graphs: Add uptime graph

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

string: Check format strings

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

sources: Add source for the system's uptime

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

string: Make all functions static

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

string: Add formatting functions

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

string: Add our string comparison function

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

util: Add macros for branch prediction

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

sources: Add softirqs

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

queue: Fail if the object contains invalid characters

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

sources: Add sources for IPv4 fragmentation information

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

Add source for memory usage

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

daemon: Use macros to convert time

That way, I will hopefully not get the maths wrong all the time.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

source: Complain if the heartbeat was called too late

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

source: Complain if something stalls the event loop

This source will also be de-prioritized so that other sources can work
better.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

sources: Add a test that stalls the event loop

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

source: Lower the heartbeat if a source is in error state

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

sources: Store result codes and check for patterns

That way we can disable any sources which constantly fail and we might
as well detect flapping.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

sources: Add some tests

Oone constantly returns an error, the other one returns an error with a
probability of 50%. They are to test the internal error handling.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

sources: Add source for disk usage

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

po: Update translations

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

sources: Add PSI for I/O

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

sources: Add PSI for memory

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

sources: Add PSI for CPU

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Make it configurable if the graph is reversed

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

Add a processor graph

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

sources: Add source for processor usage

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Add context switch graph

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: conntrack: Remove unused color definitions

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Add macro to format headers

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Add macros to draw transparent areas easier

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Consolidate macros with and without label

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Create macros to write less code

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

po: Update translations

This is to make "make distcheck" happy.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Add a conntrack graph

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Move all stuff that is needed to draw graphs into a new header

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

daemon: Rename modules to sources

This makes more sense as the graphs have now been split into their own
modules, and so we won't have a too generic term for the sources.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

modules: Rename methods to impl

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Measure the time it takes to generate a graph

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Add title and vertical label

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Always pass --rigid

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Add upper and lower limits

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Make backgrounds transparent

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

colors: Fix black and white

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

colors: Remove the prefix

I suppose there will be no collisions in the namespace.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

loadavg: Add a simple graph

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Add macros to draw some elements

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

colors: Add macro to make colors transparent

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

colors: Add orange

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Draw all graphs from back to front

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

client: Use a helper function to send format

No functional changes, just less code.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Allow specifying the output dimensions

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Fix the text on the watermark

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Send further rendering options over dbus

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Allow to specify the output format

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Add a struct with further rendering options

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

client: Accept a --format argument

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

client: Add a basic client to fetch the graphs

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

module: Define all DEFs and VDEFs for any imported modules

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Cast arguments to void* to deal with API breakage

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Log the size of the generated output

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Write the graph to the output stream

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Import the default arguments from the Python implementation

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

Make Gettext available

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

Import some colours from the Python implementation

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Fix calling rrd_graph()

There is pretty much no documenation of librrd and the API has been
changed multiple times. Initially, various arguments have been labeled
optional, but that does not seem to be true for at least the
implementation I am testing against.

So we pass all variables that we function has, and we might as well
include them in the debugging output.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

args: Add function to add multiple pre-formatted arguments at once

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

module: Remove hack where the event loop stores the reference

This was needed when we did not have a proper registry for all modules,
but it seems that that is now the easier way.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Pass the object to the render function

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Add a helper function to pull in all data sources from a module

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Add a render function to jump into the individual graphs

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

modules: Add function to fetch a specific module by its name

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

daemon: Add function to fetch all modules

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Create the basic to render a graph

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Fix typo in variable name

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

daemon: Create a modules registry

Just like we have for graphs now

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Take the object name as first (and only) argument

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graph: Add a Render() method to the bus to render graphs

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Export them over dbus

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Add scaffolding for a loadavg graph

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

jenkins: Don't fail if the static analyzer didn't find any issues

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

daemon: Initialize all graphs when the daemon starts

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

daemon: Initialize all graphs when the daemon starts

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

daemon: Generalize the init/exit functions

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Add scaffolding for a graph collection

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

main: Log an error if we could not free all resources

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

graphs: Add scaffolding for a new object

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

daemon: Add a basic dbus interfaces for graphs

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

queue: Allocate the correct amount of memory

This has been found by the clang static analyzer.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

jenkins: The configure script does not have a --enable-debug switch

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

configure: Make lm-sensors an optional dependency

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

configure: Check for pkg-config before using it

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

configure: Make libatasmart an optional dependency

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

configure: Drop dependency to liboping

This won't be implemented in this daemon any more, but move to the
network daemon which is broadcasting the results over the bus.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

Drop the Python implementation

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

daemon: Export the version over dbus

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

Add a Jenkinsfile

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

po: Update langauge files

This is mainly to make "make distcheck" happy.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

daemon: Connect to dbus

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

module: Explicitely clear any RRD errors

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

Make secure_getenv available

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>