Browse Source

moved various apps to dezendorf/applications

Breandan Dezendorf 2 years ago
parent
commit
28c1ed5ebc
33 changed files with 1995 additions and 0 deletions
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      dezendorf/applications/astoria-hc/.gitignore
  2. 0 0
      dezendorf/applications/astoria-hc/BUILD
  3. 339 0
      dezendorf/applications/astoria-hc/LICENSE
  4. 73 0
      dezendorf/applications/astoria-hc/Makefile
  5. 33 0
      dezendorf/applications/astoria-hc/README.md
  6. 33 0
      dezendorf/applications/astoria-hc/cmd/BUILD.bazel
  7. 92 0
      dezendorf/applications/astoria-hc/cmd/main.go
  8. 34 0
      dezendorf/applications/astoria-hc/design.md
  9. 13 0
      dezendorf/applications/astoria-hc/go.mod
  10. 142 0
      dezendorf/applications/astoria-hc/go.sum
  11. 18 0
      dezendorf/applications/astoria-hc/internal/core/BUILD.bazel
  12. 180 0
      dezendorf/applications/astoria-hc/internal/core/app.go
  13. 53 0
      dezendorf/applications/astoria-hc/internal/core/gpio.go
  14. 16 0
      dezendorf/applications/astoria-hc/internal/core/homekit.go.bak
  15. 52 0
      dezendorf/applications/astoria-hc/internal/core/persist.go
  16. 19 0
      dezendorf/applications/astoria-hc/internal/core/web.go.bak
  17. 13 0
      dezendorf/applications/astoria-hc/internal/telemetry/BUILD.bazel
  18. 55 0
      dezendorf/applications/astoria-hc/internal/telemetry/prom.go
  19. 6 0
      dezendorf/applications/golink/BUILD.bazel
  20. 7 0
      dezendorf/applications/golink/cmd/main/main.go
  21. 3 0
      dezendorf/applications/golink/go.mod
  22. 18 0
      dezendorf/applications/occupancyd/.gitignore
  23. 0 0
      dezendorf/applications/occupancyd/BUILD
  24. 29 0
      dezendorf/applications/occupancyd/LICENSE
  25. 55 0
      dezendorf/applications/occupancyd/Makefile
  26. 35 0
      dezendorf/applications/occupancyd/README.md
  27. 11 0
      dezendorf/applications/occupancyd/go.mod
  28. 429 0
      dezendorf/applications/occupancyd/go.sum
  29. 18 0
      dezendorf/applications/occupancyd/internal/core/BUILD.bazel
  30. 133 0
      dezendorf/applications/occupancyd/internal/core/app.go
  31. 13 0
      dezendorf/applications/occupancyd/internal/telemetry/BUILD.bazel
  32. 39 0
      dezendorf/applications/occupancyd/internal/telemetry/prom.go
  33. 13 0
      dezendorf/applications/occupancyd/occupancyd.service

+ 21 - 0
dezendorf/applications/astoria-hc/.gitignore

@@ -0,0 +1,21 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+build
+
+# Dependency directories (remove the comment below to include it)
+vendor/
+
+espressod*
+
+Astoria*

+ 0 - 0
dezendorf/applications/astoria-hc/BUILD


+ 339 - 0
dezendorf/applications/astoria-hc/LICENSE

@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
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+distribute copies of the software, or if you modify it.
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+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
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+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
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+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
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+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
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+above, provided that you also meet all of these conditions:
+
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+
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+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
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+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
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+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
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+  3. You may copy and distribute the Program (or a work based on it,
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+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
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+countries not thus excluded.  In such case, this License incorporates
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+Software Foundation.  If the Program does not specify a version number of
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+Foundation.
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+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
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+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
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+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.

+ 73 - 0
dezendorf/applications/astoria-hc/Makefile

@@ -0,0 +1,73 @@
+HOST_USER := $(shell whoami)
+.PHONY: build
+
+build:
+	mkdir -p build
+
+	docker run \
+		--rm \
+		-e HOST_USER=$(HOST_USER) \
+		-v $(PWD):/build \
+		-w /build \
+		golang \
+		bash -c 'go mod vendor && go build -mod=vendor -o espressod cmd/main.go'
+	docker run \
+		--rm \
+		-e HOST_USER=$(HOST_USER) \
+		-e GOOS=linux \
+		-e GOARCH=arm \
+		-e GOARM=5 \
+                -v $(PWD):/build \
+                -w /build \
+                golang \
+                bash -c 'go mod vendor && go build -mod=vendor -o espressod_armv5 cmd/main.go'
+
+check: go_fmt go_lint go_vet
+
+go_fmt:
+	docker run \
+		--rm \
+		-v $(PWD):/installer \
+		-w /installer \
+		golang \
+		bash -c "find . -path ./vendor -prune -o -name '*.go' -exec gofmt -l {} \; | tee fmt.out && if [ -s fmt.out ] ; then exit 1; fi "
+
+
+go_vet:
+	docker run\
+		--rm \
+		-v $(PWD):/installer \
+		-w /installer \
+		golang \
+		bash -c "go vet ./..."
+
+go_lint:
+	docker run \
+		--rm \
+		-v $(PWD):/installer \
+		-w /installer \
+		golang \
+		bash -c 'go get golang.org/x/lint/golint && go list ./... | xargs -L1 golint -set_exit_status'
+
+run:
+	docker run \
+		--rm \
+		-v $(PWD):/build \
+		-w /build \
+		golang \
+		bash -c 'go run .'
+		
+
+docker:
+	docker build -t astoria-hc:latest . < Dockerfile
+
+deploy:
+	scp espressod_armv5 pi@astoria:espressod_armv5
+
+
+clean:
+	rm -f main
+	rm -f espressod
+	rm -f espressod_armv5
+	rm -rf build
+

