Is it possible to give file on the Internet to rrd_path query?

A suggested enhancement:

stephen@librenms:~$ cat rrdrest.service

Description=Uvicorn systemd service.
After=network.target
StartLimitIntervalSec=0

[Service]
Type=simple
ExecStart=/usr/local/bin/uvicorn rrdrest:rrd_rest --host "0.0.0.0" --port 9000
User=stephen
Group=stephen
RuntimeDirectory=/var/run/uvicorn
WorkingDirectory=/home/stephen/RRDReST
ExecReload=/bin/kill -s HUP $MAINPID
KillMode=mixed
TimeoutStopSec=5
PrivateTmp=true
RestartSec=1
Restart=always

[Install]
WantedBy=multi-user.target

stephen@librenms:~$

`stephen@librenms:~$ sudo systemctl status rrdrest
● rrdrest.service
Loaded: loaded (/lib/systemd/system/rrdrest.service; enabled; vendor preset: enabled)
Active: active (running) since Sun 2023-04-02 11:52:32 AEST; 2min 2s ago
Main PID: 29832 (uvicorn)
Tasks: 5 (limit: 4636)
Memory: 11.8M
CGroup: /system.slice/rrdrest.service
└─29832 /usr/bin/python3 /usr/local/bin/uvicorn rrdrest:rrd_rest --host 0.0.0.0 --port 9000

Apr 02 11:52:32 librenms systemd[1]: Started rrdrest.service.
Apr 02 11:52:32 librenms uvicorn[29832]: INFO: Started server process [29832]
Apr 02 11:52:32 librenms uvicorn[29832]: INFO: Waiting for application startup.
Apr 02 11:52:32 librenms uvicorn[29832]: INFO: Application startup complete.
Apr 02 11:52:32 librenms uvicorn[29832]: INFO: Uvicorn running on http://0.0.0.0:9000 (Press CTRL+C to quit)`

Note that I used the git directory as the working directory as uvicorn cant find the RRD module unless the CWD is the git directory. Perhaps some instructions on installing the module might help, to noobs like me :)

Thanks for RRDRest! It's helping me with a project to collect LibreNMS RRD data for reporting with PowerBI.

Quick feature req that I'm happy to work on and submit a PR for, it'd be nice if I could specify the step that gets passed to rrdtool.

Dear tbotnz
I'm Paolo Cruschelli from Italy. Thank you for your work on RRDREST, I managed to have it working with my librenms installation.
One question arise. Is it possible to display the aggregated data from two (or more ports)?, in other words is is possible to query two (or more) .rrd files at once?

I know that this is possible with rrdtools (in the following an example which aggregates bandwidth for two files related to two ports:
port-id1170.rrd
port-id1169.rrd

thank you in advance
regards

Paolo

rrdtool graph /tmp/W96uhLxhVo9u15Ht --start 1675162500 --end 1675248900 --width 1519 --height 300 --font LEGEND:8:DejaVuSansMono --font AXIS:7:DejaVuSansMono --font-render-mode normal -c FONT#000000 -c BACK#EEEEEE00 -c SHADEA#EEEEEE00 -c SHADEB#EEEEEE00 -c CANVAS#FFFFFF00 -c GRID#a5a5a5 -c MGRID#FF9999 -c FRAME#5e5e5e -c ARROW#5e5e5e --alt-autoscale-max --rigid --slope-mode COMMENT:'Bits/sec ' COMMENT:' Current' COMMENT:' Average' COMMENT:' Maximum' COMMENT:'\l' DEF:in0=62.196.5.4/port-id1170.rrd:INOCTETS:AVERAGE DEF:out0=62.196.5.4/port-id1170.rrd:OUTOCTETS:AVERAGE CDEF:inB0=in0,8,* CDEF:outB0=out0,8,* CDEF:outB0_neg=outB0,-1,* CDEF:octets0=inB0,outB0,+ AREA:inB0#CAE853:'pe-mi-196-04-piastra In' GPRINT:inB0:LAST:%6.2lf%sbps GPRINT:inB0:AVERAGE:%6.2lf%sbps GPRINT:inB0:MAX:%6.2lf%sbps\l 'HRULE:0#A9A9F2:ge-1/0/1 Out' GPRINT:outB0:LAST:%6.2lf%sbps GPRINT:outB0:AVERAGE:%6.2lf%sbps GPRINT:outB0:MAX:%6.2lf%sbps\l 'COMMENT:\l' DEF:in1=62.196.5.4/port-id1169.rrd:INOCTETS:AVERAGE DEF:out1=62.196.5.4/port-id1169.rrd:OUTOCTETS:AVERAGE CDEF:inB1=in1,8,* CDEF:outB1=out1,8,* CDEF:outB1_neg=outB1,-1,* CDEF:octets1=inB1,outB1,+ AREA:inB1#B2D849:'pe-mi-196-04-piastra In':STACK GPRINT:inB1:LAST:%6.2lf%sbps GPRINT:inB1:AVERAGE:%6.2lf%sbps GPRINT:inB1:MAX:%6.2lf%sbps\l 'HRULE:0#9696DD:ge-1/0/0 Out' GPRINT:outB1:LAST:%6.2lf%sbps GPRINT:outB1:AVERAGE:%6.2lf%sbps GPRINT:outB1:MAX:%6.2lf%sbps\l 'COMMENT:\l' 'AREA:outB0_neg#A9A9F2:' 'AREA:outB1_neg#9696DD::STACK' HRULE:0#999999 --daemon 100.67.0.46:42217