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10 changed files with 49 additions and 187 deletions

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@ -1,5 +1,5 @@
# Use buildx for multi-architecture support
FROM --platform=${BUILDPLATFORM} golang:1.23 AS builder
FROM --platform=${BUILDPLATFORM} golang:1.22 AS builder
WORKDIR /app
@ -11,10 +11,7 @@ RUN go mod download
COPY . .
# Build the application for the specified target architecture
# https://www.docker.com/blog/faster-multi-platform-builds-dockerfile-cross-compilation-guide/
# Declare TARGETOS and TARGETARCH in the local scope so they can be used in the build stage.
ARG TARGETOS TARGETARCH
RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -o opendtu-logger .
RUN CGO_ENABLED=0 GOOS=linux GOARCH=${TARGETARCH} go build -o opendtu-logger .
# Create a minimal runtime image
FROM --platform=${TARGETPLATFORM} scratch

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@ -26,13 +26,9 @@ services:
restart: always
environment:
DB_URL: ${DB_URL}
OPENDTU_ADDRESS: ${OPENDTU_ADDRESS}
OPENDTU_AUTH: ${OPENDTU_AUTH}
OPENDTU_USERNAME: ${OPENDTU_USERNAME}
OPENDTU_PASSWORD: ${OPENDTU_PASSWORD}
REMOTE_URL: ${REMOTE_URL}
TIMESCALEDB_ENABLED: ${TIMESCALEDB_ENABLED}
TZ: ${TZ}
LOG_LEVEL: ${LOG_LEVEL}
depends_on:
timescaledb:
condition: service_healthy

View file

@ -26,14 +26,9 @@ services:
image: git.hollander.online/energy/opendtu-logger:latest
environment:
DB_URL: ${DB_URL}
OPENDTU_ADDRESS: ${OPENDTU_ADDRESS}
OPENDTU_AUTH: ${OPENDTU_AUTH}
OPENDTU_USERNAME: ${OPENDTU_USERNAME}
OPENDTU_PASSWORD: ${OPENDTU_PASSWORD}
REMOTE_URL: ${REMOTE_URL}
TIMESCALEDB_ENABLED: ${TIMESCALEDB_ENABLED}
TZ: ${TZ}
LOG_LEVEL: ${LOG_LEVEL}
depends_on:
timescaledb:
condition: service_healthy

View file

@ -5,13 +5,9 @@ services:
image: git.hollander.online/energy/opendtu-logger:latest
environment:
DB_URL: ${DB_URL}
OPENDTU_ADDRESS: ${OPENDTU_ADDRESS}
OPENDTU_AUTH: ${OPENDTU_AUTH}
OPENDTU_USERNAME: ${OPENDTU_USERNAME}
OPENDTU_PASSWORD: ${OPENDTU_PASSWORD}
REMOTE_URL: ${REMOTE_URL}
TIMESCALEDB_ENABLED: ${TIMESCALEDB_ENABLED}
TZ: ${TZ}
LOG_LEVEL: ${LOG_LEVEL}
depends_on:
timescaledb:
condition: service_healthy

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@ -1,11 +0,0 @@
# OpenDTU
OPENDTU_ADDRESS="192.168.1.89:80"
OPENDTU_AUTH=false
OPENDTU_USERNAME=admin
OPENDTU_PASSWORD=
# OpenDTU Logger
DB_URL="host=timescaledb port=5432 user=postgres password=secret dbname=opendtu_logger sslmode=disable"
TIMESCALEDB_ENABLED=true
TZ="Europe/Amsterdam"
LOG_LEVEL=INFO"

View file

@ -1,16 +1,9 @@
# OpenDTU
OPENDTU_ADDRESS="192.168.1.89:80"
OPENDTU_AUTH=false
OPENDTU_USERNAME=admin
OPENDTU_PASSWORD=
# OpenDTU Logger
REMOTE_URL="192.168.1.89:80"
DB_URL="host=timescaledb port=5432 user=postgres password=secret dbname=opendtu_logger sslmode=disable"
TIMESCALEDB_ENABLED=true
TZ="Europe/Amsterdam"
LOG_LEVEL=INFO"
# Database configuration
PG_USER=postgres
PG_PASSWORD=
PG_DB=opendtu_logger
PG_DB=opendtu_logger

