From 429425fca5175618e90fb94eee43744b70429ce7 Mon Sep 17 00:00:00 2001
From: Georg Hopp <georg@steffers.org>
Date: Mon, 17 Mar 2014 21:45:53 +0000
Subject: [PATCH] add load average classes

---
 gatherer/misc_information.sh   | 36 +++++++++++++++++++++
 gatherer/system_information.sh |  2 ++
 notes/cf-engine-classes.txt    | 58 +++++++++++++++++++---------------
 run.sh                         |  3 ++
 4 files changed, 73 insertions(+), 26 deletions(-)
 create mode 100644 gatherer/misc_information.sh

diff --git a/gatherer/misc_information.sh b/gatherer/misc_information.sh
new file mode 100644
index 0000000..ba9f3f6
--- /dev/null
+++ b/gatherer/misc_information.sh
@@ -0,0 +1,36 @@
+gather_uptime_info() {
+	[ -z "${UPTIME}" ] || return
+
+	export UPTIME=""
+	export LOAD_1=""
+	export LOAD_5=""
+	export LOAD_15=""
+
+	has_class "Linux" && {
+		eval $(${AWK} -v ncpus=${NCPUS} '{
+			print "LOAD_1=\"" $1 "\";LOAD_5=\"" $2 "\";LOAD_15=\"" $3 "\";";
+			for(i=1; i<4; i++) {
+				if($i<=0.0) {
+					load="LOW"
+				} else {
+					inv_load=ncpus/$i;
+					if (inv_load > (ncpus/2)) {
+						load="LOW";
+					} else {
+						load="MODERATE";
+					}
+					if (inv_load <= 0) load="HIGH";
+				}
+
+				if(i==1) { classes=classes "LOAD_1_" load " " }
+				if(i==2) { classes=classes "LOAD_5_" load " " }
+				if(i==3) { classes=classes "LOAD_15_" load " "; }
+			}
+			print "set_class " classes ";";
+		}' </proc/loadavg)
+	}
+
+	export UPTIME LOAD_1 LOAD_5 LOAD_15
+}
+
+# vim: set ts=4 sw=4:
diff --git a/gatherer/system_information.sh b/gatherer/system_information.sh
index 1dcb84e..eae2b30 100644
--- a/gatherer/system_information.sh
+++ b/gatherer/system_information.sh
@@ -5,12 +5,14 @@ include_once utils/classes.sh
 include_once gatherer/host_information.sh
 include_once gatherer/dist_information.sh
 include_once gatherer/cpu_information.sh
+include_once gatherer/misc_information.sh
 include_once gatherer/interface_information.sh
 
 gather_information() {
 	gather_host_info
 	gather_dist_info
 	gather_cpu_info
+	gather_uptime_info
 	gather_interface_info
 }
 
diff --git a/notes/cf-engine-classes.txt b/notes/cf-engine-classes.txt
index 8d8c098..ac58cba 100644
--- a/notes/cf-engine-classes.txt
+++ b/notes/cf-engine-classes.txt
@@ -17,6 +17,17 @@
 =test /// (hostname) ///
 =x86_64
 
+/// network classes ///
+-ipv4_127
+-ipv4_127_0
+-ipv4_127_0_0
+-ipv4_127_0_0_1
+-ipv4_192
+-ipv4_192_168
+-ipv4_192_168_120
+-ipv4_192_168_120_40
+/// instead of doing this I add the valid networks of the host ///
+
 /// time control classes ///
 ?Day15
 ?Evening
@@ -30,24 +41,15 @@
 ?Saturday
 ?Yr2014
 
-Lcycle_1
-PK_MD5_1cc0a2b13599f57ebb17df5abdc45ae1
-agent
-any
-cfengine_3
-cfengine_3_5
-cfengine_3_5_3
-community_edition
-compiled_on_linux_gnu
-inform_mode
-verbose_mode
-
 /// threshold classes ///
-cpu0_high
-cpu1_high
-cpu2_high
-cpu3_high
-cpu_high
+-cpu0_high
+-cpu1_high
+-cpu2_high
+-cpu3_high
+-cpu_high
+/// I replaced these with informations about the current average load
+/// My assumption here is that the average is by far more useful.
+
 diskfree_high_normal
 entropy_misc_in_low
 entropy_misc_out_low
@@ -59,12 +61,16 @@ rootprocs_high
 ssh_in_high
 users_high
 
-/// network classes ///
-ipv4_127
-ipv4_127_0
-ipv4_127_0_0
-ipv4_127_0_0_1
-ipv4_192
-ipv4_192_168
-ipv4_192_168_120
-ipv4_192_168_120_40
+/// I guess that these are cfengine specific so I ignore these. ///
+Lcycle_1
+PK_MD5_1cc0a2b13599f57ebb17df5abdc45ae1
+agent
+any
+cfengine_3
+cfengine_3_5
+cfengine_3_5_3
+community_edition
+compiled_on_linux_gnu
+inform_mode
+verbose_mode
+
diff --git a/run.sh b/run.sh
index c37888b..70ac3f9 100755
--- a/run.sh
+++ b/run.sh
@@ -30,6 +30,9 @@ ${PRINTF} "%15s : %s\n" "# CPUS" "${NCPUS}"
 ${PRINTF} "%15s : %s\n" "BYTE_ORDER" "${BYTE_ORDER}"
 ${PRINTF} "%15s : %s\n" "OP_MODES" "${OP_MODES}"
 ${PRINTF} "%15s : %s\n" "CPU_VIRT" "${CPU_VIRT}"
+${PRINTF} "%15s : %s\n" "LOAD_1" "${LOAD_1}"
+${PRINTF} "%15s : %s\n" "LOAD_5" "${LOAD_5}"
+${PRINTF} "%15s : %s\n" "LOAD_15" "${LOAD_15}"
 ${PRINTF} "%15s : %s\n" "# INTERFACES" "${NINTERFACES}"
 
 NO=1