docs: update readme

Signed-off-by: Jose Ramon Mañes <jose@celestia.org>

pkg/k8s/k8s.go

@@ -6,8 +6,9 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"io/ioutil"
+	"net/http"
 	"os"
-	"os/exec"
 	"sync"
 
 	"github.com/jrmanes/torch/config"
@@ -280,47 +281,55 @@ func BulkTrustedPeers(pods config.MutualPeer) {
 // GenesisHash
 func GenesisHash(pods config.MutualPeersConfig) (string, string) {
 	consensusNode := pods.MutualPeers[0].ConsensusNode
-	c := exec.Command("wget", "-q", "-O", "-", fmt.Sprintf("http://%s:26657/block?height=1", consensusNode))
+	url := fmt.Sprintf("http://%s:26657/block?height=1", consensusNode)
 
-	// Create a buffer to capture the command's output
-	var outputBuffer bytes.Buffer
-	c.Stdout = &outputBuffer
+	response, err := http.Get(url)
+	if err != nil {
+		log.Error("Error making GET request:", err)
+		return "", ""
+	}
+	defer response.Body.Close()
+
+	if response.StatusCode != http.StatusOK {
+		log.Error("Non-OK response:", response.Status)
+		return "", ""
+	}
 
-	// Run the command
-	err := c.Run()
+	bodyBytes, err := ioutil.ReadAll(response.Body)
 	if err != nil {
-		log.Error("Error:", err)
+		log.Error("Error reading response body:", err)
 		return "", ""
 	}
 
-	// Convert the output buffer to a string
-	outputString := outputBuffer.String()
+	bodyString := string(bodyBytes)
+	fmt.Println("Response Body:")
+	fmt.Println(bodyString)
 
 	// Parse the JSON response into a generic map
-	var response map[string]interface{}
-	err = json.Unmarshal([]byte(outputString), &response)
+	var jsonResponse map[string]interface{}
+	err = json.Unmarshal([]byte(bodyString), &jsonResponse)
 	if err != nil {
 		log.Error("Error parsing JSON:", err)
 		return "", ""
 	}
 
 	// Access and print the .block_id.hash field
-	blockIDHash, ok := response["result"].(map[string]interface{})["block_id"].(map[string]interface{})["hash"].(string)
+	blockIDHash, ok := jsonResponse["result"].(map[string]interface{})["block_id"].(map[string]interface{})["hash"].(string)
 	if !ok {
 		log.Error("Unable to access .block_id.hash")
 		return "", ""
 	}
 
 	// Access and print the .block.header.time field
-	blockTime, ok := response["result"].(map[string]interface{})["block"].(map[string]interface{})["header"].(map[string]interface{})["time"].(string)
+	blockTime, ok := jsonResponse["result"].(map[string]interface{})["block"].(map[string]interface{})["header"].(map[string]interface{})["time"].(string)
 	if !ok {
 		log.Error("Unable to access .block.header.time")
 		return "", ""
 	}
 
 	log.Info("Block ID Hash: ", blockIDHash)
 	log.Info("Block Time: ", blockTime)
-	log.Info("Full output: ", outputString)
+	log.Info("Full output: ", bodyString)
 
 	return blockIDHash, blockTime
 }