+ 33 - 0
dezendorf/applications/astoria-hc/README.md

@@ -0,0 +1,33 @@
+# espressod
+Espresso Machine Control - HomeKit and Promtheus enabled
+
+```
+Usage of ./espressod:
+  -db string
+    	Database path (default "./db")
+  -gpio
+    	load gpio code (default true)
+  -maxTemp float
+    	Maximum temperature value (default 130)
+  -metrics
+    	Enable prometheus metrics (default true)
+  -minTemp float
+    	Minimum temperature value (default 10)
+  -name string
+    	Device name (default "Astoria Boiler Thermostat")
+  -pin string
+    	Homekit Pairing PIN (default "00102003")
+  -promPort int
+    	Port to reigster /metrics handler on (default 2112)
+  -stepTemp float
+    	Temperature setting step size (default 0.1)
+```
+
+# How to Use
+`espressod` is a standalone golang daemon that creates a Thermostat accessory for use in HomeKit. It also exposes most of the metrics relevant to the operation of the system via a prometheus instrumentation URI. Starting the daemon with no options will setup the accessory and try to control the boiler via a solid state relay. A momentary switch changes the setpoint from min to max and back.
+
+# Why I Wrote This
+
+I purchased a second hand commerical espresso machine a few years ago, and it is far too much work to turn it on and then wait the 30+ minutes for it to warm up fully. I was also concerend with how much power it was drawing. So I in-lined a 40A 250V Solid State Relay which I hooked to a raspberry pi, and wired a PT100 temperature sensor into the boiler. I now have very precise and very easy to automate temperature control of the machine.
+
+Some details can be found on [The Guru College](http://gurucollege.net/post/astoria-argenta-sae-project/).

+ 33 - 0
dezendorf/applications/astoria-hc/cmd/BUILD.bazel

@@ -0,0 +1,33 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
+
+go_library(
+    name = "lib",
+    srcs = ["main.go"],
+    importpath = "",
+    visibility = ["//visibility:private"],
+    deps = [
+        "@com_github_brutella_hc//:go_default_library",
+        "@com_github_brutella_hc//accessory:go_default_library",
+        "@com_github_bwdezend_astoria_hc//internal/core:go_default_library",
+        "@com_github_bwdezend_astoria_hc//internal/telemetry:go_default_library",
+    ],
+)
+
+go_binary(
+    name = "cmd",
+    embed = [":cmd_lib"],
+    visibility = ["//visibility:public"],
+)
+
+go_library(
+    name = "cmd_lib",
+    srcs = ["main.go"],
+    importpath = "github.com/example/project/dezendorf/astoria-hc/cmd",
+    visibility = ["//visibility:private"],
+    deps = [
+        "//dezendorf/astoria-hc/vendor/github.com/brutella/hc",
+        "//dezendorf/astoria-hc/vendor/github.com/brutella/hc/accessory",
+        "@com_github_bwdezend_astoria_hc//internal/core:go_default_library",
+        "@com_github_bwdezend_astoria_hc//internal/telemetry:go_default_library",
+    ],
+)

+ 92 - 0
dezendorf/applications/astoria-hc/cmd/main.go

@@ -0,0 +1,92 @@
+package main
+
+import (
+	"flag"
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/brutella/hc"
+	"github.com/brutella/hc/accessory"
+	"github.com/bwdezend/astoria-hc/internal/core"
+	"github.com/bwdezend/astoria-hc/internal/telemetry"
+)
+
+var acc accessory.Thermostat
+var deviceName = flag.String("name", "Astoria Boiler Thermostat", "Device name")
+var dbPath = flag.String("db", "./db", "Database path")
+var enableMetics = flag.Bool("metrics", true, "Enable prometheus metrics")
+var prometheusPort = flag.Int("promPort", 2112, "Port to reigster /metrics handler on")
+var temperatureMinimim = flag.Float64("minTemp", 10.0, "Minimum temperature value")
+var temperatureMaximum = flag.Float64("maxTemp", 130.0, "Maximum temperature value")
+var temperatureStepSize = flag.Float64("stepTemp", 0.1, "Temperature setting step size")
+var homekitPin = flag.String("pin", "00102003", "Homekit Pairing PIN")
+
+var gpio = flag.Bool("gpio", true, "load gpio code")
+
+func init() {
+	flag.Parse()
+	info := accessory.Info{
+		Name: *deviceName,
+	}
+
+	acc = *accessory.NewThermostat(info, 10.0, *temperatureMinimim, *temperatureMaximum, *temperatureStepSize)
+}
+
+func check(e error) {
+	if e != nil {
+		panic(e)
+	}
+}
+
+var p = 3.0
+
+func main() {
+	c := make(chan os.Signal)
+	signal.Notify(c, os.Interrupt, syscall.SIGTERM)
+	go func() {
+		<-c
+		os.Exit(0)
+	}()
+
+	config := hc.Config{Pin: *homekitPin}
+	t, err := hc.NewIPTransport(config, acc.Accessory)
+	check(err)
+	hc.OnTermination(func() {
+		t.Stop()
+	})
+
+	if *enableMetics {
+		go telemetry.PrometheusMetrics(*prometheusPort)
+	}
+
+	// Recover previously set temperature on program start
+	core.SetTargetTemp(acc, core.RecoverTemp())
+
+	// Picks up the current temperature every second from *path/current_temp
+	go core.GetCurrentTemp(acc)
+
+	// Run the PID loop itself
+	go core.TemperatureProportional(acc, *gpio)
+
+	// Enable the "boiler isn't heating" error handling
+	go core.TemperatureErrorDetection(acc)
+
+	// Runs the REST-y interface for adjusting the setpoint and causing the program to exit.
+	//go telemetry.SetpointHandler()
+
+	// If the -gpio flag is set to true load the Raspberry Pi gpio handling code.
+	if *gpio {
+		log.Println("rpi-gpio enabled - enabling power button on pin 26")
+		go core.PowerButton(acc)
+	}
+
+	// Enable the homekit code to change the setpoint
+	acc.Thermostat.TargetTemperature.OnValueRemoteUpdate(func(temp float64) {
+		core.SetTargetTemp(acc, temp)
+	})
+
+	t.Start()
+
+}

