Use generics, instead of big.Float and big.ParseFloat

.github/dependabot.yml

@@ -0,0 +1,15 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "github-actions" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/go.yml

@@ -0,0 +1,27 @@
+# This workflow will build a golang project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go
+
+name: Go
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version-file: 'go.mod'
+
+    - name: Build
+      run: make build
+
+    - name: Test
+      run: make test

.github/workflows/golangci-lint.yml

@@ -0,0 +1,69 @@
+name: golangci-lint
+on:
+  push:
+    branches:
+      - master
+      - main
+  pull_request:
+
+permissions:
+  contents: read
+  # Optional: allow read access to pull request. Use with `only-new-issues`
+  # option.
+  # pull-requests: read
+
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version-file: 'go.mod'
+          cache: false
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v4
+        with:
+          # Require: The version of golangci-lint to use.
+          #
+          # When `install-mode` is `binary` (default) the value can be v1.2 or
+          # v1.2.3 or `latest` to use the latest version.
+          #
+          # When `install-mode` is `goinstall` the value can be v1.2.3,
+          # `latest`, or the hash of a commit.
+          version: 'latest'
+
+          # Optional: working directory, useful for monorepos
+          # working-directory: somedir
+
+          # Optional: golangci-lint command line arguments.
+          #
+          # Note: By default, the `.golangci.yml` file should be at the root of
+          # the repository.
+          #
+          # The location of the configuration file can be changed by using
+          # `--config=`.
+          #
+          # args: --timeout=30m --config=/my/path/.golangci.yml --issues-exit-code=0
+
+          # Optional: show only new issues if it's a pull request. The default
+          # value is `false`.
+          # only-new-issues: true
+
+          # Optional: if set to true, then all caching functionality will be
+          # completely disabled, takes precedence over all other caching
+          # options.
+          # skip-cache: true
+
+          # Optional: if set to true, then the action won't cache or restore
+          # ~/go/pkg.
+          # skip-pkg-cache: true
+
+          # Optional: if set to true, then the action won't cache or restore
+          # ~/.cache/go-build.
+          # skip-build-cache: true
+
+          # Optional: The mode to install golangci-lint. It can be 'binary' or
+          # 'goinstall'.
+          # install-mode: "goinstall"

.golangci.yaml

@@ -0,0 +1,49 @@
+run:
+  timeout: 5m
+
+linters:
+  enable:
+    - asciicheck
+    - bidichk
+    - errorlint
+    - gocritic
+    # - gofmt # we are using gofumpt instead
+    - gofumpt
+    - goimports
+    - makezero
+    - misspell
+    - nolintlint
+    - perfsprint
+    - prealloc
+    - testifylint
+    - unconvert
+    - usestdlibvars
+    - wastedassign
+    - wrapcheck
+
+linters-settings:
+  goimports:
+    # A comma-separated list of prefixes, which, if set, checks import paths
+    # with the given prefixes are grouped after 3rd-party packages.
+    # Default: ""
+    local-prefixes: "github.com/inexio/go-monitoringplugin"
+
+  nolintlint:
+    # Enable to require an explanation of nonzero length after each nolint directive.
+    # Default: false
+    require-explanation: true
+    # Enable to require nolint directives to mention the specific linter being suppressed.
+    # Default: false
+    require-specific: true
+
+  revive:
+    rules:
+      # https://github.com/mgechev/revive/blob/master/RULES_DESCRIPTIONS.md#receiver-naming
+      - name: receiver-naming
+        disabled: true
+
+issues:
+  exclude-rules:
+    - path: _test\.go
+      linters:
+        - wrapcheck

Makefile

@@ -0,0 +1,10 @@
+TEST_ARGS=
+
+test:
+	go test ${TEST_ARGS} ./...
+
+build:
+	go build -ldflags="-s -w" ./
+
+clean:
+	rm -f check_wg

README.md

@@ -1,47 +1,71 @@
 # go-monitoringplugin
 
-
 [![Go Report Card](https://goreportcard.com/badge/github.com/inexio/go-monitoringplugin)](https://goreportcard.com/report/github.com/inexio/go-monitoringplugin)
 [![GitHub license](https://img.shields.io/badge/license-BSD-blue.svg)](https://github.com/inexio/go-monitoringplugin/blob/master/LICENSE)
 [![GoDoc doc](https://img.shields.io/badge/godoc-reference-blue)](https://godoc.org/github.com/inexio/go-monitoringplugin)
+
 ## Description
-Golang package for writing monitoring check plugins for [nagios](https://www.nagios.org/), [icinga2](https://icinga.com/), [zabbix](https://www.zabbix.com/), [checkmk](https://checkmk.com/), etc.
+
+Golang package for writing monitoring check plugins for
+[nagios](https://www.nagios.org/), [icinga2](https://icinga.com/),
+[zabbix](https://www.zabbix.com/), [checkmk](https://checkmk.com/), etc.
+
 The package complies with the [Monitoring Plugins Development Guidelines](https://www.monitoring-plugins.org/doc/guidelines.html).
 
