Compare commits
13 Commits
multi-prin
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d2f670bb68
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178
poetry.lock
generated
178
poetry.lock
generated
@@ -75,6 +75,25 @@ files = [
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]
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[[package]]
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name = "brother-ql-inventree"
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[package.dependencies]
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version = "2026.4.22"
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@@ -867,84 +886,84 @@ files = [
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{file = "numpy-2.4.6-cp314-cp314-musllinux_1_2_aarch64.whl", hash = "sha256:33111801a01c12a8a1e3721f0a9232f8cfc8ae2c6b7098167e6f623c6073f402"},
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{file = "numpy-2.4.6-cp314-cp314-musllinux_1_2_x86_64.whl", hash = "sha256:ae506e6902902557576a26ff33eda8695e7ecb3cb36c3b573a0765dee114ebdb"},
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{file = "numpy-2.4.6-cp314-cp314-win_amd64.whl", hash = "sha256:b507f5c4c1d508876d1819b6bf9a49d365b96320b5d4993426b33a23ca4b8261"},
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{file = "numpy-2.4.6-cp314-cp314-win_arm64.whl", hash = "sha256:6f41ae150c4e32db4f3310cdaf64b1593a03dbabe29eec77fc9b50fe64061df6"},
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{file = "numpy-2.4.6-cp314-cp314t-macosx_11_0_arm64.whl", hash = "sha256:ece3d2cfe132e7d51f44a832b303895e6f2d499c5e74dfbdb06ee246147a304a"},
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{file = "numpy-2.4.6-cp314-cp314t-macosx_14_0_arm64.whl", hash = "sha256:e3e5193ef5a3dc73bceee50f7fdc2c90dbb76c42df8d8fae3d1067a583df579e"},
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{file = "numpy-2.4.6-cp314-cp314t-macosx_14_0_x86_64.whl", hash = "sha256:17f9ade344e7d9b464a084d69bcf18fc691cb1db67c62ed80820bf4926d78f0e"},
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{file = "numpy-2.4.6-cp314-cp314t-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:9cd5ffd25db4e7ba6a375693b3fc0fc1791ec636c17db3720da19bde7180ec43"},
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{file = "numpy-2.4.6-cp314-cp314t-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:7d92c3819208a60205a12a245c91ad70cb0a85336659b19b834205573ac8456e"},
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{file = "numpy-2.4.6-cp314-cp314t-musllinux_1_2_aarch64.whl", hash = "sha256:e85b752a1e912b70eaad4fafbd4d1238007ab221de2009b9a2f5ae7461239895"},
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{file = "numpy-2.4.6-cp314-cp314t-musllinux_1_2_x86_64.whl", hash = "sha256:29cb7f67d10b479ff07c17d33e39f78c07f71c40ef30d63c153d340e96cd3fb4"},
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{file = "numpy-2.4.6-cp314-cp314t-win32.whl", hash = "sha256:260a5d70215b61ab4fadf5c7baacd64821842975eea312125ed3c39a6391b063"},
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{file = "numpy-2.4.6-cp314-cp314t-win_amd64.whl", hash = "sha256:81a1cca95ed5bb92aa8b10dd2cdc9a0d3853a50fad926c28b5d7e8ea54389627"},
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{file = "numpy-2.4.6-cp314-cp314t-win_arm64.whl", hash = "sha256:0c9136e14ed34a9e343a31c533d78a9813a69a3148332bce5e9821cb2f996e66"},
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{file = "numpy-2.4.6-pp311-pypy311_pp73-macosx_10_15_x86_64.whl", hash = "sha256:55cced7c52e981362f708ad635198e97a752dfba412cc03c23bbf3bd8d5cd662"},
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{file = "numpy-2.4.6-pp311-pypy311_pp73-macosx_11_0_arm64.whl", hash = "sha256:d6da64deb6b8ed903e7560180a92f2d804ee1ba5eeb849ac2748b8c1aba1f6d7"},
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{file = "numpy-2.4.6-pp311-pypy311_pp73-macosx_14_0_arm64.whl", hash = "sha256:68a5124b13fa6cc2086764a20005d30bc0548146f7f5322f02fce212ca14317f"},
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{file = "numpy-2.4.6-pp311-pypy311_pp73-macosx_14_0_x86_64.whl", hash = "sha256:948424b06129ce883307e8cff868c31396d8dc7630a59c61d70d98dbe70f222c"},
|
||||
{file = "numpy-2.4.6-pp311-pypy311_pp73-manylinux_2_27_aarch64.manylinux_2_28_aarch64.whl", hash = "sha256:5dbbdb29840ca3d91ee0fece42fc29278886d908280bfec0a5846c6f901a3eb0"},
|
||||
{file = "numpy-2.4.6-pp311-pypy311_pp73-manylinux_2_27_x86_64.manylinux_2_28_x86_64.whl", hash = "sha256:8ad03c0965fb3c692200e74d458ca28c1dbb4ce96f9a479a8aa041ad5fabca02"},
|
||||
{file = "numpy-2.4.6-pp311-pypy311_pp73-win_amd64.whl", hash = "sha256:2803abfebfc990042cd494d8ce2d5f82e9d847af6d35ec486923aa19dbad5e73"},
|
||||
{file = "numpy-2.4.6.tar.gz", hash = "sha256:f3a3570c4a2a16746ac2c31a7c7c7b0c186b95ce902e33db6f28094ed7387dda"},
|
||||
]
|
||||
|
||||
[[package]]
|
||||
@@ -974,6 +993,17 @@ files = [
|
||||
{file = "packaging-26.2.tar.gz", hash = "sha256:ff452ff5a3e828ce110190feff1178bb1f2ea2281fa2075aadb987c2fb221661"},
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "packbits"
|
||||
version = "0.6"
|
||||
description = "PackBits encoder/decoder"
|
||||
optional = false
|
||||
python-versions = "*"
|
||||
groups = ["main"]
|
||||
files = [
|
||||
{file = "packbits-0.6.tar.gz", hash = "sha256:bc6b370bb34e04ac8cfa835e06c0484380affc6d593adb8009dd6c0f7bfff034"},
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "pep8"
|
||||
version = "1.7.1"
|
||||
@@ -1853,4 +1883,4 @@ h11 = ">=0.16.0,<1"
|
||||
[metadata]
|
||||
lock-version = "2.1"
|
||||
python-versions = ">=3.14"
|
||||
content-hash = "fd3fb42c796aaaee4193f31df09bb4c74277855c489bf34a27c4bc1616851dfb"
|
||||
content-hash = "18e1a5c8b085aa639b665279856f9e3c51a734a6a8d1d4dd135ca7e4f67e86ae"
|
||||
|
||||
@@ -42,6 +42,7 @@ dependencies = [
|
||||
"python-escpos (>=3.1,<4.0)",
|
||||
"pep8 (>=1.7.1,<2.0.0)",
|
||||
"pylint (>=4.0.5,<5.0.0)",
|
||||
"brother-ql-inventree (>=1.3,<2.0)",
|
||||
]
|
||||
|
||||
[tool.poetry]
|
||||
|
||||
214
src/main.py
214
src/main.py
@@ -39,11 +39,14 @@ from flask_limiter.util import get_remote_address
|
||||
from printer import Printer # The wrapper for the printer class
|
||||
from raspberry import Raspberry # The Raspberry pi control Class
|
||||
from web import Web # Wrapper for the web routes and API
|
||||
from print_queue import PrintQueue
|
||||
from worker import PrintWorker
|
||||
|
||||
# Variables
|
||||
|
||||
# We create the main Flask object
|
||||
app = Flask(__name__)
|
||||
socketio = SocketIO(app)
|
||||
socketio = SocketIO(app, cors_allowed_origins="*")
|
||||
|
||||
# Global variables
|
||||
ALLOWED_EXTENSIONS = {"png", "jpg", "jpeg", "gif", "webp"}
|
||||
|
||||
# Load the configuration file
|
||||
@@ -82,10 +85,10 @@ except FileExistsError:
|
||||
app.logger.debug("Directory %s already exists.", UPLOAD_FOLDER)
|
||||
except PermissionError:
|
||||
app.logger.error("Permission denied: Unable to create %s", UPLOAD_FOLDER)
|
||||
exit(77)
|
||||
sys.exit(77)
|
||||
|
||||
# Output the config file
|
||||
if os.getenv("LIPY_DEBUG") is True:
|