+ 34 - 0
dezendorf/applications/astoria-hc/design.md

@@ -0,0 +1,34 @@
+The system needs to do the following things:
+
+    operate a PID loop that:
+        reads from the temperature sensor
+        writes to the duty cycle
+        stores the error etc for PID
+
+    make available to homekit:
+        read the current temperature
+        write the desired temperature
+        read the off/heating/cooling status
+        write the off/heating/cooling status
+
+    make available to web interface:
+        read the current temperature
+        write the desired temperature
+        read the off/heating/cooling status
+        write the off/heating/cooling status
+
+    make available to promtheus interface:
+        current temperature
+        current heating/cooling
+        errors with things
+        metrics
+
+    core logic:
+        read/write the setpoint
+        read/write available the setpoint
+        read/write available the current temp
+        read/write available the state of off/heating/cooling
+    
+
+    read the current temperature from the MAX318650
+    operate a PID loop that con

+ 13 - 0
dezendorf/applications/astoria-hc/go.mod

@@ -0,0 +1,13 @@
+module github.com/bwdezend/astoria-hc
+
+go 1.13
+
+require (
+	github.com/brutella/hc v1.2.1
+	github.com/gorilla/mux v1.7.4 // indirect
+	github.com/prometheus/client_golang v1.5.1
+	github.com/stianeikeland/go-rpio v4.2.0+incompatible
+	github.com/vemo-france/max31865 v0.0.0-20190220090227-8f9a7d8ee8f3
+	golang.org/x/lint v0.0.0-20200302205851-738671d3881b // indirect
+	periph.io/x/periph v3.6.4+incompatible // indirect
+)

+ 142 - 0
dezendorf/applications/astoria-hc/go.sum

@@ -0,0 +1,142 @@
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+golang.org/x/sys v0.0.0-20200122134326-e047566fdf82 h1:ywK/j/KkyTHcdyYSZNXGjMwgmDSfjglYZ3vStQ/gSCU=
+golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
+golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
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+golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7 h1:EBZoQjiKKPaLbPrbpssUfuHtwM6KV/vb4U85g/cigFY=
+golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.5 h1:ymVxjfMaHvXD8RqPRmzHHsB3VvucivSkIAvJFDI5O3c=
+gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+periph.io/x/periph v3.6.4+incompatible h1:8FyXTbu9lcMVofz8mf+cj1pzTLN4V6EuPY2EF+DoJF4=
+periph.io/x/periph v3.6.4+incompatible/go.mod h1:EWr+FCIU2dBWz5/wSWeiIUJTriYv9v2j2ENBmgYyy7Y=

+ 18 - 0
dezendorf/applications/astoria-hc/internal/core/BUILD.bazel

@@ -0,0 +1,18 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "core",
+    srcs = [
+        "app.go",
+        "gpio.go",
+        "persist.go",
+    ],
+    importpath = "github.com/example/project/dezendorf/astoria-hc/internal/core",
+    visibility = ["//astoria-hc:__subpackages__"],
+    deps = [
+        "//dezendorf/astoria-hc/vendor/github.com/brutella/hc/accessory",
+        "//dezendorf/astoria-hc/vendor/github.com/stianeikeland/go-rpio",
+        "//dezendorf/astoria-hc/vendor/github.com/vemo-france/max31865",
+        "@com_github_bwdezend_astoria_hc//internal/telemetry:go_default_library",
+    ],
+)

