🔨 Move cli folder contents into project root (#1253)

* Remove `logger` module

* Remove `shared` module

* Move `cli` folder contents into project root

* Fix linter

* Change the module name from `github.com/kubeshark/kubeshark/cli` to `github.com/kubeshark/kubeshark`

* Set the default `Makefile` rule to `build`

* Add `lint` rule

* Fix the linter errors

utils/consts.go

@@ -0,0 +1,10 @@
+package utils
+
+const (
+	KubesharkFilteringOptionsEnvVar = "SENSITIVE_DATA_FILTERING_OPTIONS"
+	KubesharkAgentImageRepo         = "docker.io/kubeshark/hub"
+	LogLevelEnvVar                  = "LOG_LEVEL"
+	BaseninePort                    = "9099"
+	HostModeEnvVar                  = "HOST_MODE"
+	NodeNameEnvVar                  = "NODE_NAME"
+)

utils/httpUtils.go

@@ -0,0 +1,46 @@
+package utils
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+)
+
+// Get - When err is nil, resp always contains a non-nil resp.Body.
+// Caller should close resp.Body when done reading from it.
+func Get(url string, client *http.Client) (*http.Response, error) {
+	return checkError(client.Get(url))
+}
+
+// Post - When err is nil, resp always contains a non-nil resp.Body.
+// Caller should close resp.Body when done reading from it.
+func Post(url, contentType string, body io.Reader, client *http.Client) (*http.Response, error) {
+	return checkError(client.Post(url, contentType, body))
+}
+
+// Do - When err is nil, resp always contains a non-nil resp.Body.
+// Caller should close resp.Body when done reading from it.
+func Do(req *http.Request, client *http.Client) (*http.Response, error) {
+	return checkError(client.Do(req))
+}
+
+func checkError(response *http.Response, errInOperation error) (*http.Response, error) {
+	if errInOperation != nil {
+		return response, errInOperation
+		// Check only if status != 200 (and not status >= 300). Agent APIs return only 200 on success.
+	} else if response.StatusCode != http.StatusOK {
+		body, err := io.ReadAll(response.Body)
+		response.Body.Close()
+		response.Body = io.NopCloser(bytes.NewBuffer(body)) // rewind
+		if err != nil {
+			return response, err
+		}
+
+		errorMsg := strings.ReplaceAll(string(body), "\n", ";")
+		return response, fmt.Errorf("got response with status code: %d, body: %s", response.StatusCode, errorMsg)
+	}
+
+	return response, nil
+}

utils/sliceUtils.go

@@ -0,0 +1,39 @@
+package utils
+
+func Contains(slice []string, containsValue string) bool {
+	for _, sliceValue := range slice {
+		if sliceValue == containsValue {
+			return true
+		}
+	}
+
+	return false
+}
+
+func Unique(slice []string) []string {
+	keys := make(map[string]bool)
+	var list []string
+
+	for _, entry := range slice {
+		if _, value := keys[entry]; !value {
+			keys[entry] = true
+			list = append(list, entry)
+		}
+	}
+
+	return list
+}
+
+func EqualStringSlices(slice1 []string, slice2 []string) bool {
+	if len(slice1) != len(slice2) {
+		return false
+	}
+
+	for _, v := range slice1 {
+		if !Contains(slice2, v) {
+			return false
+		}
+	}
+
+	return true
+}

utils/waitUtils.go

@@ -0,0 +1,25 @@
+package utils
+
+import (
+	"context"
+	"log"
+	"os"
+	"os/signal"
+	"syscall"
+)
+
+func WaitForFinish(ctx context.Context, cancel context.CancelFunc) {
+	log.Printf("waiting for finish...")
+	sigChan := make(chan os.Signal, 1)
+	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT)
+
+	// block until ctx cancel is called or termination signal is received
+	select {
+	case <-ctx.Done():
+		log.Printf("ctx done")
+		break
+	case <-sigChan:
+		log.Printf("Got termination signal, canceling execution...")
+		cancel()
+	}
+}