||||
if os.getenv("FLASK_DEBUG"):
|
||||
pprint.pprint(configuration_file)
|
||||
|
||||
# We define the app module used by Flask
|
||||
@@ -98,6 +101,9 @@ app.config["TEMPLATES_AUTO_RELOAD"] = True
|
||||
# Printer connection
|
||||
# Uses the class defined in the printer.py file
|
||||
printer = Printer(app, 0x04B8, 0x0E28)
|
||||
# printers = Printer(app)
|
||||
# printers.discover_printers()
|
||||
# printers.init()
|
||||
printer.init_printer()
|
||||
|
||||
# Find out if we are running on a Raspberry Pi
|
||||
@@ -113,18 +119,22 @@ rpi = Raspberry(
|
||||
|
||||
RASPBERRY_PI_CONNECTED = rpi.is_raspberry_pi()
|
||||
|
||||
# Queue creation
|
||||
print_queue = PrintQueue(app)
|
||||
|
||||
# Web & API routes
|
||||
web = Web(app, print_queue)
|
||||
|
||||
web = Web(app, printer)
|
||||
|
||||
if __name__ == "__main__":
|
||||
app.run(debug=True, use_reloader=False, host="0.0.0.0", ssl_context="adhoc")
|
||||
# Start worker thread
|
||||
worker = PrintWorker(app, print_queue, printer, socketio)
|
||||
worker.start()
|
||||
|
||||
limiter = Limiter(
|
||||
get_remote_address, app=app, default_limits=["1500 per day", "500 per hour"]
|
||||
)
|
||||
|
||||
# General routes
|
||||
|
||||
|
||||
@app.route("/")
|
||||
@limiter.limit("1/second", override_defaults=False)
|
||||
@@ -142,6 +152,85 @@ def webcam():
|
||||
return render_template("webcam.html")
|
||||
|
||||
|
||||
# Form treatement
|
||||
|
||||
|
||||
@app.route("/web/print/sms", methods=["POST"])
|
||||
@limiter.limit("6/minute", override_defaults=False)
|
||||
def web_print_sms():
|
||||
"""Prints a short message on a printer"""
|
||||
app.logger.debug("Printing an sms via web method")
|
||||
|
||||
try:
|
||||
txt = request.form["txt"]
|
||||
except werkzeug.exceptions.BadRequestKeyError as e:
|
||||
app.logger.error("Whoops, we are missing the txt input field. : %s ", str(e))
|
||||
flash("Whoops, no forms submitted or missing signature : " + str(e), "error")
|
||||
return redirect(url_for("index"))
|
||||
|
||||
try:
|
||||
# comment: We try to get a signature
|
||||
sign = request.form["signature"]
|
||||
except werkzeug.exceptions.BadRequestKeyError as e:
|
||||
app.logger.warning(
|
||||
"No signature found for this print, using default signature : %s ", str(e)
|
||||
)
|
||||
sign = configuration_file["defaults"]["signature"]
|
||||
|
||||
try:
|
||||
web.print_sms(txt, sign)
|
||||
except RuntimeError as e:
|
||||
app.logger.error("Whoops, we could not print an SMS because : %s ", str(e))
|
||||
flash("Whoops, we could not print an SMS because :" + str(e), "error")
|
||||
return redirect(url_for("index"))
|
||||
|
||||
# end try
|
||||
flash("The SMS has been printed !", "info")
|
||||
return redirect(url_for("index"))
|
||||
|
||||
|
||||
@app.route("/web/print/img", methods=["POST"])
|
||||
@limiter.limit("1/second", override_defaults=False)
|
||||
def web_print_img():
|
||||
"""Prints an image on a printer"""
|
||||
app.logger.debug("Printing an image with web method")
|
||||
|
||||
try:
|
||||
# comment: We try to get a signature
|
||||
sign = request.form["signature"]
|
||||
except werkzeug.exceptions.BadRequestKeyError as e:
|
||||
app.logger.warning(
|
||||
"No signature found for this print, using default signature : %s", str(e)
|
||||
)
|
||||
sign = configuration_file["defaults"]["signature"]
|
||||
|
||||
# check if the post request has the file part
|
||||
if "img" not in request.files:
|
||||
app.logger.error("Whoops, no images submitted : %s ", str(e))
|
||||
app.logger.error("Error getting the files : %s", str(e))
|
||||
flash("Whoops, no images submitted : " + str(e), "error")
|
||||
return redirect(url_for("index"))
|
||||
|
||||
file = request.files["img"]
|
||||
# If the user does not select a file, the browser submits an
|
||||
# empty file without a filename.
|
||||
if file.filename == "":
|
||||
app.logger.error("Submitted file has no filename !")
|
||||
flash("Submitted file has no filename !", "error")
|
||||
return redirect(url_for("index"))
|
||||
|
||||
try:
|
||||
app.logger.debug("Sending the image to the printer.")
|
||||
web.print_image(file, sign)
|
||||
except RuntimeError as e:
|
||||
app.logger.error("The image could not be printed because : %s ", str(e))
|
||||
flash("The image could not be printed because : " + str(e), "error")
|
||||
return redirect(url_for("index"))
|
||||
|
||||
flash("Picture printed !", "info")
|
||||
return redirect(url_for("index"))
|
||||
|
||||
|
||||
# API routes
|
||||
# The api has the following methods
|
||||
# api/print/{sms,img,letter,qr,barcode}
|
||||
@@ -163,93 +252,110 @@ def api_index():
|
||||
@limiter.limit("6/minute", override_defaults=False)
|
||||
def api_print_sms():
|
||||
"""Prints a short message on a printer"""
|
||||
app.logger.debug("Printing an sms")
|
||||
app.logger.debug("Printing an sms via API")
|
||||
try:
|
||||
txt = request.form["txt"]
|
||||
except werkzeug.exceptions.BadRequestKeyError as e:
|
||||
app.logger.error("Whoops, we are missing the txt input field. : %s ", str(e))
|
||||
flash("Whoops, no forms submitted or missing signature : %s", str(e))
|
||||
return redirect(url_for("index"))
|
||||
|
||||
return str(e), 400
|
||||
try:
|
||||
# comment: We try to get a signature
|
||||
sign = request.form["signature"]
|
||||
except werkzeug.exceptions.BadRequestKeyError as e:
|
||||
app.logger.warning(
|
||||
"No signature found for this print, using default signature.", str(e)
|
||||
"No signature found for this print, using default signature. : %s", str(e)
|
||||
)
|
||||
sign = configuration_file["defaults"]["signature"]
|
||||
|
||||
web.print_sms(txt, sign)
|
||||
return redirect(url_for("index"))
|
||||
try:
|
||||
# comment: We try to print the SMS
|
||||
web.print_sms(txt, sign)
|
||||
except RuntimeError as e:
|
||||
return str(e), 500
|
||||
# end try
|
||||
return "OK", 200
|
||||
|
||||
|
||||
@app.route("/api/print/img", methods=["POST"])
|
||||
@limiter.limit("6/minute", override_defaults=False)
|
||||
def api_print_image():
|
||||
"""Prints an image on a printer"""
|
||||
app.logger.debug("Printing an image")
|
||||
app.logger.debug("Printing an image via API")
|
||||
|
||||
try:
|
||||
# comment: We try to get a signature
|
||||
sign = request.form["signature"]
|
||||
except werkzeug.exceptions.BadRequestKeyError as e:
|
||||
app.logger.warning(
|
||||
"No signature found for this print, using default signature.", str(e)
|
||||
"No signature found for this print, using default signature. %s", str(e)
|
||||
)
|
||||
sign = configuration_file["defaults"]["signature"]
|
||||
|
||||
if request.method == "POST":
|
||||
# check if the post request has the file part
|
||||
if "img" not in request.files:
|
||||
app.logger.error("Whoops, no images submitted : %s ", str(e))
|
||||
app.logger.error("Error getting the files : %s", str(e))
|
||||
flash("Whoops, no images submitted : %s", str(e))
|
||||
return redirect(url_for("index"))
|
||||
# check if the post request has the file part
|
||||
if "img" not in request.files:
|
||||
app.logger.error("Whoops, no images submitted.")