+ 180 - 0
dezendorf/applications/astoria-hc/internal/core/app.go

@@ -0,0 +1,180 @@
+package core
+
+import (
+	"log"
+	"time"
+
+	"github.com/brutella/hc/accessory"
+	"github.com/bwdezend/astoria-hc/internal/telemetry"
+	"github.com/vemo-france/max31865"
+)
+
+var p = 3.0
+
+// GetCurrentTemp read from the MAX31865 to read
+// the current state of the steam side of the boiler temperature
+func GetCurrentTemp(acc accessory.Thermostat) {
+	if err := max31865.Init(); err != nil {
+		log.Fatalf("initialization failed : %s", err)
+	}
+	sensor := max31865.Create("8", "9", "10", "11")
+	var boilerTemperature float64
+	for {
+		boilerTemperature = float64(sensor.ReadTemperature(100, 430))
+		if boilerTemperature < 1.0 {
+			telemetry.SensorFaultCount.Inc()
+			log.Println("Sensor fault")
+		} else {
+			acc.Thermostat.CurrentTemperature.SetValue(boilerTemperature)
+			telemetry.CurrentTemperature.Set(boilerTemperature)
+		}
+		time.Sleep(500 * time.Millisecond)
+	}
+}
+
+// SetTargetTemp adjusts the setpoint for the PID loop and updates the homekit interfaces
+func SetTargetTemp(acc accessory.Thermostat, setTemp float64) {
+	if setTemp > 124.0 {
+		setTemp = 124.0
+	}
+
+	log.Printf("setting setpoint to %.2f", setTemp)
+	PersistTemp(setTemp)
+
+	acc.Thermostat.TargetTemperature.SetValue(setTemp)
+	telemetry.SetpointTemperature.Set(setTemp)
+}
+
+// HeaterWindow doc Take two inputs - the duration of the cycle and the proportion of the cycle
+// and turn the heating element on for that percentage of the cycle. If the
+// windowSize is 15.0 and the enabledTime is 0.7, this turns the heating element
+// on for 10.5 seconds and off for 4.5 seconds before returning
+func HeaterWindow(windowSize float64, enabledTime float64, gpioEnabled bool) {
+	var disabledTime float64 = 0
+	enabledTime = windowSize * enabledTime * 1000
+	disabledTime = windowSize*1000 - enabledTime
+
+	if enabledTime > 1000.0 {
+		enabledTime = 1000.0
+	}
+	if enabledTime > 0 {
+		if gpioEnabled {
+			HeaterControl(true)
+		}
+		time.Sleep(time.Duration(enabledTime) * time.Millisecond)
+		telemetry.SecondsActive.Add(enabledTime / 1000)
+	}
+	if gpioEnabled {
+		HeaterControl(false)
+	}
+	time.Sleep(time.Duration(disabledTime) * time.Millisecond)
+}
+
+// TemperatureProportional is a dead simple proportional control loop. Take the difference in setpoint
+// and current temp, multiply by the gain, and use the result to control
+// the duty cycle on the boiler, represented as a float between 0.0 and 1.0
+func TemperatureProportional(acc accessory.Thermostat, gpioEnabled bool) {
+
+	for {
+		current := 0.0
+		if gpioEnabled {
+			current = acc.Thermostat.CurrentTemperature.GetValue()
+		}
+		setpoint := acc.Thermostat.TargetTemperature.GetValue()
+		error := (setpoint - current) * p * 0.1
+
+		if error > 1.0 {
+			error = 1.0
+		}
+
+		if error < 0.01 {
+			error = 0.0
+		}
+
+		// log.Printf("Duty Cycle: %.2f, Current: %.2f, Setpoint: %.2f\n", error, current, setpoint)
+
+		HeaterWindow(1.0, error, gpioEnabled)
+
+	}
+}
+
+// TemperatureErrorDetection is a error handling function to turn the SSR off if the boiler doesn't
+// appear to be warming as a result of input. The most common reason for this
+// is that the power switch on the machine is turned off, but the timer still
+// fired. Less common reasons would be a heater element malfunction, a boiler
+// rupture, or a failure of the temperature sensor itself.
+func TemperatureErrorDetection(acc accessory.Thermostat) {
+
+	lastTemp := 0.0
+	countdown := 2
+	for {
+		setpoint := acc.Thermostat.TargetTemperature.GetValue()
+		time.Sleep(10 * time.Second)
+
+		current := acc.Thermostat.CurrentTemperature.GetValue()
+		error := (setpoint - current)
+
+		if error > 5.0 {
+			if lastTemp >= current {
+				if countdown > 0 {
+					log.Printf("Warning: boiler does not appear to be heating (%.2f gt %.2f). Countdown: %d", lastTemp, current, countdown)
+					countdown--
+				} else if countdown == 0 {
+					log.Printf("Error: boiler does not appear to be heating (%.2f gt %.2f). Changing setpoint to 0.0", lastTemp, current)
+					SetTargetTemp(acc, 0.0)
+					countdown = 2
+				}
+			}
+		} else if countdown < 2 {
+			log.Printf("Warning: boiler does not appear to be heating (%.2f gt %.2f). Countdown: %d", lastTemp, current, countdown)
+			countdown = 2
+		}
+		lastTemp = current
+	}
+}
+
+// Re-evaluate if we want to be able to set the temp from a REST endpoint
+// type updateVars struct {
+// 	Temperature float64 `json:"temperature,omitempty"`
+// 	Proportion  float64 `json:"proportion,omitempty"`
+// }
+//
+// // UpdateSettings doc
+// func UpdateSettings(w http.ResponseWriter, r *http.Request) {
+// 	var update updateVars
+// 	if r.Method == "POST" {
+// 		body, err := ioutil.ReadAll(io.LimitReader(r.Body, 1048576))
+// 		if err != nil {
+// 			http.Error(w, "Error reading request body",
+// 				http.StatusInternalServerError)
+// 		}
+// 		if err := r.Body.Close(); err != nil {
+// 			panic(err)
+// 		}
+//
+// 		if err := json.Unmarshal(body, &update); err != nil {
+// 			w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+// 			w.WriteHeader(422) // unprocessable entity
+// 			if err := json.NewEncoder(w).Encode(err); err != nil {
+// 				panic(err)
+// 			}
+// 		}
+// 		if update.Temperature != 0 {
+// 			SetTargetTemp(update.Temperature)
+// 		}
+// 		if update.Proportion != 0 {
+// 			log.Printf("updating p constant to %.2f\n", update.Proportion)
+// 			p = update.Proportion
+// 		}
+//
+// 	} else {
+// 		http.Error(w, "Invalid request method", http.StatusMethodNotAllowed)
+// 	}
+// }
+//
+// // SetpointHandler handles
+// func SetpointHandler() {
+// 	router := mux.NewRouter().StrictSlash(true)
+// 	router.HandleFunc("/update", UpdateSettings)
+// 	log.Fatal(http.ListenAndServe(":2113", router))
+// }

