Add a new DynamicMeter class for runtime Meter extension

This commit is based on exploratory work by Sohaib Mohamed.
The end goal is two-fold - to support addition of Meters we
build via configuration files for both the PCP platform and
for scripts ( https://github.com/htop-dev/htop/issues/526 )

Here, we focus on generic code and the PCP support.  A new
class DynamicMeter is introduced - it uses the special case
'param' field handling that previously was used only by the
CPUMeter, such that every runtime-configured Meter is given
a unique identifier.  Unlike with the CPUMeter this is used
internally only.  When reading/writing to htoprc instead of
CPU(N) - where N is an integer param (CPU number) - we use
the string name for each meter.  For example, if we have a
configuration for a DynamicMeter for some Redis metrics, we
might read and write "Dynamic(redis)".  This identifier is
subsequently matched (back) up to the configuration file so
we're able to re-create arbitrary user configurations.

The PCP platform configuration file format is fairly simple.
We expand configs from several directories, including the
users homedir alongside htoprc (below htop/meters/) and also
/etc/pcp/htop/meters.  The format will be described via a
new pcp-htop(5) man page, but its basically ini-style and
each Meter has one or more metric expressions associated, as
well as specifications for labels, color and so on via a dot
separated notation for individual metrics within the Meter.

A few initial sample configuration files are provided below
./pcp/meters that give the general idea.  The PCP "derived"
metric specification - see pmRegisterDerived(3) - is used
as the syntax for specifying metrics in PCP DynamicMeters.
This commit is contained in:
Nathan Scott
2021-06-23 17:44:56 +10:00
parent 865b85eb2d
commit f0ed0fdafb
48 changed files with 1044 additions and 68 deletions