|
||||
return "No image submitted", 400
|
||||
|
||||
file = request.files["img"]
|
||||
# If the user does not select a file, the browser submits an
|
||||
# empty file without a filename.
|
||||
if file.filename == "":
|
||||
app.logger.error("Submitted file has no filename !")
|
||||
flash("Submitted file has no filename !")
|
||||
return redirect(url_for("index"))
|
||||
file = request.files["img"]
|
||||
# If the user does not select a file, the browser submits an
|
||||
# empty file without a filename.
|
||||
if file.filename == "":
|
||||
app.logger.error("Submitted file has no filename !")
|
||||
return "Submitted file has no filename !", 400
|
||||
|
||||
try:
|
||||
app.logger.debug("Sending the image to the printer.")
|
||||
web.print_image(file, sign)
|
||||
except Exception as e:
|
||||
app.logger.error("The image could not be printed because : %s ", str(e))
|
||||
flash("The image could not be printed because : %s ", str(e))
|
||||
return redirect(url_for("index"))
|
||||
try:
|
||||
app.logger.debug("Sending the image to the printer.")
|
||||
web.print_image(file, sign)
|
||||
except RuntimeError as e:
|
||||
return str(e), 500
|
||||
|
||||
else:
|
||||
app.logger.error("Method not allowed")
|
||||
flash("Method not allowed")
|
||||
return redirect(url_for("index"))
|
||||
|
||||
flash("Picture printed ! ")
|
||||
return redirect(url_for("index"))
|
||||
return "OK", 200
|
||||
|
||||
|
||||
@app.route("/api/camera/picture")
|
||||
@app.route("/api/camera/picture", methods=["GET"])
|
||||
def camera_picture():
|
||||
"""Returns a picture taken by the camera"""
|
||||
"""Returns a picture taken by the camera on a raspberry pi"""
|
||||
if RASPBERRY_PI_CONNECTED:
|
||||
try:
|
||||
return rpi.camera_picture()
|
||||
except Exception as e:
|
||||
except RuntimeError as e:
|
||||
return jsonify({"message": "Error getting the stream : " + e}), 500
|
||||
else:
|
||||
return jsonify({"message": "No camera present"}), 500
|
||||
|
||||
|
||||
@app.route("/api/queue", methods=["GET"])
|
||||
def api_queue_status():
|
||||
"""API endpoint for entire queue"""
|
||||
return jsonify(web.get_queue_state())
|
||||
|
||||
|
||||
@app.route("/api/worker", methods=["GET"])
|
||||
def api_worker_state():
|
||||
"""API endpoint to get the worker state"""
|
||||
return jsonify(worker.current_state())
|
||||
|
||||
|
||||
@app.route("/api/worker/start")
|
||||
def api_worker_start():
|
||||
worker.start_worker()
|
||||
return jsonify(worker.current_state())
|
||||
|
||||
|
||||
@app.route("/api/worker/stop")
|
||||
def api_worker_stop():
|
||||
worker.stop_worker()
|
||||
return jsonify(worker.current_state())
|
||||
|
||||
|
||||
## Authentification
|
||||
|
||||
|
||||
@app.route("/login")
|
||||
@limiter.limit("1/second", override_defaults=False)
|
||||
def login_page():
|
||||
"""Unsued, logins"""
|
||||
# web.login(username,password)
|
||||
return redirect(url_for("index"))
|
||||
return redirect(url_for("index")), 501
|
||||
|
||||
|
||||
@app.route("/logout")
|
||||
@@ -257,7 +363,7 @@ def login_page():
|
||||
def logout_page():
|
||||
"""Unused, logout"""
|
||||
# web.logout(username, password)
|
||||
return redirect(url_for("index"))
|
||||
return redirect(url_for("index")), 501
|
||||
|
||||
|
||||
@app.errorhandler(429)
|
||||
@@ -295,3 +401,7 @@ def camera_status():
|
||||
socketio.emit("camera_status", True)
|
||||
else:
|
||||
socketio.emit("camera_status", False)
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
app.run(debug=True, use_reloader=False, host="0.0.0.0", ssl_context="adhoc")
|
||||
|
||||
135
src/print_queue.py
Normal file
135
src/print_queue.py
Normal file
@@ -0,0 +1,135 @@
|
||||
"""
|
||||
This class has the method by which we manage the Tasks
|
||||
It's a printing queue, so we need to add, remove and get information on where
|
||||
the queue is
|
||||
"""
