From: Dobrica Pavlinusic <dpavlin@rot13.org>
Date: Sun, 21 Feb 2021 09:18:15 +0000 (+0000)
Subject: send data with timestamp to influx
X-Git-Url: http://git.rot13.org/?p=air-quality;a=commitdiff_plain;h=3891fbda4dc76328c3c53d890609cb1b31070359;hp=c9bfa79f7249f0963798648a565243e4a3e63161

send data with timestamp to influx

This will hide network latency from readings
---

diff --git a/iio2mqtt.pl b/iio2mqtt.pl
index a9dce9f..4081540 100755
--- a/iio2mqtt.pl
+++ b/iio2mqtt.pl
@@ -6,12 +6,15 @@ use Time::HiRes;
 
 # sudo apt install libiio-utils mosquitto-clients
 
+my $influx_url = shift @ARGV || 'http://10.13.37.92:8086/write?consistency=any&db=rot13';
+
 my $hostname = `hostname -s`;
 chomp($hostname);
 
 while(1) {
 
 	my $t = Time::HiRes::time;
+	my $t_influx = int( $t * 1_000_000_000 );
 
 	my $iio = `iio_info`;
 
@@ -31,6 +34,9 @@ while(1) {
 			my $topic = "iio/$hostname/$device/$name";
 			#print "$topic $val\n";
 			system "mosquitto_pub -h rpi2 -t $topic -m $val";
+
+			my $influx = "iio,dc=trnjanska,host=$hostname,device=$device $name=$val $t_influx";
+			system "curl --silent -XPOST '$influx_url' --data-binary '$influx'";
 		} else {
 			#warn "# $_\n";
 		}