39 lines
1.1 KiB
Bash
39 lines
1.1 KiB
Bash
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#!/usr/bin/env bash
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set -euo pipefail
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if (( $# != 4 )); then
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echo "usage: $(basename "$0") <database> <table> <start epoch> <end epoch>" 1>&2
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exit 1
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fi
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db=$1
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table=$2
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start=$3
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end=$4
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sqlite3 -batch "${db}" << EOF
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CREATE TEMP VIEW tmp_energy
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AS
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WITH tmp_diff AS (
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SELECT timestamp,
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LEAD(timestamp) OVER (ORDER BY timestamp) - timestamp AS timediff,
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0.5*(LEAD(rack_1) OVER (ORDER BY timestamp) + rack_1) AS rack_1_av,
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0.5*(LEAD(rack_2) OVER (ORDER BY timestamp) + rack_2) AS rack_2_av,
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0.5*(LEAD(rack_3) OVER (ORDER BY timestamp) + rack_3) AS rack_3_av,
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0.5*(LEAD(rack_4) OVER (ORDER BY timestamp) + rack_4) AS rack_4_av
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FROM ${table}
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)
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SELECT
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${table}.timestamp AS timestamp,
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rack_1_av*timediff/3.6e+6 AS rack_1_energy_kWh,
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rack_2_av*timediff/3.6e+6 AS rack_2_energy_kWh,
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rack_3_av*timediff/3.6e+6 AS rack_3_energy_kWh,
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rack_4_av*timediff/3.6e+6 AS rack_4_energy_kWh
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FROM ${table}
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INNER JOIN tmp_diff ON ${table}.timestamp = tmp_diff.timestamp
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WHERE timediff NOT NULL;
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SELECT SUM(rack_1_energy_kWh) + SUM(rack_2_energy_kWh)
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FROM tmp_energy
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WHERE timestamp >= ${start} and timestamp <= ${end};
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EOF
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