1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
#!/bin/bash
#
# Copyright 2023 Nordix Foundation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
set -o errexit # Exit on most errors
set -o nounset # Disallow expansion of unset variables
set -o pipefail # Use last non-zero exit code in a pipeline
#set -o xtrace # Uncomment for debugging
function script_usage() {
cat <<EOF
Usage:
-h|--help Displays this help
-u|--metrics-url=URL URL to Prometheus metrics
Default: http://localhost:8883/actuator/prometheus
-o|--output=FILE Path to output file
Default: metrics-reports/metrics-[timestamp].tsv
EOF
}
function parse_params() {
# Set parameter defaults
METRICS_URL="http://localhost:8883/actuator/prometheus"
OUTFILE="metrics-reports/metrics-$(date --iso-8601=seconds).tsv"
TEMP_DIR="/tmp/cps-metrics"
# Parse parameters
local param
while [[ $# -gt 0 ]]; do
param="$1"
shift
case $param in
-h | --help)
script_usage
exit 0
;;
-u | --metrics-url)
METRICS_URL=$1
shift
;;
-o | --output)
OUTFILE=$1
shift
;;
*)
echo "Invalid parameter was provided: $param" >&2
script_usage
exit 1
;;
esac
done
}
function generate_report() {
# Create needed directories.
mkdir -p $TEMP_DIR "$(dirname "$OUTFILE")"
# Scrape raw metrics (suppress progress meter).
curl --fail --silent --show-error --output $TEMP_DIR/metrics-raw.txt "$METRICS_URL"
# Remove comments, sort by name, and separate by tabs.
grep --invert-match "^#" $TEMP_DIR/metrics-raw.txt | sort | sed 's/,[}]/}\t/' >$TEMP_DIR/metrics-all.txt
# Extract useful metrics.
grep -E "^cps_|^spring_data_" $TEMP_DIR/metrics-all.txt >$TEMP_DIR/metrics-cps.txt
# Extract into columns.
grep "_count" $TEMP_DIR/metrics-cps.txt | sed 's/_count//' | cut -f 1 >$TEMP_DIR/column1.txt
grep "_count" $TEMP_DIR/metrics-cps.txt | cut -f 2 >$TEMP_DIR/column2.txt
grep "_sum" $TEMP_DIR/metrics-cps.txt | cut -f 2 >$TEMP_DIR/column3.txt
grep "_max" $TEMP_DIR/metrics-cps.txt | cut -f 2 >$TEMP_DIR/column4.txt
# Combine columns into report.
paste $TEMP_DIR/column{1,2,3,4}.txt >$TEMP_DIR/report.txt
# Sort by Sum (column 3), descending.
sort --general-numeric-sort --reverse --field-separator=$'\t' --key=3 $TEMP_DIR/report.txt >$TEMP_DIR/report-sorted.txt
# Compile final report, with column headers.
echo -e "Method\tCount\tSum\tMax" >"$OUTFILE"
cat $TEMP_DIR/report-sorted.txt >>"$OUTFILE"
# Output path to generated file
echo "$OUTFILE"
}
function cleanup() {
rm -f $TEMP_DIR/* && rmdir $TEMP_DIR 2>/dev/null
}
# Set up the cleanup function to be triggered upon script exit
trap cleanup EXIT
# Main script logic
parse_params "$@"
generate_report
exit 0
|