|
||||
|
||||
from collections import deque
|
||||
|
||||
# Because actually printing and adding new print job requests happen at
|
||||
# diffrent times, the print queue is managed by it's own thread.
|
||||
import threading
|
||||
|
||||
from datetime import datetime
|
||||
from task import TaskType
|
||||
|
||||
|
||||
class PrintQueue:
|
||||
"""
|
||||
A Double-ended Queue to manage the printing Tasks
|
||||
"""
|
||||
|
||||
def __init__(self, app):
|
||||
self.app = app
|
||||
self._queue = deque()
|
||||
self._lock = threading.Lock()
|
||||
self._completed_tasks = {} # Store completed task info
|
||||
self._task_counter = 0
|
||||
self.app.logger.debug("Created a new PrintQueue")
|
||||
|
||||
def __len__(self) -> int:
|
||||
return len(self._queue)
|
||||
|
||||
def enqueue(self, task):
|
||||
"""Add task to right of the queue and return position"""
|
||||
with self._lock:
|
||||
try:
|
||||
self.app.logger.info("Add task %s to queue ", task.task_id)
|
||||
self._queue.append(task)
|
||||
position = self._queue.index(task)
|
||||
# We return the current position of the task if it was added
|
||||
self.app.logger.debug(
|
||||
"Added a new task %s to the queue at position %s",
|
||||
task.task_id,
|
||||
position,
|
||||
)
|
||||
return position
|
||||
except Exception as e:
|
||||
self.app.logger.error("Could not add a task to the queue : %s ", e)
|
||||
raise e
|
||||
|
||||
def dequeue(self):
|
||||
"""Remove and return next task ( from the left of the queue ) (thread-safe)"""
|
||||
with self._lock:
|
||||
return self._queue.popleft() if len(self._queue) > 0 else None
|
||||
|
||||
def get_position(self, task):
|
||||
"""Get current position of task in queue (1-indexed)"""
|
||||
with self._lock:
|
||||
if task.task_id in self._completed_tasks:
|
||||
return None # Task already completed
|
||||
|
||||
try:
|
||||
# Try to get the position of a Task
|
||||
return self._queue.index(task)
|
||||
except ValueError as e:
|
||||
raise e
|
||||
# end try
|
||||
|
||||
def is_empty(self):
|
||||
"""Check if queue is empty"""
|
||||
with self._lock:
|
||||
self.app.logger.debug("Checking if queue is empty")
|
||||
return len(self._queue) == 0
|
||||
|
||||
def get_queue_state(self):
|
||||
"""Return current queue state"""
|
||||
with self._lock:
|
||||
self.app.logger.debug("Return current queue state")
|
||||
return [{"task_id": t.task_id, "status": t.status} for t in self._queue]
|
||||
|
||||
def get_status(self, task_id):
|
||||
"""Get full status info for a task"""
|
||||
with self._lock:
|
||||
|
||||
if task_id in self._completed_tasks:
|
||||
return self._completed_tasks[task_id]
|
||||
|
||||
# Check in queue if it exists
|
||||
for index, task in enumerate(self._queue):
|
||||
if task.task_id == task_id:
|
||||
# Depending on it's type, we return more info
|
||||
if task.task_type == TaskType.IMAGE:
|
||||
return {
|
||||
"task_id": task_id,
|
||||
"status": task.status,
|
||||
"type": task.task_type,
|
||||
"position": index,
|
||||
"in_queue": True,
|
||||
"content": task.content,
|
||||
"signature": task.signature,
|
||||
}
|
||||
|
||||
if task.task_type == TaskType.TEXT:
|
||||
return {
|
||||
"task_id": task_id,
|
||||
"status": task.status,
|
||||
"type": task.task_type,
|
||||
"position": index,
|
||||
"in_queue": True,
|
||||
"image_path": str(task.image_path),
|
||||
"signature": task.signature,
|
||||
"process": str(task.process),
|
||||
}
|
||||
|
||||
if task.task_type == TaskType.CUT:
|
||||
return {
|
||||
"task_id": task_id,
|
||||
"status": task.status,
|
||||
"type": task.task_type,
|
||||
"position": index,
|
||||
"in_queue": True,
|
||||
}
|
||||
|
||||
return None
|
||||
|
||||
def mark_completed(self, task_id, task_status):
|
||||
"""Mark task as completed and remove from queue"""
|
||||
with self._lock:
|
||||
self._completed_tasks[task_id] = {
|
||||
"task_id": task_id,
|
||||
"status": task_status,
|
||||
"position": None,
|
||||
"in_queue": False,
|
||||
"completed_at": datetime.now().isoformat(),
|
||||
}
|
||||
221
src/printer.py
221
src/printer.py
@@ -1,10 +1,14 @@
|
||||
# Importing the module to manage the connection to the printer.
|
||||
import escpos.printer as escp
|
||||
from time import sleep, gmtime, strftime
|
||||
|
||||
# import brother_ql
|
||||
from time import sleep
|
||||
import os.path
|
||||
from PIL import Image, ImageEnhance, ImageOps
|
||||
|
||||
from PIL import Image, ImageEnhance
|
||||
import numpy as np
|
||||
|
||||
# Importing the module to manage the connection to the printer.
|
||||
import escpos.printer
|
||||
|
||||
|
||||
class Printer(object):
|
||||
"""
|
||||
@@ -38,7 +42,9 @@ class Printer(object):
|
||||
self.usb_args["idProduct"] = self.vendor_id
|
||||
|
||||
def check_paper(self) -> bool:
|
||||
# Let's check paper status
|
||||
"""
|
||||
On printers that support it, we check that the printer has paper
|
||||
"""
|
||||
self.app.logger.debug("Checking paper status...")
|
||||
self.printer.open(self.usb_args)
|
||||
status = self.printer.paper_status()
|
||||
@@ -46,7 +52,7 @@ class Printer(object):
|
||||
case 0:
|
||||
self.app.logger.error("Printer has no more paper, aborting...")
|
||||
self.printer.close()
|
||||
raise Exception("No more paper in the printer")
|
||||
raise RuntimeError("No more paper in the printer")
|
||||
case 1:
|
||||
self.app.logger.warning(
|
||||
"Printer needs paper to be changed very soon ! "
|
||||
@@ -57,19 +63,30 @@ class Printer(object):
|
||||
self.printer.close()
|
||||
|
||||
def init_printer(self):
|
||||
"""
|
||||
Check if the printer online ? Is the communication with the printer successfull ?
|
||||
"""
|
||||
|
||||
# TODO: This could happen directly when creating a new Printer class
|
||||
if os.getenv("FLASK_DEBUG"):
|
||||
waiting_elapsed = 15
|
||||
else:
|
||||
waiting_elapsed = 10
|
||||
|
||||
# Is the printer online ? Is the communication with the printer successfull ?
|
||||
waiting_elapsed = 30
|
||||
self.app.logger.debug("Waiting for printer to get online...")
|
||||
|
||||
while not self.ready:
|
||||
try:
|
||||
# This also calls open(), which we need to close()
|
||||
# or else the device will appear as busy.
|
||||
p = escp.Usb(self.device_id, self.vendor_id, 0, profile="TM-P80")
|
||||
p = escpos.printer.Usb(
|
||||
self.device_id, self.vendor_id, 0, profile="TM-P80"
|
||||
)
|
||||
except Exception as e:
|
||||
self.app.logger.error(
|
||||
"The USB device is not plugged in, trying again : " + str(e)
|
||||
"The USB device is not plugged in, trying again %s : %s",
|
||||
waiting_elapsed,
|
||||
str(e),
|
||||
)
|
||||
pass
|
||||
|
||||
@@ -78,6 +95,11 @@ class Printer(object):
|
||||
self.ready = True
|
||||
self.app.logger.debug("Printer online !")
|
||||
except Exception as e:
|
||||
self.app.logger.error(
|
||||
"Error while getting the printer online %s : %s",
|
||||
waiting_elapsed,
|
||||
str(e),
|
||||
)
|
||||
pass
|
||||
|
||||
sleep(1)
|
||||
@@ -115,10 +137,19 @@ class Printer(object):
|
||||
|
||||
return True
|
||||
|
||||
def print_sms(self, msg, signature="", bold=False):
|
||||
def _print_sms(self, msg, signature="", bold=False):
|
||||
|
||||
if not isinstance(msg, str):
|
||||
self.app.logger.error(
|
||||
"It is not possible to print a " + str(type(msg)) + ", only strings."
|
||||
)
|
||||
raise ValueError
|
||||
|
||||
# We make sure that the signature is not something too goofy
|
||||
clean_msg = str(msg) + "\n"
|
||||
clean_signature = str(signature)
|
||||
|
||||
# Make checks on the size of the message being printed
|
||||
if len(clean_msg) > 4096:
|
||||
self.app.logger.warning(
|
||||
"Could not print message of this length: " + str(len(clean_msg))
|
||||
@@ -139,6 +170,8 @@ class Printer(object):
|
||||
+ ", needs to be below 256 caracters long."
