From: Roman Bazalevsky <rvb@rvb.name>
Date: Thu, 23 Jan 2020 07:24:52 +0000 (+0300)
Subject: Транзакционная работа с БД для избежания блокировок.
X-Git-Url: https://git.rvb.name/weathermon.git/commitdiff_plain/21260a74f42a65603317d1938fac675d5eef6635?ds=sidebyside;hp=529af1a8e82eff19d98f6f60a98fc6d5e3e8d95d

Транзакционная работа с БД для избежания блокировок.
---

diff --git a/bin/dump-yesterday b/bin/dump-yesterday
index d96d3dd..c9e1eaf 100755
--- a/bin/dump-yesterday
+++ b/bin/dump-yesterday
@@ -12,6 +12,6 @@ if [ -f "$logdb" ]; then
 
   /usr/bin/weather-filter $logdb dump-compacted $yesterday $dumpdir
 
-  sqlite3 $logdb "delete from log where time_stamp<date('now','-1 day')"
+  sqlite3 $logdb "delete from log where time_stamp<date('now','-2 day')"
 
 fi
diff --git a/bin/weather-backup b/bin/weather-backup
index fd219f7..7f8009b 100755
--- a/bin/weather-backup
+++ b/bin/weather-backup
@@ -6,10 +6,10 @@ LOGDB=`uci get weathermon.process.logdb`
 
 if [ ! -z "$BACKLOGDB" ]; then
 	BACKLOG_BASE=$(basename "$BACKLOGDB")
-	sqlite3 "$BACKLOGDB" ".backup $BACKUP_DIR/$BACKLOG_BASE" 
+	sqlite3 -readonly "$BACKLOGDB" ".backup $BACKUP_DIR/$BACKLOG_BASE" 
 fi
 
 if [ ! -z "$LOGDB" ]; then
 	LOG_BASE=$(basename "$LOGDB")
-	sqlite3 "$LOGDB" ".backup $BACKUP_DIR/$LOG_BASE" 
+	sqlite3 -readonly "$LOGDB" ".backup $BACKUP_DIR/$LOG_BASE" 
 fi
diff --git a/bin/weather-filter b/bin/weather-filter
index 84c2265..3acca7b 100755
--- a/bin/weather-filter
+++ b/bin/weather-filter
@@ -175,7 +175,7 @@ local day = arg[3]
 
 local dbdriver = require "luasql.sqlite3"
 env = assert(dbdriver.sqlite3())
-con = assert(env:connect(logdb))
+con = assert(env:connect(logdb,'READONLY'))
 
 if command == "list" then
 
diff --git a/bin/weather-watchdog b/bin/weather-watchdog
index 4847477..48c4bff 100644
--- a/bin/weather-watchdog
+++ b/bin/weather-watchdog
@@ -4,7 +4,8 @@ stamp=`date +%s -r $(uci get weathermon.process.dump_file)`
 now=`date +%s`
 delta=$(( $now - $stamp ))
 if [[ $delta -ge 300 ]]; then
+  logger weathermon restarting...
   /etc/init.d/weathermon restart
 fi
 
-pgrep weather-display > /dev/null || /etc/init.d/weather-display restart
+pgrep weather-lcd > /dev/null || /etc/init.d/lcd-weather restart
diff --git a/bin/weathermon b/bin/weathermon
index bd9ca80..dbffa82 100755
--- a/bin/weathermon
+++ b/bin/weathermon
@@ -105,13 +105,17 @@ function submitValue(type,id,param,val)
 
     if code ~= 200 and backlog_con then
       printLog("writing record to backlog...")
+      backlog_con:execute('BEGIN TRANSACTION')
       backlog_con:execute(string.format("INSERT INTO queue(time_stamp,sensor_id,sensor,param,value) VALUES (datetime('now','localtime'),'%s','%s','%s',%f)",id,type,param,val))
+      backlog_con:execute('COMMIT')
     end
 
   end
   
   if logdb then
+    log_con:execute('BEGIN TRANSACTION')
     log_con:execute(string.format("INSERT INTO log(time_stamp,sensor_id,sensor,param,value) VALUES (datetime('now','localtime'),'%s','%s','%s',%f)",id,type,param,val))
+    log_con:execute('COMMIT')
   end
 
 end
@@ -408,7 +412,6 @@ while 1 do
         io.close(f)
       end)  
     end
-
   end)
     
 end