Merge pull request #3 from ConSol-Monitoring:cli-library-split

Cli-library-split

Author: inqrphl

.golangci.yml

@@ -0,0 +1,25 @@
+version: "2"
+linters:
+  default: standard
+  settings:
+    gocritic:
+      enabled-tags:
+        - performance
+        - style
+        - experimental
+        - security
+        - opinionated
+        - diagnostic
+    lll:
+      line-length: 200
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+formatters:
+  enable:
+    - gofmt
+    - goimports

go.mod

@@ -1,24 +1,20 @@
 module github.com/consol-monitoring/check_prometheus
 
-go 1.19
-
-replace internal/helper => ./internal/helper
-
-replace internal/mode => ./internal/mode
+go 1.25
 
 require (
-	github.com/consol-monitoring/check_x v0.0.0-20230423195421-be7cfdc8c478
-	github.com/urfave/cli v1.22.14
-	internal/helper v0.0.0-00010101000000-000000000000
-	internal/mode v0.0.0-00010101000000-000000000000
+	github.com/consol-monitoring/check_x v0.0.0-20260108170459-f7c19720a9ad
+	github.com/prometheus/client_golang v1.23.2
+	github.com/prometheus/common v0.67.4
+	github.com/urfave/cli/v3 v3.6.1
 )
 
 require (
-	github.com/cpuguy83/go-md2man/v2 v2.0.3 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/kr/text v0.2.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/prometheus/client_golang v1.18.0 // indirect
-	github.com/prometheus/common v0.45.0 // indirect
-	github.com/russross/blackfriday/v2 v2.1.0 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
+	go.yaml.in/yaml/v2 v2.4.3 // indirect
+	google.golang.org/protobuf v1.36.10 // indirect
 )

go.sum

@@ -1,55 +1,69 @@
-github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
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-github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
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internal/helper/go.mod

@@ -1,56 +1,139 @@
 package helper
 
 import (
+	"crypto/tls"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
+	"net/http/cookiejar"
+	"net/url"
+	"strings"
 	"time"
 
-	"github.com/consol-monitoring/check_x"
 	"github.com/prometheus/client_golang/api"
 	v1 "github.com/prometheus/client_golang/api/prometheus/v1"
 	"github.com/prometheus/common/model"
 )
 
+// TimestampFreshness is the amount of second a result is treated as valid
+var TimestampFreshness int
+
+// InsecureSkipVerify will skip TLS certificate verification when set to true. It will be used when constructing http Transport
+var InsecureSkipVerify bool
+
+// Cookies parsed into []*http.Cookie
+var Cookies []*http.Cookie
+
+// Verbose flag writes to here
+var Verbose bool
+
+type prometheusInterceptor struct {
+	next http.RoundTripper
+}
+
+// Interceptor function used in verbose mode
+func (i *prometheusInterceptor) RoundTrip(req *http.Request) (*http.Response, error) {
+	if Verbose {
+		fmt.Printf("Sending %s request to %s\n", req.Method, req.URL.String())
+		fmt.Printf("Request:\n%+v\n", req)
+		fmt.Printf("Url:\n%+v\n", req.URL)
+		fmt.Printf("Header:\n%+v\n", req.Header)
+
+		// Read and print the body content
+		if req.Body != nil {
+			bodyBytes, err := io.ReadAll(req.Body)
+			if err != nil {
+				fmt.Printf("Error reading body: %v\n", err)
+			} else {
+				fmt.Printf("Body:\n%s\n", string(bodyBytes))
+				// Restore the body for further processing
+				req.Body = io.NopCloser(strings.NewReader(string(bodyBytes)))
+			}
+		} else {
+			fmt.Printf("Body is empty\n")
+		}
+	}
+
+	// 2. Ensure the Content-Type is set
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+
+	return i.next.RoundTrip(req)
+}
+
 // NewAPIClientV1 will create an prometheus api client v1
-func NewAPIClientV1(address string) (v1.API, error) {
-	client, err := api.NewClient(api.Config{
-		Address: address,
+func NewAPIClientV1(address *url.URL) (v1.API, error) {
+	baseTransport := http.DefaultTransport.(*http.Transport).Clone()
+	baseTransport.TLSClientConfig = &tls.Config{InsecureSkipVerify: InsecureSkipVerify}
+
+	interceptedTransport := &prometheusInterceptor{
+		next: baseTransport,
+	}
+
+	httpClient := &http.Client{
+		Transport: interceptedTransport,
+	}
+
+	// Initialize cookie jar only when Cookies are provided
+	if len(Cookies) > 0 {
+		jar, _ := cookiejar.New(nil)
+		httpClient.Jar = jar
+		httpClient.Jar.SetCookies(address, Cookies)
+	}
+
+	prometheusClient, err := api.NewClient(api.Config{
+		Address: address.String(),
+		Client:  httpClient,
 	})
+
 	if err != nil {
 		return nil, err
 	}
-	return v1.NewAPI(client), nil
+
+	return v1.NewAPI(prometheusClient), nil
 }
 
 // DoAPIRequest does the http handling for an api request
-func DoAPIRequest(address string) ([]byte, error) {
-	resp, err := http.DefaultClient.Get(address)
+func DoAPIRequest(url *url.URL) ([]byte, error) {
+	transport := http.DefaultTransport.(*http.Transport).Clone()
+	transport.TLSClientConfig = &tls.Config{InsecureSkipVerify: InsecureSkipVerify}
+
+	httpClient := &http.Client{
+		Transport: transport,
+	}
+
+	if len(Cookies) > 0 {
+		jar, _ := cookiejar.New(nil)
+		httpClient.Jar = jar
+		httpClient.Jar.SetCookies(url, Cookies)
+	}
+
+	resp, err := httpClient.Get(url.String())
 	if err != nil {
 		return nil, err
 	}
-	body, err := ioutil.ReadAll(resp.Body)
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}
+
 	return body, nil
 }
 
-// TimestampFreshness is the amount of second a result is treated as valid
-var TimestampFreshness int
-
 // CheckTimestampFreshness tests if the data is still valid
-func CheckTimestampFreshness(timestamp model.Time) {
-	CheckTimeFreshness(time.Unix(int64(timestamp), 0))
+func CheckTimestampFreshness(timestamp model.Time) error {
+	return CheckTimeFreshness(time.Unix(int64(timestamp), 0))
 }
 
 // CheckTimeFreshness tests if the data is still valid
-func CheckTimeFreshness(timestamp time.Time) {
+func CheckTimeFreshness(timestamp time.Time) error {
 	if TimestampFreshness == 0 {
-		return
+		return fmt.Errorf("error when checking time freshness, timestampFreshness is zero")
 	}
-	timeDiff := time.Now().Sub(timestamp)
+	timeDiff := time.Since(timestamp)
 	if int(timeDiff.Seconds()) > TimestampFreshness {
-		check_x.Exit(check_x.Unknown, fmt.Sprintf("One of the scraped data exceed the freshness by %ds", int(timeDiff.Seconds())-TimestampFreshness))
+		return fmt.Errorf("one of the scraped data exceed the freshness by %ds", int(timeDiff.Seconds())-TimestampFreshness)
 	}
+	return nil
 }