9
go.mod
View file

@ -1,16 +1,17 @@
module git.hollander.online/energy/opendtu-logger
go 1.23
go 1.22
require (
github.com/gorilla/websocket v1.5.3
github.com/lib/pq v1.10.9
github.com/pressly/goose/v3 v3.22.0
github.com/pressly/goose/v3 v3.21.1
)
require (
github.com/mfridman/interpolate v0.0.2 // indirect
github.com/sethvargo/go-retry v0.3.0 // indirect
github.com/sethvargo/go-retry v0.2.4 // indirect
go.uber.org/multierr v1.11.0 // indirect
golang.org/x/sync v0.8.0 // indirect
golang.org/x/net v0.27.0 // indirect
golang.org/x/sync v0.7.0 // indirect
)

33
go.sum
View file

@ -4,6 +4,8 @@ github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkp
github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/gorilla/websocket v1.5.1 h1:gmztn0JnHVt9JZquRuzLw3g4wouNVzKL15iLr/zn/QY=
github.com/gorilla/websocket v1.5.1/go.mod h1:x3kM2JMyaluk02fnUJpQuwD2dCS5NDG2ZHL0uE0tcaY=
github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs4luLUK2k=
@ -18,32 +20,37 @@ github.com/ncruces/go-strftime v0.1.9 h1:bY0MQC28UADQmHmaF5dgpLmImcShSi2kHU9XLdh
github.com/ncruces/go-strftime v0.1.9/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/pressly/goose/v3 v3.22.0 h1:wd/7kNiPTuNAztWun7iaB98DrhulbWPrzMAaw2DEZNw=
github.com/pressly/goose/v3 v3.22.0/go.mod h1:yJM3qwSj2pp7aAaCvso096sguezamNb2OBgxCnh/EYg=
github.com/pressly/goose/v3 v3.21.1 h1:5SSAKKWej8LVVzNLuT6KIvP1eFDuPvxa+B6H0w78buQ=
github.com/pressly/goose/v3 v3.21.1/go.mod h1:sqthmzV8PitchEkjecFJII//l43dLOCzfWh8pHEe+vE=
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
github.com/sethvargo/go-retry v0.3.0 h1:EEt31A35QhrcRZtrYFDTBg91cqZVnFL2navjDrah2SE=
github.com/sethvargo/go-retry v0.3.0/go.mod h1:mNX17F0C/HguQMyMyJxcnU471gOZGxCLyYaFyAZraas=
github.com/sethvargo/go-retry v0.2.4 h1:T+jHEQy/zKJf5s95UkguisicE0zuF9y7+/vgz08Ocec=
github.com/sethvargo/go-retry v0.2.4/go.mod h1:1afjQuvh7s4gflMObvjLPaWgluLLyhA1wmVZ6KLpICw=
github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0=
