#! /usr/bin/awk -f
+
/^in:ENERGY/\
{
split_msg_parts()
+ sub("%$", "", $2)
db["energy_state"] = $1
- db["energy_percentage"] = $2
+ db["energy_percentage"] = ensure_numeric($2)
+ alert_check_energy()
}
/^in:MEMORY/\
{
split_msg_parts()
db["datetime"] = msg_body
- print make_bar()
+ output_msg_status_bar(make_status_bar())
+}
+
+# TODO: Generalize alert spec lang
+# - trigger threshold
+# - above/bellow/equal to threshold value
+# - priority
+# - snooze time (if already alerted, when to re-alert?)
+# - text: subject/body
+function alert_check_energy( dbg, state, remaining, subj, body) {
+ state = db["energy_state"]
+ remaining = db["energy_percentage"]
+
+ dbg["state"] = state
+ dbg["remaining"] = remaining
+ debug("alert_check_energy", dbg)
+
+ if (state == "discharging") {
+ if (remaining < 5) {
+ subj = "Energy_CRITICALLY_Low"
+ body = sprintf("%d%% CHARGE NOW!!! GO GO GO!!!", remaining)
+ alert_trigger_hi(subj, body)
+ } else if (remaining < 10) {
+ subj = "Energy_Very_Low"
+ body = sprintf("%d%% Plug it in ASAP.", remaining)
+ alert_trigger_hi(subj, body)
+ } else if (remaining < 15) {
+ subj = "Energy_Low"
+ body = sprintf("%d%% Get the charger.", remaining)
+ alert_trigger_hi(subj, body)
+ } else if (remaining < 50) {
+ if (!state__alerts__energy__notified_bellow_half) {
+ state__alerts__energy__notified_bellow_half = 1
+ subj = "Energy_Bellow_Half"
+ body = sprintf("%d%% Where is the charger?", remaining)
+ alert_trigger_med(subj, body)
+ }
+ }
+ } else {
+ # TODO: Reconsider the competing global-state organizing-conventions
+ state__alerts__energy__notified_bellow_half = 0
+ }
+}
+
+function alert_trigger_low(subject, body) {
+ alert_trigger("low", subject, body)
+}
+
+function alert_trigger_med(subject, body) {
+ alert_trigger("med", subject, body)
+}
+
+function alert_trigger_hi(subject, body) {
+ alert_trigger("hi", subject, body)
+}
+
+function alert_trigger(priority, subject, body, msg) {
+ # priority : "low" | "med" | "hi"
+ # subject : no spaces
+ # body : anything
+ msg = sprintf("%s %s %s", priority, subject, body)
+ output_msg_alert(msg)
+}
+
+function output_msg_alert(msg) {
+ # TODO: Should alerts go into a dedicated channel?
+ output_msg("ALERT", msg, "/dev/stdout")
+}
+
+function output_msg_status_bar(msg) {
+ output_msg("STATUS_BAR", msg, "/dev/stdout")
+}
+
+function output_msg(type, content, channel) {
+ print(type, content) > channel
}
function set_load_avg( sched) {
db["screen_brightness"] = (cur / max) * 100
}
-function split_msg_parts() {
+function split_msg_parts( dbg) {
msg_head = $1
sub("^" msg_head " +", "")
msg_body = $0
- debug(msg_head, msg_body)
+ dbg["msg_head"] = msg_head
+ dbg["msg_body"] = msg_body
+ debug("split_msg_parts", dbg)
}
-function make_bar( position, bar, sep, i, j) {
+function make_status_bar( position, bar, sep, i, j) {
position[++i] = make_status_energy()
position[++i] = make_status_mem()
position[++i] = make_status_cpu()
} else {
direction_of_change = "="
};
- printf("E%s%s", direction_of_change, db["energy_percentage"])
+ return sprintf("E%s%d%%", direction_of_change, db["energy_percentage"])
}
function make_status_mem( total, used, percent, status) {
return int(n + 0.5)
}
-function debug(location, msg) {
+function debug(location, values, sep, vals, key, msg) {
if (opt_debug) {
- print_error(location, msg)
+ sep = ""
+ vals = ""
+ for (key in values) {
+ vals = sprintf("%s%s%s: %s", vals, sep, key, values[key])
+ sep = ", "
+ }
+ msg = location " ==> " vals "."
+ output_msg("DEBUG", msg, "/dev/stderr")
}
}
-function print_error(location, msg) {
- print(location " ==> " msg) > "/dev/stderr"
-}
+function ensure_numeric(n) {
+ return n + 0
+}
+#-------------------------------
+# Why do we need ensure_numeric?
+#-------------------------------
+# awk appears to be guessing the type of an inputted scalar based on usage, so
+# if we read-in a number, but did not use it in any numeric operations, but did
+# use as a string (even in just a format string!) - it will be treated as a
+# string and can lead to REALLY SURPRISING behavior in conditional statements,
+# where smaller number may compare as greater than the bigger ones, such as.
+#
+# Demo:
+#
+# $ awk 'BEGIN {x = "75"; y = "100"; sprintf("x: %d, y: %d\n", x, y); if (x > y) {print "75 > 100"} else if (x < y) {print "75 < 100"}}'
+# 75 < 100
+# $ awk 'BEGIN {x = "75"; y = "100"; sprintf("x: %s, y: %d\n", x, y); if (x > y) {print "75 > 100"} else if (x < y) {print "75 < 100"}}'
+# 75 > 100
+
+# However, once used as a number, seems to stay that way even after being
+# used as string:
+#
+# $ awk 'BEGIN {x = "75"; y = "100"; x + y; sprintf("x: %s, y: %d\n", x, y); if (x > y) {print "75 > 100"} else if (x < y) {print "75 < 100"}}'
+# 75 < 100
+#
+# $ awk 'BEGIN {x = "75"; y = "100"; x + y; sprintf("x: %s, y: %d\n", x, y); z = x y; if (x > y) {print "75 > 100"} else if (x < y) {print "75 < 100"}}'
+# 75 < 100
+#
+# $ awk 'BEGIN {x = "75"; y = "100"; x + y; z = x y; if (x > y) {print "75 > 100"} else if (x < y) {print "75 < 100"}}'
+# 75 < 100
+# $ awk 'BEGIN {x = "75"; y = "100"; z = x y; if (x > y) {print "75 > 100"} else if (x < y) {print "75 < 100"}}'
+# 75 > 100
home / code / khatus.git / blobdiff