|
||||
)
|
||||
|
||||
# Do the actual printing
|
||||
# We would pop the next element in the queue here, if it's a sms type
|
||||
try:
|
||||
self.printer.open(self.usb_args)
|
||||
self.printer.set(align="center", font="a", bold=bold)
|
||||
@@ -148,18 +181,21 @@ class Printer(object):
|
||||
self.printer.close()
|
||||
except Exception as e:
|
||||
self.app.logger.error("Unable to print because : " + str(e))
|
||||
raise RuntimeError(
|
||||
"Unable to print a SMS, the printer couldn't do it."
|
||||
) from e
|
||||
|
||||
self.app.logger.info("Printed text")
|
||||
return True
|
||||
|
||||
def print_img(self, path, sign="", center=True, process=False):
|
||||
clean_signature = str(sign)
|
||||
def _print_img(self, path, signature="", center=True, process=False):
|
||||
clean_signature = str(signature)
|
||||
|
||||
if len(sign) > 256:
|
||||
if len(signature) > 256:
|
||||
self.app.logger.warning(
|
||||
"Could not print signature of this length: " + str(len(clean_signature))
|
||||
)
|
||||
raise Exception(
|
||||
raise ValueError(
|
||||
"Could not print signature of this length :"
|
||||
+ str(len(clean_signature))
|
||||
+ ", needs to be below 256 caracters long."
|
||||
@@ -167,7 +203,7 @@ class Printer(object):
|
||||
|
||||
if not os.path.isfile(str(path)):
|
||||
self.app.logger.warning("File does not exist : " + str(path))
|
||||
raise Exception(
|
||||
raise OSError(
|
||||
"The file path for this image :"
|
||||
+ str(path)
|
||||
+ " wasn't found. Please try again."
|
||||
@@ -178,29 +214,44 @@ class Printer(object):
|
||||
if process:
|
||||
try:
|
||||
self.app.logger.debug("Proccessing the image")
|
||||
path = process_image(self, path)
|
||||
except Exception as e:
|
||||
self.app.logger.error(str(e))
|
||||
return False
|
||||
path = _process_image(self, path)
|
||||
except RuntimeError as e:
|
||||
self.app.logger.error(
|
||||
"Error while processing the image, aborting print : %s", str(e)
|
||||
)
|
||||
raise e
|
||||
else:
|
||||
self.app.logger.warning("Not proccessing the image")
|
||||
|
||||
try:
|
||||
self.printer.open(self.usb_args)
|
||||
self.printer.image(path, center=center)
|
||||
self.printer.textln(signature)
|
||||
self.printer.close()
|
||||
self.app.logger.debug("Printed an image : " + str(path))
|
||||
os.remove(path)
|
||||
self.app.logger.debug("Removed image : " + str(path))
|
||||
except Exception as e:
|
||||
self.printer.close()
|
||||
self.app.logger.error(str(e))
|
||||
return False
|
||||
raise RuntimeError("Could not print the picture") from e
|
||||
finally:
|
||||
try:
|
||||
os.remove(path)
|
||||
except OSError as e:
|
||||
raise e
|
||||
|
||||
self.app.logger.debug("Removed image : " + str(path))
|
||||
|
||||
try:
|
||||
self.printer.close()
|
||||
except Exception as e:
|
||||
self.app.logger.error(
|
||||
"Could not close the printer connexion %s", str(e)
|
||||
)
|
||||
raise RuntimeError("Could not close the printer connexion. ") from e
|
||||
|
||||
self.app.logger.info("Printed a picture")
|
||||
return True
|
||||
|
||||
def qr(self, content):
|
||||
def _qr(self, content):
|
||||
try:
|
||||
self.printer.open(self.usb_args)
|
||||
self.printer.qr(content, center=True)
|
||||
@@ -213,7 +264,7 @@ class Printer(object):
|
||||
self.app.logger.info("Printed a QR")
|
||||
return True
|
||||
|
||||
def cut(self):
|
||||
def _cut(self):
|
||||
try:
|
||||
self.printer.open(self.usb_args)
|
||||
self.printer.cut()
|
||||
@@ -226,8 +277,22 @@ class Printer(object):
|
||||
self.app.logger.info("Did a cut")
|
||||
return True
|
||||
|
||||
def print_task(self, task_type, data):
|
||||
"""Execute actual print based on task type"""
|
||||
match (task_type.value):
|
||||
case "text":
|
||||
self._print_sms(data["txt"], signature=data["sign"])
|
||||
case "image":
|
||||
self._print_img(
|
||||
data["img"], signature=data["sign"], process=data["process"]
|
||||
)
|
||||
case "cut":
|
||||
self._cut()
|
||||
case _:
|
||||
raise RuntimeError("This task type is not supported")
|
||||
|
||||
def process_image(self, path):
|
||||
|
||||
def _process_image(self, path):
|
||||
brightness_factor = 1.5 # Used only if image is too dark
|
||||
brightness_threshold = 100 # Brightness threshold (0–255)
|
||||
contrast_factor = 0.6 # Less than 1.0 = lower contrast
|
||||
@@ -241,7 +306,7 @@ def process_image(self, path):
|
||||
original_img = original_img.convert("RGB")
|
||||
|
||||
# Resize while maintaining aspect ratio
|
||||
original_img.thumbnail((max_width, max_height), Image.LANCZOS)
|
||||
original_img.thumbnail((max_width, max_height), Image.Resampling.LANCZOS)
|
||||
self.app.logger.debug("Resized the image")
|
||||
|
||||
# # Convert to grayscale for dithering
|
||||
@@ -273,16 +338,100 @@ def process_image(self, path):
|
||||
# contrast_enhancer = ImageEnhance.Contrast(original_img)
|
||||
# original_img = contrast_enhancer.enhance(contrast_factor)
|
||||
|
||||
# Final resize check
|
||||
if original_img.height > max_height:
|
||||
raise ValueError("Image is too long, sorry! Keep it below 575×1000 pixels.")
|
||||
self.app.logger.error(
|
||||
"Image is too long, sorry! Keep it below 575×1000 pixels."
|
||||
)
|
||||
return False
|
||||
|
||||
# Convert to JPEG and save
|
||||
jpeg_path = os.path.splitext(path)[0] + "_processed.jpg"
|
||||
original_img.save(jpeg_path, format="JPEG", quality=95, optimize=True)
|
||||
self.app.logger.debug("Processed and saved image.")
|
||||
|
||||
return jpeg_path
|
||||
|
||||
|
||||
def discover_printers():
|
||||
"""
|
||||
We try to find all the connected printers ( 0 or n ) to this system.
|
||||
|
||||
For every type of supported printer, we try to autodiscover them.
|
||||
|
||||
http://www.linux-usb.org/usb.ids A list of USB vendor IDs
|
||||
|
||||
04b8 Seiko Epson Corp.
|
||||
04f9 Brother Industries, Ltd
|
||||
"""
|
||||
|
||||
|
||||
def find_and_parse_borther_ql_printer():
|
||||
|
||||
## We might be able to no use this because there is a `discover` command in https://github.com/pklaus/brother_ql#usage
|
||||
|
||||
## Code stolen from https://framagit.org/stickoeur/diagnostickoeur/-/blob/no-masters/printit.py?ref_type=heads
|
||||
|
||||
"""Find and parse Brother QL printer information."""
