From 039d2bf6890e8a764136b7148a421fd66ef89ad8 Mon Sep 17 00:00:00 2001
From: John-Mark Gurney <jmg@funkthat.com>
Date: Thu, 2 Jan 2020 00:34:11 -0800
Subject: [PATCH] add a program to generate bogus data

---
 fixtures/gendata.py | 66 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 fixtures/gendata.py

diff --git a/fixtures/gendata.py b/fixtures/gendata.py
new file mode 100644
index 0000000..6b1b3f8
--- /dev/null
+++ b/fixtures/gendata.py
@@ -0,0 +1,66 @@
+from random import Random
+
+gmt7 = ('GMT+7', '-0700', lambda x: x - 7 * 60 * 60)
+gmt8 = ('GMT+8', '-0800', lambda x: x - 8 * 60 * 60)
+
+def maketz(utc, tzinfo):
+	tza, tzb, fun = tzinfo
+
+	lcl = fun(utc)
+
+	return '\t'.join(('z', tza, str(lcl), str(utc), tzb))
+
+def makem(utc, tzinfo):
+	reqdel = random.uniform(.5, 2.5)
+	demand = random.uniform(.1, .5)
+
+	return '\t'.join(('m', str(utc + reqdel), str(tzinfo[2](utc)), 'Connected', '%0.4f' % demand, '1.483000', 'kW', '1.000', '1.000', 'kWh'))
+
+def gen(start, step, cnt, tzinfoseq):
+	'''Generate data starting from start, ending at stop.
+
+	Each entry is step seconds advanced.
+
+	There will be cnt entries between tzinfo, and cnt entries
+	following the final tzinfo.'''
+
+	utc = start
+
+	ret = []
+	num = 1
+	prevtz = None
+	for tz in tzinfoseq:
+		if prevtz is None:
+			prevtz = tz
+
+		for j in xrange(num):
+			ret.append(makem(utc, prevtz))
+			utc += step
+
+			if prevtz != tz and j > num / 2:
+				prevtz = tz
+
+		ret.append(maketz(utc - 1, tz))
+		num = cnt
+
+	for j in xrange(num):
+		ret.append(makem(utc, tz))
+		utc += step
+
+	return utc, ret
+
+if __name__ == '__main__':
+	global random
+
+	random = Random()
+	random.seed(5)
+
+	tzs = [ gmt7 ] * 6 + [ gmt8 ] * 3
+	nextutc, data = gen(1577952662, 10, 10, tzs)
+	print >>open('data.0.log', 'w'), '\n'.join(data)
+
+	# simulate a restart
+	nextutc += 100
+	tzs = [ gmt8 ] * 6 + [ gmt7 ] * 3
+	nextutc, data = gen(nextutc, 10, 10, tzs)
+	print >>open('data.1.log', 'w'), '\n'.join(data)