56
CRT.c
View File

@ -195,6 +195,15 @@ static int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
[ZFS_COMPRESSED] = ColorPair(Blue, Black),
[ZFS_RATIO] = ColorPair(Magenta, Black),
[ZRAM] = ColorPair(Yellow, Black),
[DYNAMIC_GRAY] = ColorPairGrayBlack,
[DYNAMIC_DARKGRAY] = A_BOLD | ColorPairGrayBlack,
[DYNAMIC_RED] = ColorPair(Red, Black),
[DYNAMIC_GREEN] = ColorPair(Green, Black),
[DYNAMIC_BLUE] = ColorPair(Blue, Black),
[DYNAMIC_CYAN] = ColorPair(Cyan, Black),
[DYNAMIC_MAGENTA] = ColorPair(Magenta, Black),
[DYNAMIC_YELLOW] = ColorPair(Yellow, Black),
[DYNAMIC_WHITE] = ColorPair(White, Black),
},
[COLORSCHEME_MONOCHROME] = {
[RESET_COLOR] = A_NORMAL,
@ -288,6 +297,15 @@ static int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
[ZFS_COMPRESSED] = A_BOLD,
[ZFS_RATIO] = A_BOLD,
[ZRAM] = A_NORMAL,
[DYNAMIC_GRAY] = A_DIM,
[DYNAMIC_DARKGRAY] = A_DIM,
[DYNAMIC_RED] = A_BOLD,
[DYNAMIC_GREEN] = A_NORMAL,
[DYNAMIC_BLUE] = A_NORMAL,
[DYNAMIC_CYAN] = A_BOLD,
[DYNAMIC_MAGENTA] = A_NORMAL,
[DYNAMIC_YELLOW] = A_NORMAL,
[DYNAMIC_WHITE] = A_BOLD,
},
[COLORSCHEME_BLACKONWHITE] = {
[RESET_COLOR] = ColorPair(Black, White),
@ -380,7 +398,16 @@ static int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
[ZFS_OTHER] = ColorPair(Magenta, White),
[ZFS_COMPRESSED] = ColorPair(Cyan, White),
[ZFS_RATIO] = ColorPair(Magenta, White),
[ZRAM] = ColorPair(Yellow, White)
[ZRAM] = ColorPair(Yellow, White),
[DYNAMIC_GRAY] = ColorPair(Black, White),
[DYNAMIC_DARKGRAY] = A_BOLD | ColorPair(Black, White),
[DYNAMIC_RED] = ColorPair(Red, White),
[DYNAMIC_GREEN] = ColorPair(Green, White),
[DYNAMIC_BLUE] = ColorPair(Blue, White),
[DYNAMIC_CYAN] = ColorPair(Yellow, White),
[DYNAMIC_MAGENTA] = ColorPair(Magenta, White),
[DYNAMIC_YELLOW] = ColorPair(Yellow, White),
[DYNAMIC_WHITE] = A_BOLD | ColorPair(Black, White),
},
[COLORSCHEME_LIGHTTERMINAL] = {
[RESET_COLOR] = ColorPair(Black, Black),
@ -474,6 +501,15 @@ static int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
[ZFS_COMPRESSED] = ColorPair(Cyan, Black),
[ZFS_RATIO] = A_BOLD | ColorPair(Magenta, Black),
[ZRAM] = ColorPair(Yellow, Black),
[DYNAMIC_GRAY] = ColorPairGrayBlack,
[DYNAMIC_DARKGRAY] = A_BOLD | ColorPairGrayBlack,
[DYNAMIC_RED] = ColorPair(Red, Black),
[DYNAMIC_GREEN] = ColorPair(Green, Black),
[DYNAMIC_BLUE] = ColorPair(Blue, Black),
[DYNAMIC_CYAN] = ColorPair(Cyan, Black),
[DYNAMIC_MAGENTA] = ColorPair(Magenta, Black),
[DYNAMIC_YELLOW] = ColorPair(Yellow, Black),
[DYNAMIC_WHITE] = ColorPairWhiteDefault,
},
[COLORSCHEME_MIDNIGHT] = {
[RESET_COLOR] = ColorPair(White, Blue),
@ -567,6 +603,15 @@ static int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
[ZFS_COMPRESSED] = A_BOLD | ColorPair(White, Blue),
[ZFS_RATIO] = A_BOLD | ColorPair(Magenta, Blue),
[ZRAM] = A_BOLD | ColorPair(Yellow, Blue),
[DYNAMIC_GRAY] = ColorPairGrayBlack,
[DYNAMIC_DARKGRAY] = A_BOLD | ColorPairGrayBlack,
[DYNAMIC_RED] = ColorPair(Red, Blue),
[DYNAMIC_GREEN] = ColorPair(Green, Blue),
[DYNAMIC_BLUE] = ColorPair(Black, Blue),
[DYNAMIC_CYAN] = ColorPair(Cyan, Blue),
[DYNAMIC_MAGENTA] = ColorPair(Magenta, Blue),
[DYNAMIC_YELLOW] = ColorPair(Yellow, Blue),
[DYNAMIC_WHITE] = ColorPair(White, Blue),
},
[COLORSCHEME_BLACKNIGHT] = {
[RESET_COLOR] = ColorPair(Cyan, Black),
@ -658,6 +703,15 @@ static int CRT_colorSchemes[LAST_COLORSCHEME][LAST_COLORELEMENT] = {
[ZFS_COMPRESSED] = ColorPair(Blue, Black),
[ZFS_RATIO] = ColorPair(Magenta, Black),
[ZRAM] = ColorPair(Yellow, Black),
[DYNAMIC_GRAY] = ColorPairGrayBlack,
[DYNAMIC_DARKGRAY] = A_BOLD | ColorPairGrayBlack,
[DYNAMIC_RED] = ColorPair(Red, Black),
[DYNAMIC_GREEN] = ColorPair(Green, Black),
[DYNAMIC_BLUE] = ColorPair(Blue, Black),
[DYNAMIC_CYAN] = ColorPair(Cyan, Black),
[DYNAMIC_MAGENTA] = ColorPair(Magenta, Black),
[DYNAMIC_YELLOW] = ColorPair(Yellow, Black),
[DYNAMIC_WHITE] = ColorPair(White, Black),
},
[COLORSCHEME_BROKENGRAY] = { 0 } // dynamically generated.
};