go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/net v0.23.0 h1:7EYJ93RZ9vYSZAIb2x3lnuvqO5zneoD6IvWjuhfxjTs=
golang.org/x/net v0.23.0/go.mod h1:JKghWKKOSdJwpW2GEx0Ja7fmaKnMsbu+MWVZTokSYmg=
golang.org/x/net v0.27.0 h1:5K3Njcw06/l2y9vpGCSdcxWOYHOUk3dVNGDXN+FvAys=
golang.org/x/net v0.27.0/go.mod h1:dDi0PyhWNoiUOrAS8uXv/vnScO4wnHQO4mj9fn/RytE=
golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI=
golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6 h1:5D53IMaUuA5InSeMu9eJtlQXS2NxAhyWQvkKEgXZhHI=
modernc.org/gc/v3 v3.0.0-20240107210532-573471604cb6/go.mod h1:Qz0X07sNOR1jWYCrJMEnbW/X55x206Q7Vt4mz6/wHp4=
modernc.org/libc v1.55.3 h1:AzcW1mhlPNrRtjS5sS+eW2ISCgSOLLNyFzRh/V3Qj/U=
modernc.org/libc v1.55.3/go.mod h1:qFXepLhz+JjFThQ4kzwzOjA/y/artDeg+pcYnY+Q83w=
modernc.org/libc v1.41.0 h1:g9YAc6BkKlgORsUWj+JwqoB1wU3o4DE3bM3yvA3k+Gk=
modernc.org/libc v1.41.0/go.mod h1:w0eszPsiXoOnoMJgrXjglgLuDy/bt5RR4y3QzUUeodY=
modernc.org/mathutil v1.6.0 h1:fRe9+AmYlaej+64JsEEhoWuAYBkOtQiMEU7n/XgfYi4=
modernc.org/mathutil v1.6.0/go.mod h1:Ui5Q9q1TR2gFm0AQRqQUaBWFLAhQpCwNcuhBOSedWPo=
modernc.org/memory v1.8.0 h1:IqGTL6eFMaDZZhEWwcREgeMXYwmW83LYW8cROZYkg+E=
modernc.org/memory v1.8.0/go.mod h1:XPZ936zp5OMKGWPqbD3JShgd/ZoQ7899TUuQqxY+peU=
modernc.org/sqlite v1.32.0 h1:6BM4uGza7bWypsw4fdLRsLxut6bHe4c58VeqjRgST8s=
modernc.org/sqlite v1.32.0/go.mod h1:UqoylwmTb9F+IqXERT8bW9zzOWN8qwAIcLdzeBZs4hA=
modernc.org/memory v1.7.2 h1:Klh90S215mmH8c9gO98QxQFsY+W451E8AnzjoE2ee1E=
modernc.org/memory v1.7.2/go.mod h1:NO4NVCQy0N7ln+T9ngWqOQfi7ley4vpwvARR+Hjw95E=
modernc.org/sqlite v1.29.6 h1:0lOXGrycJPptfHDuohfYgNqoe4hu+gYuN/pKgY5XjS4=
modernc.org/sqlite v1.29.6/go.mod h1:S02dvcmm7TnTRvGhv8IGYyLnIt7AS2KPaB1F/71p75U=
modernc.org/strutil v1.2.0 h1:agBi9dp1I+eOnxXeiZawM8F4LawKv4NzGWSaLfyeNZA=
modernc.org/strutil v1.2.0/go.mod h1:/mdcBmfOibveCTBxUl5B5l6W+TTH1FXPLHZE6bTosX0=
modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=