+ 53 - 0
dezendorf/applications/astoria-hc/internal/core/gpio.go

@@ -0,0 +1,53 @@
+package core
+
+import (
+	"log"
+	"time"
+
+	"github.com/brutella/hc/accessory"
+	"github.com/bwdezend/astoria-hc/internal/telemetry"
+	"github.com/stianeikeland/go-rpio"
+)
+
+func init() {
+	rpio.Open()
+}
+
+// PowerButton sets up the button hooked to pin 26
+// on the Rasberry Pi to act as a high/low control
+// for the system.
+func PowerButton(acc accessory.Thermostat) {
+	high := 124.0
+	low := 30.0
+
+	button := rpio.Pin(26)
+	button.Input()
+	button.PullUp()
+
+	for {
+		if button.Read() == 0 {
+			log.Println("button pressed")
+			if acc.Thermostat.TargetTemperature.GetValue() >= (high - 10.0) {
+				SetTargetTemp(acc, low)
+			} else {
+				SetTargetTemp(acc, high)
+			}
+			time.Sleep(500 * time.Millisecond)
+		}
+		time.Sleep(50 * time.Millisecond)
+	}
+}
+
+// HeaterControl turns on and off voltate to the
+// pin hooked to the Solid State Relay.
+func HeaterControl(on bool) {
+	pin := rpio.Pin(14)
+	pin.Output()
+
+	telemetry.RelayActivations.Inc()
+	if on {
+		pin.High()
+	} else {
+		pin.Low()
+	}
+}

+ 16 - 0
dezendorf/applications/astoria-hc/internal/core/homekit.go.bak

@@ -0,0 +1,16 @@
+package homekit
+
+import (
+	"flag"
+
+	"github.com/brutella/hc/accessory"
+)
+
+func init() {
+	flag.Parse()
+	info := accessory.Info{
+		Name: *deviceName,
+	}
+
+	acc = *accessory.NewThermostat(info, 10.0, *temperatureMinimim, *temperatureMaximum, *temperatureStepSize)
+}

+ 52 - 0
dezendorf/applications/astoria-hc/internal/core/persist.go

@@ -0,0 +1,52 @@
+package core
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"strconv"
+)
+
+func init() {
+
+}
+
+
+// PersistTemp creates a file in /dev/shm
+// and saves the setppoint temperature to it. Every time
+// the setupoint is changed, this function should be called
+// and will persist the value. This is not persistant across
+// system reboots.
+func PersistTemp(currentTemp float64) {
+	persistFile := "/dev/shm/persistFile"
+	f, err := os.OpenFile(persistFile, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
+	if err != nil {
+		log.Fatalf("persistence file write failed : %s", err)
+	}
+	defer f.Close()
+	fmt.Fprintf(f, "%f", currentTemp)
+	f.Sync()
+}
+
+// RecoverTemp is a companion to PersistTemp,
+// reading from the file in /dev/shm and setting the setpoint
+// at application startup.
+func RecoverTemp() (recoverTemp float64) {
+	recoverFile := "/dev/shm/persistFile"
+
+	log.Printf("reading setpoint from %s", recoverFile)
+
+	f, err := os.ReadFile(recoverFile)
+	if err != nil {
+		log.Fatalf("persistence file recovery failed: %s", err)
+	}
+
+	recoverTemp, err = strconv.ParseFloat(string(f), 64)
+	if err != nil {
+		log.Fatalf("persistence conversion failed: %s", err)
+	}
+
+	log.Printf("setting setpoint to %f", recoverTemp)
+	return recoverTemp
+
+}

+ 19 - 0
dezendorf/applications/astoria-hc/internal/core/web.go.bak

@@ -0,0 +1,19 @@
+package core
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/brutella/hc/accessory"
+)
+
+func powerToggle(w http.ResponseWriter, r *http.Request) {
+	TogglePower()
+	//os.Exit(0)
+}
+
+// WebInterface handles the prometheus scrape endpoint
+func WebInterface(acc accessory.Thermostat) {
+	http.HandleFunc("/power", powerToggle(acc))
+	http.ListenAndServe(fmt.Sprintf(":%d", 8192), nil)
+}

