proxywatchd: make checktime constants configurable

this requires only saving the last checked time in `tested`.
you can run the following sql statement to update the existing values
in the database:
sqlite3 proxylist.sqlite \
"update proxylist set tested=tested-(1800+(failed*3600)) where failed < 6"

config.ini.sample

@@ -9,6 +9,8 @@ timeout = 15
 submit_after = 200
 use_ssl = false
 debug = false
+checktime = 3600
+perfail_checktime = 3600
 
 [ppf]
 search = true

config.py

@@ -17,6 +17,8 @@ class Config(ComboParser):
 		self.add_item('watchd', 'submit_after', int, 200, 'min. number of tested proxies for DB write', False)
 		self.add_item('watchd', 'debug', bool, False, 'whether to print additional debug info', False)
 		self.add_item('watchd', 'use_ssl', bool, False, 'whether to use SSL and port 6697 to connect to targets (slower)', False)
+		self.add_item('watchd', 'checktime', int, 1800, 'base checking interval for proxies in db in seconds', False)
+		self.add_item('watchd', 'perfail_checktime', int, 3600, 'additional checking interval for proxies in db in seconds per experienced failure', False)
 
 		self.add_item('ppf', 'search', bool, True, 'whether to use searx search engine to find new proxy lists', False)
 		self.add_item('ppf', 'timeout', float, 15, 'timeout for blocking operations (connect/recv/...) for proxy checks in seconds', False)

proxywatchd.py

@@ -20,7 +20,7 @@ class WorkerJob():
 		self.proxy = proxy
 		self.proto = proto
 		self.failcount = failcount
-		self.nextcheck = None
+		self.checktime = None
 		self.success_count = success_count
 		self.total_duration = total_duration
 
@@ -103,7 +103,7 @@ class WorkerJob():
 		return None, None, None, None, None, fail_inc
 
 	def run(self):
-		self.nextcheck = (time.time() + 1800 + ((1+int(self.failcount)) * 3600))
+		self.checktime = int(time.time())
 
 		sock, proto, duration, tor, srv, failinc = self.connect_socket()
 		if not sock:
@@ -115,7 +115,6 @@ class WorkerJob():
 			# good data
 			if re.match('^(:|ERROR|PING|PONG|NOTICE|\*\*\*)', recv, re.IGNORECASE):
 				duration = (time.time() - duration)
-				self.nextcheck = (time.time() + 1800)
 
 				#match = geolite2.lookup(proxy[0].split(':')[0])
 				match = None
@@ -241,8 +240,8 @@ class Proxywatchd():
 
 	def prepare_jobs(self):
 		self._prep_db()
-		q = 'SELECT proxy,proto,failed,success_count,total_duration FROM proxylist WHERE failed<? and tested<? ORDER BY RANDOM()' # ' LIMIT ?'
-		rows = self.mysqlite.execute(q, (config.watchd.max_fail, time.time())).fetchall()
+		q = 'SELECT proxy,proto,failed,success_count,total_duration FROM proxylist WHERE failed < ? and (tested + ? + (failed * ?)) < ? ORDER BY RANDOM()' # ' LIMIT ?'
+		rows = self.mysqlite.execute(q, (config.watchd.max_fail, config.watchd.checktime, config.watchd.perfail_checktime ,  time.time())).fetchall()
 		for row in rows:
 			job = WorkerJob(row[0], row[1], row[2], row[3], row[4])
 			self.jobs.append(job)
@@ -265,7 +264,7 @@ class Proxywatchd():
 		args = []
 		for job in self.collected:
 			if job.failcount == 0: sc += 1
-			args.append( (job.failcount, job.nextcheck, 1, 'unknown', job.proto, job.success_count, job.total_duration, job.proxy) )
+			args.append( (job.failcount, job.checktime, 1, 'unknown', job.proto, job.success_count, job.total_duration, job.proxy) )
 
 		success_rate = (float(sc) / len(self.collected)) * 100
 		ret = True
@@ -275,7 +274,7 @@ class Proxywatchd():
 			args = []
 			for job in self.collected:
 				if job.failcount == 0:
-					args.append( (job.failcount, job.nextcheck, 1, 'unknown', job.proto, job.success_count, job.total_duration, job.proxy) )
+					args.append( (job.failcount, job.checktime, 1, 'unknown', job.proto, job.success_count, job.total_duration, job.proxy) )
 			ret = False
 
 		_log("updating %d DB entries (success rate: %.2f%%)"%(len(self.collected), success_rate), 'watchd')