139
main.go
View file

@ -1,15 +1,14 @@
// TODO: Storage optimisation: Map inverter serial to shorter serial. Use that for referring.
// TODO: Use username and password provided using Basic Authentication.
// TODO: Record Inverter struct data only on-change.
// Idea: Make a full admin / config GUI and only configure through this utility.
// Idea: Gather settings only on start-up.
// TODO: Only update meter readings such as yieldday, yieldtotal on-change.
// TODO: Add a health check endpoint, potentially log to it.
// TODO: Add support for monitoring multiple OpenDTU's at once.
package main
import (
"database/sql"
"encoding/base64"
"encoding/json"
"fmt"
"io/fs"
@ -150,14 +149,10 @@ type InverterSettingsData struct {
// Config settings struct
type Config struct {
DB string `json:"db"`
OpenDTUAddress string `json:"opendtu_address"`
OpenDTUAuth bool `json:"opendtu_auth"`
OpenDTUUser string `json:"opendtu_username"`
OpenDTUPassword string `json:"opendtu_password"`
TimescaleDB bool `json:"timescaledb"`
TZ string `json:"tz"`
LogLevel string `json:"log_level"`
DB string `json:"db"`
OpenDTU string `json:"opendtu"`
TimescaleDB bool `json:"timescaledb"`
TZ string `json:"tz"`
}
var logger = slog.New(slog.NewJSONHandler(os.Stdout, nil))
@ -178,50 +173,15 @@ func loadConfig() Config {
if err != nil {
log.Fatalf("Error parsing config file: %v", err)
}
if config.DB == "" {
log.Fatal("db connection settings are not set")
}
if config.OpenDTUAddress == "" {
log.Fatal("opendtu_address is not set")
}
if config.OpenDTUAuth {
if config.OpenDTUUser == "" {
log.Fatal("opendtu_username is not set, while opendtu_auth is set to enabled. Set opendtu_auth to false or set username")
}
if config.OpenDTUPassword == "" {
log.Fatal("opendtu_password is not set, while opendtu_auth is set to enabled. Set opendtu_auth to false or set password")
}
}
} else {
logger.Info("JSON config file not found. Falling back to environment variables.")
// Fallback to environment variables
config.DB = os.Getenv("DB_URL")
if config.DB == "" {
log.Fatal("DB_URL environment variable is not set.")
}
config.OpenDTUAddress = os.Getenv("OPENDTU_ADDRESS")
if config.OpenDTUAddress == "" {
log.Fatal("OPENDTU_ADDRESS environment variable is not set.")
}
openDTUAuthStr := os.Getenv("OPENDTU_AUTH")
if openDTUAuthStr != "" {
openDTUAuth, err := strconv.ParseBool(openDTUAuthStr)
if err != nil {
log.Fatalf("Error parsing OPENDTU_AUTH: %v", err)
}
config.OpenDTUAuth = openDTUAuth
}
if config.OpenDTUAuth {
config.OpenDTUUser = os.Getenv("OPENDTU_USERNAME")
if config.OpenDTUUser == "" {
log.Fatal("OPENDTU_USERNAME environment variable is not set.")
}
config.OpenDTUPassword = os.Getenv("OPENDTU_PASSWORD")
if config.OpenDTUPassword == "" {
log.Fatal("OPENDTU_PASSWORD environment variable is not set.")
}
config.OpenDTU = os.Getenv("REMOTE_URL")
if config.OpenDTU == "" {
log.Fatal("REMOTE_URL environment variable is not set.")
}
timescaleDBStr := os.Getenv("TIMESCALEDB_ENABLED")
@ -233,40 +193,11 @@ func loadConfig() Config {
config.TimescaleDB = timescaleDB
}
config.TZ = os.Getenv("TZ")
config.LogLevel = os.Getenv("LOG_LEVEL")
}
_, err = time.LoadLocation(config.TZ)
if err != nil {
logger.Warn("invalid timezone")
}
return config
}
// Helper function to map environment variable to slog.Level
func getLogLevel(defaultLevel slog.Level) slog.Level {
logLevelStr := config.LogLevel
switch logLevelStr {
case "DEBUG":
return slog.LevelDebug
case "INFO":
return slog.LevelInfo
case "WARN":
return slog.LevelWarn
case "ERROR":
return slog.LevelError
default:
return defaultLevel
}
}
// Function to create a new logger with a specified log level
func createLoggerWithLevel(level slog.Level) *slog.Logger {
return slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
Level: level,
}))
}
// Main program
func main() {