+ 13 - 0
dezendorf/applications/astoria-hc/internal/telemetry/BUILD.bazel

@@ -0,0 +1,13 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "telemetry",
+    srcs = ["prom.go"],
+    importpath = "github.com/example/project/dezendorf/astoria-hc/internal/telemetry",
+    visibility = ["//astoria-hc:__subpackages__"],
+    deps = [
+        "//dezendorf/astoria-hc/vendor/github.com/prometheus/client_golang/prometheus",
+        "//dezendorf/astoria-hc/vendor/github.com/prometheus/client_golang/prometheus/promauto",
+        "//dezendorf/astoria-hc/vendor/github.com/prometheus/client_golang/prometheus/promhttp",
+    ],
+)

+ 55 - 0
dezendorf/applications/astoria-hc/internal/telemetry/prom.go

@@ -0,0 +1,55 @@
+package telemetry
+
+import (
+	"fmt"
+	"net/http"
+	"os"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promauto"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+)
+
+var (
+	// SecondsActive is the number of seconds, since program start
+	//  that the heating elemnent has been active.
+	SecondsActive = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "heater_element_active_seconds",
+		Help: "The total number of seconds the heating element has been active",
+	})
+
+	// RelayActivations counts the number of times the relay has activated
+	RelayActivations = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "heater_element_activations_total",
+		Help: "The number of times the relay has been activated",
+	})
+
+	// CurrentTemperature is the current measured temperature in the boiler
+	CurrentTemperature = promauto.NewGauge(prometheus.GaugeOpts{
+		Name: "boiler_water_temperature_celsius",
+		Help: "The current temperature of the water in the boiler",
+	})
+
+	// SetpointTemperature is the desired temperature
+	SetpointTemperature = promauto.NewGauge(prometheus.GaugeOpts{
+		Name: "setpoint_temperature_celsius",
+		Help: "The current setpoint temperature",
+	})
+
+	// SensorFaultCount is the desired temperature
+	SensorFaultCount = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "sensor_fault_total",
+		Help: "The number of times the sensor has read faulty data",
+	})
+)
+
+func exitProgram(w http.ResponseWriter, r *http.Request) {
+	os.Exit(0)
+}
+
+// PrometheusMetrics handles the prometheus scrape endpoint
+func PrometheusMetrics(prometheusPort int) {
+	http.Handle("/metrics", promhttp.Handler())
+	http.HandleFunc("/exit", exitProgram)
+	http.ListenAndServe(fmt.Sprintf(":%d", prometheusPort), nil)
+}

+ 6 - 0
dezendorf/applications/golink/BUILD.bazel

@@ -0,0 +1,6 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_binary")
+
+go_binary(
+  name = "cmd",
+  srcs = ["cmd/main/main.go"],
+)

+ 7 - 0
dezendorf/applications/golink/cmd/main/main.go

@@ -0,0 +1,7 @@
+package main
+
+import "fmt"
+
+func main() {
+  fmt.Println("Hello!")
+}

+ 3 - 0
dezendorf/applications/golink/go.mod

@@ -0,0 +1,3 @@
+module main
+
+go 1.19

+ 18 - 0
dezendorf/applications/occupancyd/.gitignore

@@ -0,0 +1,18 @@
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+occupancyd
+
+# Dependency directories (remove the comment below to include it)
+vendor/
+db/

+ 0 - 0
dezendorf/applications/occupancyd/BUILD


+ 29 - 0
dezendorf/applications/occupancyd/LICENSE

@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2020, Breandan Dezendorf
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

+ 55 - 0
dezendorf/applications/occupancyd/Makefile

@@ -0,0 +1,55 @@
+.PHONY: test
+
+build: check
+	go build -o occupancyd cmd/occupancyd/*go 
+
+
+check: go_fmt go_lint go_vet
+
+go_fmt:
+	docker run \
+		--rm \
+		-v $(PWD):/installer \
+		-w /installer \
+		golang \
+		bash -c "find . -path ./vendor -prune -o -name '*.go' -exec gofmt -l {} \; | tee fmt.out && if [ -s fmt.out ] ; then exit 1; fi "
+
+
+go_vet:
+	docker run\
+		--rm \
+		-v $(PWD):/installer \
+		-w /installer \
+		golang \
+		bash -c "go vet ./..."
+
+go_lint:
+	docker run \
+		--rm \
+		-v $(PWD):/installer \
+		-w /installer \
+		golang \
+		bash -c 'go get golang.org/x/lint/golint && go list ./... | xargs -L1 golint -set_exit_status'
+
+
+debug:
+	go run *go -debug -sleep 30
+
+run:
+	go run cmd/occupancyd/*go 
+
+
+install:
+	systemctl --user stop occupancyd
+	sudo cp occupancyd /usr/local/bin/occupancyd 
+	sudo chmod +x /usr/local/bin/occupancyd
+	systemctl --user start occupancyd
+
+deploy: build install
+
+test:
+	go run *go -sleep 10
+
+clean:
+	-rm occupancyd
+	-rm fmt.out