|
||||
|
||||
model_manager = ModelsManager()
|
||||
|
||||
# Debug print to show we're searching
|
||||
# print("Searching for Brother QL printer...")
|
||||
|
||||
for backend_name in ["pyusb", "linux_kernel"]:
|
||||
try:
|
||||
# print(f"Trying backend: {backend_name}")
|
||||
backend = backend_factory(backend_name)
|
||||
available_devices = backend["list_available_devices"]()
|
||||
# print(f"Found {len(available_devices)} devices with {backend_name} backend")
|
||||
|
||||
for printer in available_devices:
|
||||
# print(f"Found device: {printer}")
|
||||
identifier = printer["identifier"]
|
||||
parts = identifier.split("/")
|
||||
|
||||
if len(parts) < 4:
|
||||
# print(f"Skipping device with invalid identifier format: {identifier}")
|
||||
continue
|
||||
|
||||
protocol = parts[0]
|
||||
device_info = parts[2]
|
||||
serial_number = parts[3]
|
||||
|
||||
try:
|
||||
vendor_id, product_id = device_info.split(":")
|
||||
except ValueError:
|
||||
# print(f"Invalid device info format: {device_info}")
|
||||
continue
|
||||
|
||||
# Default model
|
||||
model = "QL-570"
|
||||
|
||||
# Try to match product ID to determine actual model
|
||||
try:
|
||||
product_id_int = int(product_id, 16)
|
||||
for m in model_manager.iter_elements():
|
||||
if m.product_id == product_id_int:
|
||||
model = m.identifier
|
||||
break
|
||||
# print(f"Matched printer model: {model}")
|
||||
except ValueError:
|
||||
# print(f"Invalid product ID format: {product_id}")
|
||||
continue
|
||||
|
||||
printer_info = {
|
||||
"identifier": identifier,
|
||||
"backend": backend_name,
|
||||
"model": model,
|
||||
"protocol": protocol,
|
||||
"vendor_id": vendor_id,
|
||||
"product_id": product_id,
|
||||
"serial_number": serial_number,
|
||||
}
|
||||
# print(f"Found printer: {printer_info}")
|
||||
return printer_info
|
||||
|
||||
except Exception as e:
|
||||
# print(f"Error with backend {backend_name}: {str(e)}")
|
||||
continue
|
||||
|
||||
print("No Brother QL printer found")
|
||||
return None
|
||||
|
||||
|
||||
def fint_and_parse_epson_printer():
|
||||
pass
|
||||
|
||||
@@ -1,13 +1,12 @@
|
||||
from flask_socketio import SocketIO
|
||||
from gpiozero import Button, LED, DigitalOutputDevice
|
||||
from time import sleep, gmtime, strftime
|
||||
from PIL import Image
|
||||
import io # To check if we are on a Raspberry Pi
|
||||
import subprocess
|
||||
import os
|
||||
from time import sleep, gmtime, strftime
|
||||
from flask_socketio import SocketIO
|
||||
from gpiozero import Button, LED, DigitalOutputDevice
|
||||
from PIL import Image
|
||||
|
||||
|
||||
class Raspberry(object):
|
||||
class Raspberry():
|
||||
"""
|
||||
This class will manage three things :
|
||||
- Connecting to a USB webcam
|
||||
|
||||
@@ -255,7 +255,12 @@ function print_picture(data){
|
||||
// headers:{
|
||||
// 'Content-Type': 'multipart/form-data'
|
||||
// }
|
||||
}).then(function(response) { console.log('Success:', response); } , true)
|
||||
}).then(function(response) {
|
||||
console.log('Reponse:', response);
|
||||
if(response.status != 200 ){
|
||||
alert("The picture could not be printed be : " + response.statusText)
|
||||
}
|
||||
} , true)
|
||||
.catch(error => console.error('Error:', error), false);
|
||||
|
||||
}
|
||||
|
||||
99
src/task.py
Normal file
99
src/task.py
Normal file
@@ -0,0 +1,99 @@
|
||||
"""
|
||||
Here we define the types of tasks
|
||||
We are using Abstract Base Classes,
|
||||
like this we can define types of tasks ( text, images, ... )
|
||||
that all work with the same basic options
|
||||
|
||||
The tasks are going to be injected into a Queue.
|
||||
It's a usefull way of storing information in our
|
||||
program, while making sure that things are indeed printed.
|
||||
It's also a way to prevent two concurrent connexions creating
|
||||
a access conflict on a single printer, like two people wanting
|
||||
to print at the same time.
|
||||
|
||||
We can also delay and store printing tasks until a printer becomes
|
||||
available if none is online.
|
||||
"""
|
||||
from abc import ABC, abstractmethod
|
||||
|
||||
## See https://docs.python.org/3/library/abc.html to learn more about this
|
||||
|
||||
# from dataclasses import dataclass
|
||||
from enum import Enum
|
||||
import uuid
|
||||
|
||||
|
||||
## You can expand this if you want to take other types of tasks into account
|
||||
class TaskType(Enum):
|
||||
"""
|
||||
The different tasks supported by the printers
|
||||
"""
|
||||
TEXT = "text"
|
||||
IMAGE = "image"
|
||||
CUT = "cut"
|
||||
|
||||
|
||||
class PrintTask(ABC):
|
||||
"""
|
||||
A print task holds information about what we are looking to print.
|
||||
"""
|
||||
|
||||
def __init__(self, task_type):
|
||||
self.task_id = self._generate_id()
|
||||
self.task_type = task_type
|
||||
self.status = "pending" # pending, processing, completed, failed
|
||||
|
||||
print("Created a new " + str(self.task_type) + " with ID " + self.task_id)
|
||||
|
||||
@abstractmethod
|
||||
def get_print_data(self):
|
||||
"""Return data formatted for printer"""
|
||||
|
||||
|
||||
def _generate_id(self):
|
||||
# Generate unique task ID
|
||||
return str(uuid.uuid4())
|
||||
|
||||
|
||||
class TextTask(PrintTask):
|
||||
"""
|
||||
This tasks represents a texte content, and it's signature.
|
||||
"""
|
||||
|
||||
def __init__(self, content, signature):
|
||||
super().__init__(TaskType.TEXT)
|
||||
self.content = content
|
||||
self.signature = signature
|
||||
|
||||
def get_print_data(self):
|
||||
return {"txt": self.content, "sign": self.signature}
|
||||
|
||||
|
||||
class ImageTask(PrintTask):
|
||||
"""
|
||||
This tasks represents a image content ( in the form of it's path ), and it's signature.
