forked from hswaw/labelmaker
updated python script to use printservant instead of local lpr
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f1dbd2b0b1
commit
e563f01c72
3 changed files with 16 additions and 63 deletions
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@ -36,11 +36,12 @@ RUN apt-get update && apt-get upgrade -y \
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&& apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false \
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&& apt-get clean -y && rm -rf /var/lib/apt/lists/*
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WORKDIR /labelmaker
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COPY ./poetry.lock ./pyproject.toml /labelmaker/
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RUN git clone https://code.hackerspace.pl/etorameth/labelmaker
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WORKDIR /labelmaker
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RUN poetry install --no-interaction --no-ansi --sync
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COPY . /labelmaker
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RUN useradd web
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USER web
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CMD poetry run python labelmaker/__main__.py
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CMD poetry run python labelmaker/main.py
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@ -6,14 +6,15 @@ import time
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import cairocffi as cairo
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import flask
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import img2pdf
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import pangocffi as pango
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import pangocairocffi as pangocairo
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import requests
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class App(flask.Flask):
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def __init__(self, *args, **kwargs):
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super(App, self).__init__(*args, **kwargs)
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self.last = 0
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self.health = (0, False, "unknown")
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app = App(__name__)
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@ -73,68 +74,33 @@ class Renderer(object):
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def index():
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return flask.render_template('index.html')
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def healthcheck():
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last_checked, last_status, last_details = app.health
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if time.time() - last_checked < 1:
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return last_status, last_details
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output = subprocess.check_output(['lpstat', '-p', '-d']).decode()
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mark = False
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for line in output.split('\n'):
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line = line.strip()
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if line.startswith('printer DYMO_LabelWriter450'):
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if 'is idle.' in line:
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return True, 'Idle'
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mark = True
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continue
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if mark:
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if line.startswith('Ready to print'):
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app.health = (time.time(), True, line)
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return True, line
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else:
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app.health = (time.time(), False, line)
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return False, line
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mark = False
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return False, "PRINTER_NOT_CONNECTED"
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@app.route('/health')
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def health():
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ok, details = healthcheck()
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return json.dumps({'ok': ok, 'details': details})
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@app.route('/api/preview/<int:size>/')
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def stuff_preview(size):
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text = flask.request.args.get('text')
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html = flask.request.args.get('html') == '1'
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r = Renderer()
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r.render_text(text, 'Sans {}'.format(size), 0, -1, html)
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renderer = Renderer()
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renderer.render_text(text, 'Sans {}'.format(size), 0, -1, html)
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preview = r.surface.write_to_png()
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preview = renderer.surface.write_to_png()
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return flask.Response(preview, mimetype='image/png')
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DELAY = 5
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@app.route('/api/print/<int:size>/', methods=['POST'])
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def stuff_print(size):
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if not healthcheck()[0]:
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return 'Printer is down.'
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last = app.last
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print(last, time.time() - last)
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if time.time() - last < DELAY:
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return 'Please wait {} more seconds before next print.'.format(int(DELAY - (time.time() - last)))
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text = flask.request.args.get('text')
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html = flask.request.args.get('html') == '1'
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r = Renderer()
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r.render_text(text, 'Sans {}'.format(size), 0, -1, html)
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path = '/tmp/hslabel'
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f = open(path, 'wb')
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renderer = Renderer()
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renderer.render_text(text, 'Sans {}'.format(size), 0, -1, html)
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r.surface.write_to_png(f)
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f.flush()
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f.close()
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time.sleep(1)
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ex = 'lpr -o PageSize=w118h252 -P DYMO_LabelWriter450 {}'.format(path)
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os.system(ex)
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data = img2pdf.convert(renderer.surface.write_to_png())
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payload = {'printer': 'dymo_labelwriter450', 'copies': 1, 'body': data}
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r = requests.post(os.environ.get('PRINTSERVANT_HOST') + '/print', params=payload)
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print('Printing job response', r.text)
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f.close()
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app.last = time.time()
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return 'ok'
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@ -50,7 +50,6 @@
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<div class="container">
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<div class="page-header">
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<h1>Hackerspace Printing System For Printing Labels</h1>
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<h4>System status: <span class="label label-default" id="systemstatus">unknown</span></h4>
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</div>
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<h3>Box 'o Stuff Label <small>For SAMLA boxes with common equipment</small></h3>
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<div class="row">
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@ -132,19 +131,6 @@ $ curl -d "" http://label.waw.hackerspace.pl/api/print/60/?text=foobar&html=
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print();
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});
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generatePreview();
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var updateStatus = function () {
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$.getJSON("/health", function (data) {
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if (data.ok) {
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$("#systemstatus").attr("class", "label label-success");
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$("#systemstatus").html(data.details);
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} else {
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$("#systemstatus").attr("class", "label label-danger");
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$("#systemstatus").html(data.details);
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}
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});
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};
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updateStatus();
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setInterval(updateStatus, 1000);
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});
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</script>
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</body>
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