+ 35 - 0
dezendorf/applications/occupancyd/README.md

@@ -0,0 +1,35 @@
+# occupancyd
+HomeKit daemon to set an occupancy sensor based on x11 idle status
+
+```
+Usage of occupancyd:
+  -db string
+    	Database path (default "./db")
+  -idle int
+    	Idle time in seconds to consider unoccupied (default 300)
+  -metrics
+    	Enable prometheus metrics (default true)
+  -name string
+    	Device name (default hostname)
+  -pin string
+    	Homekit Accessory PIN (default "12344321")
+  -promPort int
+    	Port to reigster /metrics handler on (default 2112)
+  -sleep int
+    	Sleep interval between occupancy checks (default 2)
+```
+
+## Use
+Runnning occupancyd is fairly straightforward. With no options set, it brings up a HomeKit device named after the `hostname` of the running system, with a idle timer of 300 seconds and a poll interval of 2 seconds. Every two seconds, it checks the X server to see if the MsSinceUserInput time is greater than the desired idletime, and if so, updates the occupancy sensor.
+
+HomeKit automations can be used to trigger lights and other settings in your home. `occupancyd` also exposes the displays attached to the host system as a Lightbulb accessory, so these can also be turned on and off via XDPMS, and can be integrated into the occupancy automation. This serves to forcibly power off the displays when, for example, the lights in the room are also turned off.
+
+`occupancyd` uses xgb to query the display power state and the idle time. Earlier versions of the daemon used `cmd`.
+
+`occupancyd` also exports prometheus metrics, by default on port `2112`.
+
+## Reasons This Exists
+
+I wrote this for a few reasons. The first was my power management settings in i3wm weren't working as well as I like, and I have a pair of Apple 30" Cinema Displays attached to my primary desktop. These things run hot, and use a lot of power. After a few days of unreliably putting them to sleep, I decided I wanted to have more visibility, so I started writing a simple daemon to use brutella's HomeKit module to implement XDPMS as a Lightbulb. I quickly realized that it would be better done as a lightbulb and occupancy sensor, so the HomeKit controlled office light automation would cover the screens power state as well.
+
+A no good deed goes unpunished, I also added prometheus metrics, be default on port `2112` to keep an eye on if the daemon was running as well as tell me how much I used the computer. `occupancyd_idle_seconds` is the number of seconds the X server thinks it has been since user input.

+ 11 - 0
dezendorf/applications/occupancyd/go.mod

@@ -0,0 +1,11 @@
+module github.com/bwdezend/occupancyd
+
+go 1.13
+
+require (
+	github.com/BurntSushi/xgb v0.0.0-20201008132610-5f9e7b3c49cd
+	github.com/BurntSushi/xgbutil v0.0.0-20190907113008-ad855c713046
+	github.com/brutella/hc v1.2.3
+	github.com/prometheus/client_golang v1.8.0
+	golang.org/x/lint v0.0.0-20200302205851-738671d3881b // indirect
+)

+ 429 - 0
dezendorf/applications/occupancyd/go.sum

@@ -0,0 +1,429 @@
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+ 18 - 0
dezendorf/applications/occupancyd/internal/core/BUILD.bazel

@@ -0,0 +1,18 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "core",
+    srcs = ["app.go"],
+    importpath = "github.com/example/project/dezendorf/occupancyd/internal/core",
+    visibility = ["//dezendorf/occupancyd:__subpackages__"],
+    deps = [
+        "//dezendorf/occupancyd/vendor/github.com/brutella/hc/accessory",
+        "//dezendorf/occupancyd/vendor/github.com/brutella/hc/log",
+        "//dezendorf/occupancyd/vendor/github.com/brutella/hc/service",
+        "@com_github_burntsushi_xgb//:go_default_library",
+        "@com_github_burntsushi_xgb//dpms:go_default_library",
+        "@com_github_burntsushi_xgb//screensaver:go_default_library",
+        "@com_github_burntsushi_xgb//xproto:go_default_library",
+        "@com_github_bwdezend_occupancyd//internal/telemetry:go_default_library",
+    ],
+)