|
||||
"""
|
||||
|
||||
def __init__(self, image_path, signature, process):
|
||||
super().__init__(TaskType.IMAGE)
|
||||
self.image_path = image_path
|
||||
self.signature = signature
|
||||
self.process = process
|
||||
|
||||
def get_print_data(self):
|
||||
# Return image data in printer-compatible format
|
||||
return {"img": self.image_path, "sign": self.signature, "process": self.process}
|
||||
|
||||
|
||||
class CutTask(PrintTask):
|
||||
"""
|
||||
This class activates the cutter on the printer if it exists
|
||||
"""
|
||||
|
||||
def __init__(self):
|
||||
super().__init__(TaskType.CUT)
|
||||
|
||||
# There is no print data,
|
||||
# the task existence in itself is indication of what to do
|
||||
def get_print_data(self):
|
||||
return None
|
||||
@@ -5,7 +5,7 @@
|
||||
<div class="card">
|
||||
<h3 class="card-header">Print a short message</h3>
|
||||
<div class="card-body">
|
||||
<form class="form-group" action="/api/print/sms" method="post">
|
||||
<form class="form-group" action="/web/print/sms" method="post">
|
||||
<input class="form-control" type="text" name="txt" placeholder="200 chars or less " maxlength="200" required><br>
|
||||
<input class="form-control" type="text" name="signature" placeholder="Signature or pseudo" maxlength="200"><br>
|
||||
<input class="btn btn-primary float-right" type="submit" value="Imprimer" name="imprimer">
|
||||
@@ -18,7 +18,7 @@
|
||||
<div class="card">
|
||||
<h3 class="card-header">Print an image</h3>
|
||||
<div class="card-body">
|
||||
<form enctype="multipart/form-data" class="form-group" action="/api/print/img" method="post">
|
||||
<form enctype="multipart/form-data" class="form-group" action="/web/print/img" method="post">
|
||||
<input class="form-control" type="file" name="img" required><br>
|
||||
<input class="form-control" type="text" name="signature" placeholder="Signature or pseudo" maxlength="200"><br>
|
||||
<input class="btn btn-primary float-right" type="submit" value="Imprimer" name="imprimer">
|
||||
|
||||
70
src/user.py
70
src/user.py
@@ -1,41 +1,41 @@
|
||||
class User(object):
|
||||
"""docstring for User."""
|
||||
# class User(object):
|
||||
# """docstring for User."""
|
||||
|
||||
def __init__(self, arg):
|
||||
super(User, self).__init__()
|
||||
self.arg = arg
|
||||
# def __init__(self, arg):
|
||||
# super(User, self).__init__()
|
||||
# self.arg = arg
|
||||
|
||||
|
||||
# @app.route('/login', methods=['POST','GET'])
|
||||
# @limiter.limit("100 per minute", error_message=error_handler_limiter)
|
||||
def login():
|
||||
if request.method == "POST":
|
||||
if not session.get("logged_in"):
|
||||
if request.form["username"] and request.form["password"]:
|
||||
# Get the json
|
||||
with open("users.json") as f:
|
||||
users_file = json.load(f)
|
||||
for user in users_file["users"]:
|
||||
if users_file["users"][user] == request.form["password"]:
|
||||
session["logged_in"] = True
|
||||
session["user"] = request.form["username"]
|
||||
# # @app.route('/login', methods=['POST','GET'])
|
||||
# # @limiter.limit("100 per minute", error_message=error_handler_limiter)
|
||||
# def login():
|
||||
# if request.method == "POST":
|
||||
# if not session.get("logged_in"):
|
||||
# if request.form["username"] and request.form["password"]:
|
||||
# # Get the json
|
||||
# with open("users.json") as f:
|
||||
# users_file = json.load(f)
|
||||
# for user in users_file["users"]:
|
||||
# if users_file["users"][user] == request.form["password"]:
|
||||
# session["logged_in"] = True
|
||||
# session["user"] = request.form["username"]
|
||||
|
||||
if not session.get("logged_in"):
|
||||
flash("Mot de passe ou pseudo invalide.", "danger")
|
||||
return redirect(url_for("login"))
|
||||
else:
|
||||
return redirect(url_for("display_index_page"))
|
||||
else:
|
||||
flash("Incorrect logins")
|
||||
return render_template("password.html")
|
||||
else:
|
||||
return render_template("password.html")
|
||||
else:
|
||||
return render_template("password.html")
|
||||
# if not session.get("logged_in"):
|
||||
# flash("Mot de passe ou pseudo invalide.", "danger")
|
||||
# return redirect(url_for("login"))
|
||||
# else:
|
||||
# return redirect(url_for("display_index_page"))
|
||||
# else:
|
||||
# flash("Incorrect logins")
|
||||
# return render_template("password.html")
|
||||
# else:
|
||||
# return render_template("password.html")
|
||||
# else:
|
||||
# return render_template("password.html")
|
||||
|
||||
|
||||
@app.route("/logout")
|
||||
def logout():
|
||||
session["logged_in"] = False
|
||||
flash("Tu est déconnecté", "info")
|
||||
return redirect(url_for("login"))
|
||||
# @app.route("/logout")
|
||||
# def logout():
|
||||
# session["logged_in"] = False
|
||||
# flash("Tu est déconnecté", "info")
|
||||
# return redirect(url_for("login"))
|
||||
|
||||
129
src/web.py
129
src/web.py
@@ -1,56 +1,77 @@
|
||||
from flask import Flask, request, flash
|
||||
from flask import flash
|
||||
from werkzeug.utils import secure_filename
|
||||
from printer import Printer
|
||||
import time
|
||||
import os
|
||||
from task import TextTask, ImageTask, CutTask
|
||||
|
||||
|
||||
class Web(object):
|
||||
"""docstring for web."""
|
||||
"""Web is the class that gets all of the information from web calls ( API and Web page ) and provides checks before sending stuff to printing"""
|
||||
|
||||
def __init__(self, app, printer):
|
||||
def __init__(self, app, print_queue):
|
||||
super(Web).__init__()
|
||||
self.printer = printer
|
||||
self.print_queue = print_queue
|
||||
self.app = app
|
||||
|
||||
def print_sms(self, texte, sign: str):
|
||||
# TODO: verify the texte before printing it here ?
|
||||
def print_sms(self, texte, sign: str) -> bool:
|
||||
"""
|
||||
Get text and a signature, prints the text and cuts after that.
|
||||
"""
|
||||
self.app.logger.debug("Printing : " + str(texte) + " from " + str(sign))
|
||||
|
||||
try:
|
||||
self.printer.print_sms(texte, sign)
|
||||
self.printer.cut()
|
||||
# We create two new tasks and add them directly to the queue
|
||||
# TODO: this might need to be improved because
|
||||
# !! there is no garantee !! that both the SMS task and the Cut task
|
||||
# are added back to back, another task could be
|
||||
# inserted between the two.
|
||||
sms = self.print_queue.enqueue(TextTask(content=texte, signature=sign))
|
||||
cut = self.print_queue.enqueue(CutTask())
|
||||
except Exception as e:
|
||||
self.app.logger.error(e)
|
||||
flash("Error while printing the SMS : " + str(e))
|
||||
raise RuntimeError("Could not add SMS to queue, " + str(e)) from e
|
||||
self.app.logger.info("Added two new tasks at position %s and %s", sms, cut)
|
||||
return True
|
||||
|
||||
flash("You message " + str(texte) + " has been printed :)")
|
||||
|
||||
def print_image(self, image, sign):
|
||||
self.app.logger.debug("Uploading file")
|
||||
def print_image(self, image, sign: str) -> bool:
|
||||
"""
|
||||
Get an image and a signature, prints the image and cuts after that.
|
||||
"""
|
||||
try:
|
||||
self.app.logger.debug("Uploading file from " + str(sign))
|
||||
if self.upload_file(image):
|
||||
self.app.logger.debug("File has been uploaded, printing...")
|
||||
self.printer.print_img(
|
||||
os.path.join(
|
||||
self.app.config["UPLOAD_FOLDER"],
|
||||
secure_filename(image.filename),
|
||||
),
|
||||
sign=sign,
|
||||
process=True,
|
||||
file_uploaded = self.upload_file(image)
|
||||
except Exception as e:
|
||||
self.app.logger.error(e)
|
||||
raise RuntimeError("Could not upload file") from e
|
||||
|
||||
if file_uploaded:
|
||||
self.app.logger.debug("File has been uploaded, printing...")
