From: Alexander Schmidt <alex@treefish.org>
Date: Wed, 8 Nov 2017 18:21:16 +0000 (+0100)
Subject: Improved error handling
X-Git-Url: http://git.treefish.org/~alex/bitvalue.git/commitdiff_plain/a7e51dc32761a31f908f39fb59e5c1098384e5cd

Improved error handling
---

diff --git a/bitvalue b/bitvalue
index 7ae8888..9cb4ee9 100755
--- a/bitvalue
+++ b/bitvalue
@@ -1,6 +1,7 @@
 #!/bin/bash
 
 CONFIG=~/.bitvaluerc
+HOST=data.bitcoinity.org
 
 TIMESPAN="24h"
 
@@ -42,12 +43,24 @@ fi
 
 source $CONFIG
 
-cat << EOF | gnuplot
+if ! ping -c 1 $HOST >/dev/null 2>&1; then
+    echo "Host $HOST is unreachable!"
+    exit 1
+fi
+
+cat << EOF | gnuplot 2>/dev/null
 set terminal dumb
 set datafile separator ","
 set xdata time
 set timefmt "%Y-%m-%d %H:%M:%S UTC"
 set title "EXCHANGE: $EXCHANGE | TIMESPAN: $TIMESPAN\nZERO RATE: $ZERO_RATE $CURRENCY | ZERO VALUE: $ZERO_VALUE $CURRENCY"
-plot "< wget -q -O - \"https://data.bitcoinity.org/export_data.csv?currency=$CURRENCY&data_type=price&exchange=$EXCHANGE&t=l&timespan=$TIMESPAN\"" \
+plot "< wget -q -O - \"https://$HOST/export_data.csv?currency=$CURRENCY&data_type=price&exchange=$EXCHANGE&t=l&timespan=$TIMESPAN\"" \
      using 1:(\$3/$ZERO_RATE*$ZERO_VALUE) with lines title ""
 EOF
+
+if [ $? -ne 0 ]; then
+    echo "Error while preparing data!" >&2
+    exit 1
+fi
+
+exit 0