Preparations for Release

.github/workflows/build.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: 1.20
+          go-version: 1.21
 
       - name: Test
         run: go test -v ./...

.github/workflows/golangci-lint.yml

@@ -16,3 +16,5 @@ jobs:
 
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
+        with:
+          version: v1.54

.golangci.yml

@@ -16,6 +16,7 @@ linters:
      - forbidigo
      - gci
      - lll
+     - godot
      - gofumpt
      - gochecknoinits
      - gochecknoglobals

cmd/config.go

@@ -15,6 +15,7 @@ import (
 	"github.com/NETWAYS/go-check"
 )
 
+// Central Configuration for CLI
 type Config struct {
 	BasicAuth    string
 	Hostname     string
@@ -85,6 +86,7 @@ func (c *Config) NewClient() *client.Client {
 	return client.NewClient(u.String(), c.Token, c.Organization, rt)
 }
 
+// Central timeout configuration for anything that needs it
 func (c *Config) timeoutContext() (context.Context, func()) {
 	return context.WithTimeout(context.Background(), 10*time.Second)
 }

cmd/health.go

@@ -52,6 +52,8 @@ API translation:
 			err    error
 		)
 
+		// Uses the major version to determine which API to call.
+		// Can be extended in the future.
 		switch apiversion.MajorVersion {
 		case 1:
 			health, err = checkV2Health(c.URL, c.Token, c.Client)
@@ -65,6 +67,7 @@ API translation:
 			check.ExitError(err)
 		}
 
+		// Is this flexible enough? Might be better to use strings.Contains.
 		switch health {
 		case "pass":
 			rc = 0

cmd/query.go

@@ -195,6 +195,8 @@ var queryCmd = &cobra.Command{
 			check.ExitError(versionErr)
 		}
 
+		// Uses the major version to determine which API to call.
+		// Can be extended in the future.
 		switch apiversion.MajorVersion {
 		case 2:
 			queryFluxV2(fluxQuery, c.URL, c.Organization, c.Token, c.Client)

contrib/icinga2-commands.conf

@@ -27,21 +27,21 @@ object CheckCommand "influxdb" {
             order = 1
             description = "Timeout for the check"
         }
-        "--tls" = {
+        "--secure" = {
             set_if = "$influxdb_tls$"
             order = 1
-            description = "Use secure connection"
+            description = "Use a HTTPS connection"
         }
         "--insecure" = {
 	        set_if = "$influxdb_insecure$"
             order = 1
-            description = "Allow use of self signed certificates when using SSL"
+            description = "Skip the verification of the TLS certificate"
         }
         "--token" = {
             value = "$influxdb_token$"
             required = true
             order = 1
-            description = "The token which allows access to the API"
+            description = "Token for server authentication"
         }
         "--org" = {
             value = "$influxdb_org$"
@@ -57,59 +57,22 @@ object CheckCommand "influxdb" {
             set_if = {{ macro("$influxdb_query$") == true }}
             description = "The bucket where time series data is stored"
         }
-        "--start" = {
-            value = "$influxdb_start$"
-            order = 4
-            description = "Specifies a start time range for your query"
-        }
-        "--end" = {
-            value = "$influxdb_end$"
-	        order = 4
-            description = "Specifies the end of a time range for your query"
-        }
-        "--measurement" = {
-            value = "$influxdb_measurement$"
-            order = 5
-            description = "The data stored in the associated fields, e.g. 'disk'"
-        }
-        "--field" = {
-            value = "$influxdb_field$"
-            order = 6
-            description = "The key-value pair that records metadata and the actual data value"
-        }
-        "--filter" = {
-            value = "$influxdb_filter$"
-            order = 7
-            repeat_key = true
-            description = "Add a key=value filter to the query, e.g. 'hostname=example.com'"
-        }
-        "--raw-filter" = {
-            value = "$influxdb_raw_filter$"
-	        order = 8
-            repeat_key = true
-            description = "A fully customizable filter which will be added to the query."
-        }
-        "--aggregation" = {
-            value = "$influxdb_aggregation$"
-            order = 9
-            description = "Function that returns an aggregated value across a set of points"
-        }
-        "--raw-query" = {
-            value = "$influxdb_raw_query$"
-            description = "An InfluxQL query which will be performed. Note: Only ONE value result will be evaluated"
-        }
-        "--value-by-key" = {
+        "--flux-query" = {
+            value = "$influxdb_flux_query$"
+            description = "Flux script as string"
+        }
+        "--flux-file" = {
+            value = "$influxdb_flux_string$"
+            description = "Path to flux file"
+        }
+        "--perfdata-label-by-key" = {
             value = "$influxdb_value_by_key$"
             description = "Sets the label for the perfdata of the given column key for the record"
         }
         "--perfdata-label" = {
             value = "$influxdb_perfdata_label$"
             description = "Sets as custom label for the perfdata"
         }
-        "--verbose" = {
-            set_if = "$influxdb_verbose$"
-            description = "Display verbose output"
-        }
         "--critical" = {
             value = "$influxdb_critical$"
             description = "The critical threshold for a value"

contrib/icinga2-service-example.conf

@@ -7,13 +7,7 @@ apply Service "influx_query" {
   vars.influxdb_token = "example_token"
   vars.influxdb_bucket = "example_bucket"
   vars.influxdb_org = "example_org"
-  vars.influxdb_start = "-48h"
-  vars.influxdb_measurement = "example_measurement"
-  vars.influxdb_field = "value"
-  vars.influxdb_filter = [ "metric=example_metric" ]
-  vars.influxdb_raw_filter = [ "group(columns: [\"hostname\"], mode: \"by\")", "aggregateWindow(every: 30m, fn: sum)" ]
-  vars.influxdb_aggregation = "last"
-  vars.influxdb_value_by_key = "hostname"
+  vars.influxdb_flux_query = "flux..."
   vars.influxdb_insecure = true
   vars.influxdb_critical = 100
   vars.influxdb_warning = 50

go.mod

@@ -1,6 +1,6 @@
 module github.com/NETWAYS/check_influxdb
 
-go 1.20
+go 1.21
 
 require (
 	github.com/NETWAYS/go-check v0.5.0

go.sum

@@ -20,6 +20,7 @@ github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiu
 github.com/golangci/lint-1 v0.0.0-20181222135242-d2cdd8c08219/go.mod h1:/X8TswGSh1pIozq4ZwCfxS0WA5JGXguxk94ar/4c87Y=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
+github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=

internal/api/api.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 )
 
+// APIVersion is mainly for identifying the API Version of InfluxDB
 type APIVersion struct {
 	Version      string `json:"version"`
 	MajorVersion int

internal/client/client.go

@@ -11,6 +11,8 @@ import (
 	"github.com/NETWAYS/check_influxdb/internal/api"
 )
 
+// Client is a small wrapper for HTTP connections,
+// that is configured and used in the subcommands.
 type Client struct {
 	Organization string
 	URL          string
@@ -19,7 +21,6 @@ type Client struct {
 }
 
 func NewClient(url, token, org string, rt http.RoundTripper) *Client {
-	// Small wrapper
 	c := &http.Client{
 		Transport: rt,
 	}