|
||||
try:
|
||||
img = self.print_queue.enqueue(
|
||||
ImageTask(
|
||||
os.path.join(
|
||||
self.app.config["UPLOAD_FOLDER"],
|
||||
secure_filename(image.filename),
|
||||
),
|
||||
signature=sign,
|
||||
process=True,
|
||||
)
|
||||
)
|
||||
self.printer.cut()
|
||||
except Exception as e:
|
||||
self.app.logger.error(e)
|
||||
flash("Could not upload file." + str(e))
|
||||
|
||||
flash("Your image has been printed :)")
|
||||
cut = self.print_queue.enqueue(CutTask())
|
||||
except Exception as e:
|
||||
raise RuntimeError("Could not add IMG to queue" + str(e)) from e
|
||||
|
||||
def login(username: str, password: str) -> bool:
|
||||
pass
|
||||
self.app.logger.info("Added two new tasks at position %s and %s", img, cut)
|
||||
|
||||
def logout(username: str, password: str) -> bool:
|
||||
pass
|
||||
return True
|
||||
|
||||
def login(self, username: str, password: str) -> bool:
|
||||
"""Not implemented"""
|
||||
return
|
||||
|
||||
def logout(self, username: str, password: str) -> bool:
|
||||
"""Not implemented"""
|
||||
return
|
||||
|
||||
def allowed_file(self, filename) -> bool:
|
||||
self.app.logger.debug("Is the filename allowed ?")
|
||||
@@ -62,22 +83,32 @@ class Web(object):
|
||||
|
||||
def upload_file(self, image) -> bool:
|
||||
self.app.logger.debug("Validating file")
|
||||
if image and self.allowed_file(image.filename):
|
||||
filename = secure_filename(image.filename)
|
||||
self.app.logger.debug("File valid")
|
||||
try:
|
||||
image.save(os.path.join(self.app.config["UPLOAD_FOLDER"], filename))
|
||||
self.app.logger.debug("File saved")
|
||||
except Exception as e:
|
||||
self.app.logger.error("Could not save file")
|
||||
flash(str(e), "error")
|
||||
return False
|
||||
if image:
|
||||
if self.allowed_file(image.filename):
|
||||
filename = secure_filename(image.filename)
|
||||
self.app.logger.debug("File valid")
|
||||
try:
|
||||
image.save(os.path.join(self.app.config["UPLOAD_FOLDER"], filename))
|
||||
except OSError as e:
|
||||
self.app.logger.error("Could not save file %s", e)
|
||||
return False
|
||||
|
||||
self.app.logger.debug(
|
||||
"File saved to "
|
||||
+ str(os.path.join(self.app.config["UPLOAD_FOLDER"], filename))
|
||||
)
|
||||
return True
|
||||
self.app.logger.debug(
|
||||
"File saved to "
|
||||
+ str(os.path.join(self.app.config["UPLOAD_FOLDER"], filename))
|
||||
)
|
||||
return True
|
||||
else:
|
||||
self.app.logger.error(
|
||||
"Could not save file because the filename is forbidden"
|
||||
)
|
||||
return False
|
||||
else:
|
||||
self.app.logger.error("Could not save file " + str(filename))
|
||||
self.app.logger.error(
|
||||
"Could not save file, it seems to be null ? : " + str(filename)
|
||||
)
|
||||
return False
|
||||
|
||||
def get_queue_state(self):
|
||||
"""Return current queue state"""
|
||||
return self.print_queue.get_queue_state()
|
||||
|
||||
107
src/worker.py
Normal file
107
src/worker.py
Normal file
@@ -0,0 +1,107 @@
|
||||
# This is the main printing thread
|
||||
# As explained in the task file, this is where we command
|
||||
# printing to happen.
|
||||
|
||||
import threading
|
||||
import time
|
||||
|
||||
|
||||
class PrintWorker(threading.Thread):
|
||||
def __init__(self, app, print_queue, printer, socketio=None):
|
||||
super().__init__(daemon=True)
|
||||
self.app = app
|
||||
self.print_queue = print_queue
|
||||
self.printer = printer
|
||||
self.socketio = socketio # Optional
|
||||
self.running = True
|
||||
self.state = "idle" # idle, printing, dead, drinking-a-beer
|
||||
|
||||
self.app.logger.debug("Ho great, I'm alive... I'm ready to work another day...")
|
||||
|
||||
def run(self):
|
||||
"""Background thread that processes queue items"""
|
||||
self.app.logger.info("Worker started working.")
|
||||
while True:
|
||||
if not self.running or not self.printer.ready:
|
||||
time.sleep(0.2)
|
||||
continue
|
||||
|
||||
try:
|
||||
task = self.print_queue.dequeue()
|
||||
except Exception as e:
|
||||
self.app.logger.error("Could not get a new task ! %s ", str(e))
|
||||
raise RuntimeError(
|
||||
"We could not get a new task because " + str(e)
|
||||
) from e
|
||||
|
||||
if task:
|
||||
try:
|
||||
self.app.logger.info("Got a new task")
|
||||
self.app.logger.debug("Got task %s", task.task_id)
|
||||
self.state = "printing"
|
||||
task.status = "processing"
|
||||
self._emit_status(task.task_id, "processing")
|
||||
|
||||
print_data = task.get_print_data()
|
||||
try:
|
||||
self.printer.print_task(task.task_type, print_data)
|
||||
except RuntimeError as e:
|
||||
self.app.logger.error("Could not print : %s", str(e))
|
||||
raise e
|
||||
|
||||
task.status = "completed"
|
||||
self.print_queue.mark_completed(task.task_id, "completed")
|
||||
self._emit_status(task.task_id, "completed")
|
||||
|
||||
except RuntimeError as e:
|
||||
task.status = "failed"
|
||||
self.print_queue.mark_completed(task.task_id, "failed")
|
||||
self._emit_status(task.task_id, "failed", error=str(e))
|
||||
print(f"Print task {task.task_id} failed: {e}")
|
||||
else:
|
||||
# When they are no new tasks to handle, we put the thread to sleep.
|
||||
self.state = "idle"
|
||||
time.sleep(0.1)
|
||||
|
||||
def _emit_status(self, task_id, status, error=None):
|
||||
"""Emit status update via Socket.IO if available"""
|
||||
if not self.socketio:
|
||||
return
|
||||
|
||||
room = f"task_{task_id}"
|
||||
data = {
|
||||
"task_id": task_id,
|
||||
"status": status,
|
||||
"position": None, # Task no longer in queue
|
||||
}
|
||||
|
||||
if error:
|
||||
data["error"] = error
|
||||
|
||||
self.socketio.emit("task_status", data, room=room)
|
||||
|
||||
def stop_worker(self):
|
||||
"""
|
||||
Give the worker a break
|
||||
"""
|
||||
self.app.logger.debug("Giving the worker a break")
|
||||
self.state = "drinking-a-beer"
|
||||
self.running = False
|
||||
|
||||
def start_worker(self):
|
||||
"""
|
||||
Get the worker back to it
|
||||
"""
|
||||
self.app.logger.debug("Time to work !")
|
||||
self.state = "idle"
|
||||
self.running = True
|
||||
|
||||
def current_state(self):
|
||||
"""
|
||||
Return the worker state
|
||||
"""
|
||||
return {
|
||||
"is_running": self.running,
|
||||
"queue_size": len(self.print_queue),
|
||||
"state": self.state,
|
||||
}
|
||||
Reference in New Issue
Block a user