// Initial logger setup
@ -275,10 +206,6 @@ func main() {
// Load the configuration
config := loadConfig()
// Set the logLevel
logLevel := getLogLevel(slog.LevelInfo) // Default to info level
logger = createLoggerWithLevel(logLevel)
dbConnStr := config.DB
// Connect to PostgreSQL
db, err := sql.Open("postgres", dbConnStr)
@ -291,18 +218,10 @@ func main() {
migrateDB(db)
// Create WebSocket URL from config variable
wsURL := "ws://" + config.OpenDTUAddress + "/livedata"
logger.Debug(wsURL)
// Create headers with optional Basic Auth
headers := http.Header{}
if config.OpenDTUAuth {
headers.Set("Authorization", basicAuth(config.OpenDTUUser, config.OpenDTUPassword))
}
wsURL := "ws://" + config.OpenDTU + "/livedata"
// Establish WebSocket connection
c, _, err := websocket.DefaultDialer.Dial(wsURL, headers)
c, _, err := websocket.DefaultDialer.Dial(wsURL, nil)
if err != nil {
log.Fatal(err)
}
@ -505,33 +424,15 @@ func migrateFS(db *sql.DB, migrationFS fs.FS, dir string) error {
}
func queryEventsEndpoint(inverterSerial string) (*EventsResponse, error) {
endpoint := fmt.Sprintf("http://"+config.OpenDTUAddress+"/api/eventlog/status?inv=%s", inverterSerial)
remoteURL := config.OpenDTU
endpoint := fmt.Sprintf("http://"+remoteURL+"/api/eventlog/status?inv=%s", inverterSerial)
// Create a new HTTP request
req, err := http.NewRequest("GET", endpoint, nil)
if err != nil {
return nil, err
}
if config.OpenDTUAuth {
// Add Basic Auth header
req.Header.Add("Authorization", basicAuth(config.OpenDTUUser, config.OpenDTUPassword))
}
// Send the request
client := &http.Client{}
resp, err := client.Do(req)
resp, err := http.Get(endpoint)
if err != nil {
return nil, err
}
defer resp.Body.Close()
// Check for HTTP errors
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("HTTP request failed with status: %s", resp.Status)
}
// Decode the response
var eventsResponse EventsResponse
if err := json.NewDecoder(resp.Body).Decode(&eventsResponse); err != nil {
return nil, err
@ -564,9 +465,7 @@ func getPreviousEventsCount(db *sql.DB, inverterSerial string) int {
}
func insertEvents(db *sql.DB, inverterSerial string, events *EventsResponse) {
timeZone := config.TZ
loc, _ := time.LoadLocation(timeZone)
timestamp := time.Now().In(loc)
timestamp := time.Now()
for _, event := range events.Events {
// Insert events data into the events table
@ -609,12 +508,6 @@ func updateEvents(db *sql.DB, inverterSerial string, events *EventsResponse) {
}
}
// basicAuth generates the Basic Auth header value
func basicAuth(username, password string) string {
credentials := username + ":" + password
return "Basic " + base64.StdEncoding.EncodeToString([]byte(credentials))
}
// TODO: finish this function.
// func updateInverterConfig(db *sql.DB) {
// // Periodically query the /api/inverter/list
@ -633,8 +526,8 @@ func basicAuth(username, password string) string {
// }
// func queryConfigEndpoint() (*InverterSettingsData, error) {
// openDTUAddress := os.Getenv("OPENDTU_ADDRESS")
// endpoint := fmt.Sprintf("http://" + openDTUAddress + "/api/inverter/list")
// remoteURL := os.Getenv("REMOTE_URL")
// endpoint := fmt.Sprintf("http://" + remoteURL + "/api/inverter/list")
// resp, err := http.Get(endpoint)
// if err != nil {

View file

@ -16,15 +16,10 @@ Type=simple
User=opendtu-logger
Group=opendtu-logger
Environment="OPENDTU_ADDRESS=opendtu.local:80"
Environment="OPENDTU_AUTH=false"
Environment="OPENDTU_USERNAME=admin"
Environment="OPENDTU_PASSWORD=your_super_secret_password"
Environment="REMOTE_URL=opendtu.local:80"
Environment="DB_URL=host=localhost port=5432 user=postgres password=secret dbname=dtu sslmode=disable"
Environment="TIMESCALEDB_ENABLED=true"
Environment="TZ=Europe/Amsterdam"
Environment="LOG_LEVEL=INFO"
WorkingDirectory=/opt/opendtu-logger/
ExecStart=/opt/opendtu-logger/opendtu-logger