 ## Example / Usage
-	package main
-
-	import (
-		monitoringplugin "github.com/inexio/go-monitoringplugin"
-	)
-
-	func main() {
-		//Creating response with a default ok message that will be displayed when the checks exits with status ok
-		response := monitoringplugin.NewResponse("everything checked!")
-
-		//Set output delimiter (default is \n)
-		//response.SetOutputDelimiter(" / ")
-
-		//updating check plugin status and adding message to the ouput (status only changes if the new status is worse than the current one)
-		response.UpdateStatus(monitoringplugin.OK, "something is ok!") //check status stays ok
-		response.UpdateStatus(monitoringplugin.CRITICAL, "something else is critical!") //check status updates to critical
-		response.UpdateStatus(monitoringplugin.WARNING, "something else is warning!") //check status stays critical, but message will be added to the output
-
-
-		//adding performance data
-		err := response.AddPerformanceDataPoint(monitoringplugin.NewPerformanceDataPoint("response_time", 10, "s").SetWarn(10).SetCrit(20).SetMin(0))
-		if err != nil {
-			//error handling
-		}
-		err = response.AddPerformanceDataPoint(monitoringplugin.NewPerformanceDataPoint("memory_usage", 50, "%").SetWarn(80).SetCrit(90).SetMin(0).SetMax(100))
-		if err != nil {
-			//error handling
-		}
-
-		response.OutputAndExit()
-		/* exits program with exit code 2 and outputs:
-		CRITICAL: something is ok!
-		something else is critical!
-		something else is warning! | 'response_time'=10s;10;20;0; 'memory_usage'=50%;80;90;0;100
-		*/
+
+``` go
+package main
+
+import "github.com/inexio/go-monitoringplugin/v2"
+
+func main() {
+	// Creating response with a default ok message, that will be displayed when
+	// the checks exits with status ok.
+	response := monitoringplugin.NewResponse("everything checked!")
+
+	// Set output delimiter (default is \n)
+	// response.SetOutputDelimiter(" / ")
+
+	// Updating check plugin status and adding message to the output (status only
+	// changes if the new status is worse than the current one).
+
+	// check status stays ok
+	response.UpdateStatus(monitoringplugin.OK, "something is ok!")
+	// check status updates to critical
+	response.UpdateStatus(monitoringplugin.CRITICAL,
+		"something else is critical!")
+	// check status stays critical, but message will be added to the output
+	response.UpdateStatus(monitoringplugin.WARNING, "something else is warning!")
+
+	// adding performance data
+	p1 := monitoringplugin.NewPerformanceDataPoint("response_time", 10).
+		SetUnit("s").SetMin(0)
+	p1.NewThresholds(0, 10, 0, 20)
+	if err := response.AddPerformanceDataPoint(p1); err != nil {
+		// error handling
+	}
+
+	p2 := monitoringplugin.NewPerformanceDataPoint("memory_usage", 50.6).
+		SetUnit("%").SetMin(0).SetMax(100)
+	p2.NewThresholds(0, 80, 0, 90)
+	if err := response.AddPerformanceDataPoint(p2); err != nil {
+		// error handling
+	}
+
+	err = response.AddPerformanceDataPoint(
+		monitoringplugin.NewPerformanceDataPoint("memory_usage", 50.6).
+			SetUnit("%").SetMin(0).SetMax(100).
+			SetThresholds(monitoringplugin.NewThresholds(0, 80.0, 0, 90.0)))
+	if err != nil {
+		// error handling
 	}
+
+	response.OutputAndExit()
+	/* exits program with exit code 2 and outputs:
+	CRITICAL: something is ok!
+	something else is critical!
+	something else is warning! | 'response_time'=10s;10;20;0; 'memory_usage'=50%;80;90;0;100
+	*/
+}
+```