+ 133 - 0
dezendorf/applications/occupancyd/internal/core/app.go

@@ -0,0 +1,133 @@
+package core
+
+import (
+	"time"
+
+	"github.com/BurntSushi/xgb/screensaver"
+	"github.com/BurntSushi/xgb/xproto"
+
+	"github.com/brutella/hc/accessory"
+	"github.com/brutella/hc/log"
+	"github.com/brutella/hc/service"
+	"github.com/bwdezend/occupancyd/internal/telemetry"
+
+	"github.com/BurntSushi/xgb"
+	"github.com/BurntSushi/xgb/dpms"
+)
+
+//CheckOccupied checks for x11 idle time
+func CheckOccupied(X *xgb.Conn, idleTimerDuration uint32, enableMetrics bool) bool {
+
+	screensaver.Init(X)
+	root := xproto.Setup(X).DefaultScreen(X).Root
+	info, err := screensaver.QueryInfo(X, xproto.Drawable(root)).Reply()
+
+	if err != nil {
+		log.Info.Println(err)
+		panic(err)
+	}
+
+	//log.Info.Println(info.MsSinceUserInput)
+
+	if enableMetrics == true {
+		telemetry.IdleTime.Set(float64(info.MsSinceUserInput / 1000))
+	}
+	if info.MsSinceUserInput < (idleTimerDuration * 1000) {
+		return true
+	}
+	return false
+}
+
+//UpdateOccupiedStatus sets occupied status
+func UpdateOccupiedStatus(sensor service.OccupancySensor, idleTimerDuration uint32, sleepInterval int, enableMetrics bool) {
+
+	X, err := xgb.NewConn()
+	if err != nil {
+		log.Info.Println(err)
+		panic(err)
+	}
+
+	occupancyState := CheckOccupied(X, idleTimerDuration, enableMetrics)
+	if occupancyState == true {
+		sensor.OccupancyDetected.Int.SetValue(1)
+	} else {
+		sensor.OccupancyDetected.Int.SetValue(0)
+	}
+
+	for {
+		occupied := CheckOccupied(X, idleTimerDuration, enableMetrics)
+		if occupied != occupancyState {
+			telemetry.OccupancyActivations.Inc()
+			log.Info.Println("Setting occupancy to", occupied)
+			occupancyState = occupied
+		}
+		if occupied == true {
+			sensor.OccupancyDetected.Int.SetValue(1)
+		} else {
+			sensor.OccupancyDetected.Int.SetValue(0)
+		}
+		time.Sleep(time.Second * time.Duration(sleepInterval))
+	}
+}
+
+//UpdateScreenStatus updates HomeKit Lightbulb screen status
+func UpdateScreenStatus(screen accessory.Lightbulb, sleepInterval int) error {
+	X, err := xgb.NewConn()
+	if err != nil {
+		return err
+	}
+
+	screenState := CheckScreen(X)
+
+	log.Info.Println("UpdateScreenStatus setting screen.Lightbulb.On.SetValue to", screenState)
+	if screenState == true {
+		screen.Lightbulb.On.SetValue(true)
+	} else {
+		screen.Lightbulb.On.SetValue(false)
+	}
+
+	for {
+		powered := CheckScreen(X)
+		if powered != screenState {
+			log.Info.Println("Setting screen to", powered)
+			screenState = powered
+
+			if powered == true {
+				screen.Lightbulb.On.SetValue(true)
+			} else {
+				screen.Lightbulb.On.SetValue(false)
+			}
+		}
+		time.Sleep(time.Second * time.Duration(sleepInterval))
+	}
+}
+
+//CheckScreen looks up the current state of DPMS
+func CheckScreen(X *xgb.Conn) bool {
+
+	dpms.Init(X)
+	info, err := dpms.Info(X).Reply()
+	if err != nil {
+		log.Info.Println("ERROR:", err)
+	}
+	return info.State
+}
+
+//SetScreenPower toggles dpms states
+func SetScreenPower(powerState bool) bool {
+	telemetry.LightbulbActivations.Inc()
+	X, err := xgb.NewConn()
+	if err != nil {
+		log.Info.Println(err)
+	}
+	dpms.Init(X)
+	var state uint16
+	state = 0
+	if powerState == false {
+		state = 3
+	}
+
+	dpms.ForceLevel(X, state)
+
+	return true
+}

+ 13 - 0
dezendorf/applications/occupancyd/internal/telemetry/BUILD.bazel

@@ -0,0 +1,13 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "telemetry",
+    srcs = ["prom.go"],
+    importpath = "github.com/example/project/dezendorf/occupancyd/internal/telemetry",
+    visibility = ["//dezendorf/occupancyd:__subpackages__"],
+    deps = [
+        "@com_github_prometheus_client_golang//prometheus:go_default_library",
+        "@com_github_prometheus_client_golang//prometheus/promauto:go_default_library",
+        "@com_github_prometheus_client_golang//prometheus/promhttp:go_default_library",
+    ],
+)

+ 39 - 0
dezendorf/applications/occupancyd/internal/telemetry/prom.go

@@ -0,0 +1,39 @@
+package telemetry
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promauto"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+)
+
+var (
+	//LightbulbActivations is a counter for the number of times the screen
+	// has changed power states
+	LightbulbActivations = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "occupancyd_lightbulb_activations",
+		Help: "The number of times the screen has changed power states",
+	})
+
+	//OccupancyActivations is a counter for the number of times the occupancy
+	// sensor has changed state
+	OccupancyActivations = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "occupancyd_occupancy_activations",
+		Help: "The number of times the occupancy sensor has changed state",
+	})
+
+	//IdleTime is a counter for the number of idle seconds, reported by xgb
+	IdleTime = promauto.NewGauge(prometheus.GaugeOpts{
+		Name: "occupancyd_idle_seconds",
+		Help: "Number of seconds x11 has been idle",
+	})
+)
+
+//PrometheusMetricsHandler Turn on promtheus metrics handler
+func PrometheusMetricsHandler(promPort int) {
+	serveAddress := fmt.Sprintf(":%d", promPort)
+	http.Handle("/metrics", promhttp.Handler())
+	http.ListenAndServe(serveAddress, nil)
+}

+ 13 - 0
dezendorf/applications/occupancyd/occupancyd.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=OccupancyD
+After=network.target auditd.service
+
+[Service]
+ExecStart=/usr/local/bin/occupancyd -db ~/.occupancyd/db
+
+Restart=always
+Type=simple
+RestartSec=10s
+
+[Install]
+WantedBy=default.target