_path, "creality_base.def.json"),
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os.path.join(printers_path, "creality_ender3v3se.def.json")
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]
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inst_files_list = []
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if quality_preset:
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config = configparser.ConfigParser()
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preset_path = os.path.join(presets_path, 'creality', 'presets', quality_preset)
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if os.path.exists(preset_path):
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config.read(preset_path)
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material_type = config.get('metadata', 'material', fallback=None)
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variant_type = config.get('metadata', 'variant', fallback=None)
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quality_type = config.get('metadata', 'quality_type', fallback=None)
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if material_type:
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m_path = os.path.join(materials_path, f"{material_type}.inst.cfg")
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if os.path.exists(m_path): inst_files_list.append(m_path)
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if variant_type:
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variant_d = variant_type.split("mm")[0]
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v_path = os.path.join(variants_path, "creality", f"creality_ender3v3se_{variant_d}.inst.cfg")
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if os.path.exists(v_path): inst_files_list.append(v_path)
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if support_pattern == 'tree':
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t_path = os.path.join(print_config_path, 'supports', 'tree.inst.cfg')
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if os.path.exists(t_path): inst_files_list.append(t_path)
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elif support_pattern and support_pattern != 'false':
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n_path = os.path.join(print_config_path, 'supports', 'normal.inst.cfg')
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if os.path.exists(n_path): inst_files_list.append(n_path)
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if quality_preset and quality_type:
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g_path = os.path.join(presets_path, 'creality', 'globals', f"{quality_type}.inst.cfg")
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if os.path.exists(g_path): inst_files_list.append(g_path)
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if quality_preset and os.path.exists(preset_path):
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inst_files_list.append(preset_path)
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p = ConfParse(def_files)
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settings_with_inst = p.add_inst_cfg(inst_files_list)
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if infill_density is not None:
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if "infill_sparse_density" not in settings_with_inst: settings_with_inst["infill_sparse_density"] = {}
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settings_with_inst["infill_sparse_density"]["value"] = str(infill_density)
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if "infill_line_distance" not in settings_with_inst: settings_with_inst["infill_line_distance"] = {}
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settings_with_inst["infill_line_distance"]["value"] = str(100 / int(infill_density)) if int(infill_density) > 0 else "9999"
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if support_enable is not None:
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if "support_enable" not in settings_with_inst: settings_with_inst["support_enable"] = {}
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settings_with_inst["support_enable"]["value"] = True if support_enable in ['true', 'buildplate'] else False
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if "support_type" not in settings_with_inst: settings_with_inst["support_type"] = {}
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settings_with_inst["support_type"]["value"] = "'buildplate'" if support_enable == 'buildplate' else "'everywhere'"
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if support_pattern == 'tree':
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if "support_structure" not in settings_with_inst: settings_with_inst["support_structure"] = {}
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settings_with_inst["support_structure"]["value"] = "'tree'"
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elif support_pattern in settings_with_inst["support_pattern"]["options"].keys():
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if "support_structure" not in settings_with_inst: settings_with_inst["support_structure"] = {}
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settings_with_inst["support_structure"]["value"] = "'normal'"
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if "support_pattern" not in settings_with_inst: settings_with_inst["support_pattern"] = {}
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settings_with_inst["support_pattern"]["value"] = f"'{support_pattern}'"
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# Parse to exact values
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res = p.parse_configs(settings_with_inst)
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override_dict = {}
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for k, v in res.items():
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if v.get("enabled", True):
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val = v.get("value", None)
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if val is not None:
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# Filter out our protective ConfigStr wrappers
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# if type(val).__name__ == "ConfigStr": pass
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# else: override_dict[k] = {"default_value": val}
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override_dict[k] = {"value": val,"default_value": val}
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elif "default_value" in v:
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override_dict[k] = {"default_value": v["default_value"], "value": v["default_value"]}
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tmp_def_filename = f"tmp_{uuid.uuid4().hex}.def.json"
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tmp_def_path = os.path.join(app.config['UPLOAD_FOLDER'], tmp_def_filename)
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tmp_def_obj = {
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"version": 2,
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"name": "TempProfile",
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"inherits": "fdmprinter",
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"metadata": {
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"visible": True,
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"author": "System",
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"manufacturer": "System",
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"file_formats": "text/x-gcode",
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"first_start_actions": ["MachineSettingsAction"],
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"has_materials": True,
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"has_variants": True,
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"has_machine_quality": True,
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"variants_name": "Nozzle Size",
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"preferred_variant_name": "0.4mm Nozzle",
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"preferred_quality_type": "standard",
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"preferred_material": "generic_pla",
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},
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"overrides": override_dict
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}
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pretty_json = json.dumps(tmp_def_obj, indent=4)
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with open(tmp_def_path, "w") as f:
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f.write(pretty_json)
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command = [
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"CuraEngine", "slice",
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"-j", tmp_def_path,
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"-l", stl_filepath,
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"-o", gcode_filepath
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]
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app.logger.info(f"Running command: {' '.join(command)}")
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# print(f"Running command: {' '.join(command)}")
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process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=env)
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stdout, stderr = process.communicate()
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# if stdout:
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# print(f"[CuraEngine STDOUT]\n{stdout.decode('utf-8', errors='ignore')}")
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# if stderr:
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# print(f"[CuraEngine STDERR]\n{stderr.decode('utf-8', errors='ignore')}", flush=True)
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# Re-fetch print_file and update status
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print_file = PrintFile.query.get(file_id)
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if not print_file:
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return
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if process.returncode == 0:
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print_file.status = 'sliced'
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else:
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print_file.status = 'failed'
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app.logger.error(f"CuraEngine Error: {stderr.decode()}")
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except Exception as e:
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# Re-fetch in case of exception
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print_file = PrintFile.query.get(file_id)
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if print_file:
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print_file.status = 'failed'
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app.logger.error(f"Subprocess Exception: {e}")
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if delete_stl and os.path.exists(stl_filepath):
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try:
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os.remove(stl_filepath)
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except Exception as e:
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app.logger.error(f"Failed to delete temp STL {stl_filepath}: {e}")
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if tmp_def_path and os.path.exists(tmp_def_path):
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try:
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os.remove(tmp_def_path)
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# pass
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except Exception as e:
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app.logger.error(f"Failed to delete temp JSON config {tmp_def_path}: {e}")
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db.session.commit()
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db.session.remove()
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@huey.task()
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def merge_and_slice_task(file_id, inputs, merged_filepath, quality_preset=None, infill_density=None, support_enable=None, support_pattern=None, delete_stl=False):
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from app import create_app
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app = create_app()
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with app.app_context():
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from .models import PrintFile, db
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print_file = PrintFile.query.get(file_id)
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if not print_file:
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return
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db.session.remove()
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try:
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from stl_merger import merge_stls
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merge_stls(inputs, merged_filepath)
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# Now trigger the regular slicing task
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# We can just call the slicing logic or enqueue it
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slice_stl_task(file_id, merged_filepath, quality_preset, infill_density, support_enable, support_pattern, delete_stl=delete_stl)
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except Exception as e:
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print_file = PrintFile.query.get(file_id)
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if print_file:
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print_file.status = 'failed'
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db.session.commit()
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app.logger.error(f"Merge Exception: {e}")
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finally:
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db.session.remove()
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