I think I found a way to prevent the generation of unnecessary headers in the
html code.
Maybe instead of a chart.buildhtml() will call the method buildcontent()?
See my example below which shows how it is implemented now in the Airflow and
how this can be implemented
First, prepare a random graph (example taken from the documentation of the
module):
=============================================================
from nvd3 import lineChart
chart = lineChart(name="lineChart", x_is_date=False, x_axis_format="AM_PM")
xdata = range(24)
ydata = [0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 4, 3, 3, 5, 7, 5, 3, 16, 6, 9, 15, 4,
12]
ydata2 = [9, 8, 11, 8, 3, 7, 10, 8, 6, 6, 9, 6, 5, 4, 3, 10, 0, 6, 3, 1, 0, 0,
0, 1]
extra_serie = {"tooltip": {"y_start": "There are ", "y_end": " calls"}}
chart.add_serie(y=ydata, x=xdata, name='sine', extra=extra_serie)
extra_serie = {"tooltip": {"y_start": "", "y_end": " min"}}
chart.add_serie(y=ydata2, x=xdata, name='cose', extra=extra_serie)
=============================================================
So now use the module in Airflow:
=============================================================
chart.buildhtml()
str(chart)
Out[62]: '<!DOCTYPE html>\n<html lang="en">\n <head>\n <meta
charset="utf-8" />\n <link
href="https://cdnjs.cloudflare.com/ajax/libs/nvd3/1.7.0/nv.d3.min.css";
rel="stylesheet" />
....
....
....
</body>\n</html>'
=============================================================
But this way you can generate html code which is guaranteed not to contain we
do not need the headers:
=============================================================
chart.buildcontent()
str(chart.content)
Out[64]: '\n <div id="linechart"><svg
style="height:450px;"></svg></div>\n\n\n <script>\n\n\n\n
data_linechart=[{"values": [{"x": 0, "y": 0}, {"x": 1, "y": 0}, {"x": 2, "y":
1}, {"x": 3, "y": 1}, {"x": 4, "y": 0}, {"x": 5, "y": 0}, {"x": 6, "y": 0},
{"x": 7, "y": 0}, {"x": 8, "y": 1}, {"x": 9, "y": 0}, {"x": 10, "y": 0}, {"x":
11, "y": 4}, {"x": 12, "y": 3}, {"x": 13, "y": 3}, {"x": 14, "y": 5},
....
....
....
</script>\n'
=============================================================
-----Original Message-----
From: Bolke de Bruin [mailto:[email protected]]
Sent: Monday, January 30, 2017 12:52 PM
To: [email protected]
Subject: Re: nvd3 is an external resource
This is in python-nvd3, NVD3Chart.py. Can you please open an issue with them?
It seems we can override the setting in Airflow so we can workaround it, but
they should fix this.
Bolke
> On 30 Jan 2017, at 10:50, Сёмочкин Максим Викторович <[email protected]> wrote:
>
> I checked again and it seems I saw the problem.
> In the Airflow (more precisely in the Flask) the necessary files are loaded
> from the directory static no problem with that.
> But at some point in the code the method is called chart.buildhtml(), then a
> representation of a chart object will become an html that among other things
> contains the lines:
> <link
> href="https://cdnjs.cloudflare.com/ajax/libs/nvd3/1.7.0/nv.d3.min.css";
> rel="stylesheet" />
> <script
> src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js";></script>
> <script
> src="https://cdnjs.cloudflare.com/ajax/libs/nvd3/1.7.0/nv.d3.min.js";></script>
>
> -----Original Message-----
> From: Bolke de Bruin [mailto:[email protected]]
> Sent: Monday, January 30, 2017 11:55 AM
> To: [email protected]
> Subject: Re: nvd3 is an external resource
>
> Did you double check btw? The nvd3 libraries are pulled from a local
> resources as far as I can see.
>
> - Bolke
>
>> On 30 Jan 2017, at 09:45, Bolke de Bruin <[email protected]> wrote:
>>
>> That is indeed unfortunate. python-nvd3 pulls its in this way (thus not
>> Airflow itself). It might be a config thing with them.
>>
>> Bolke
>>
>>> On 30 Jan 2017, at 09:42, Сёмочкин Максим Викторович <[email protected]>
>>> wrote:
>>>
>>> Hello!
>>> Did I understand correctly that version 1.8 is a library for drawing charts
>>> (nvd3) is loaded from external resource - cloudflare?
>>> Our problem is that the Airflow is installed in a closed network segment
>>> that has no Internet access
>>
>
