feat: Add format flag to kurtosis port print (#1319)

## Description:
<!-- Describe this change, how it works, and the motivation behind it.
-->
Allows for customization via `--format` flag of the pieces to be shown.
Options are:
1. Protocol
2. Port
3. Ip

## Is this change user facing?
YES
<!-- If yes, please add the "user facing" label to the PR -->
<!-- If yes, don't forget to include docs changes where relevant -->

## References (if applicable):
<!-- Add relevant Github Issues, Discord threads, or other helpful
information. -->
Closes #1316

cli/cli/commands/port/print/print.go

@@ -3,6 +3,7 @@ package print
 import (
 	"context"
 	"fmt"
+	"github.com/kurtosis-tech/kurtosis/api/golang/core/lib/services"
 	"github.com/kurtosis-tech/kurtosis/api/golang/engine/kurtosis_engine_rpc_api_bindings"
 	"github.com/kurtosis-tech/kurtosis/api/golang/engine/lib/kurtosis_context"
 	"github.com/kurtosis-tech/kurtosis/cli/cli/command_framework/highlevel/enclave_id_arg"
@@ -15,6 +16,8 @@ import (
 	"github.com/kurtosis-tech/kurtosis/container-engine-lib/lib/backend_interface"
 	metrics_client "github.com/kurtosis-tech/metrics-library/golang/lib/client"
 	"github.com/kurtosis-tech/stacktrace"
+	"github.com/sirupsen/logrus"
+	"strings"
 )
 
 const (
@@ -33,16 +36,39 @@ const (
 	isPortIdentifierArgOptional = false
 	isPortIdentifierArgGreedy   = false
 
+	formatFlagKey = "format"
+	protocolStr   = "protocol"
+	ipStr         = "ip"
+	numberStr     = "number"
+
 	ipAddress = "127.0.0.1"
 )
 
+var (
+	formatFlagKeyDefault  = fmt.Sprintf("'%s,%s,%s'", protocolStr, ipStr, numberStr)
+	formatFlagKeyExamples = []string{
+		fmt.Sprintf("'%s'", ipStr),
+		fmt.Sprintf("'%s'", numberStr),
+		fmt.Sprintf("'%s,%s'", protocolStr, ipStr),
+	}
+)
+
 var PortPrintCmd = &engine_consuming_kurtosis_command.EngineConsumingKurtosisCommand{
 	CommandStr:                command_str_consts.PortPrintCmdStr,
 	ShortDescription:          "Get information about port",
 	LongDescription:           "Get information for port using port id",
 	KurtosisBackendContextKey: kurtosisBackendCtxKey,
 	EngineClientContextKey:    engineClientCtxKey,
-	Flags:                     []*flags.FlagConfig{},
+	Flags: []*flags.FlagConfig{
+		{
+			Key: formatFlagKey,
+			Usage: fmt.Sprintf(
+				"Allows selecting what pieces of port are printed, using comma separated values (examples: %s). Default %s.",
+				strings.Join(formatFlagKeyExamples, ", "), formatFlagKeyDefault),
+			Type:    flags.FlagType_String,
+			Default: formatFlagKeyDefault,
+		},
+	},
 	Args: []*args.ArgConfig{
 		enclave_id_arg.NewHistoricalEnclaveIdentifiersArgWithValidationDisabled(
 			enclaveIdentifierArgKey,
@@ -89,6 +115,11 @@ func run(
 		return stacktrace.Propagate(err, "An error occurred getting the port identifier using arg key '%v'", portIdentifier)
 	}
 
+	format, err := flags.GetString(formatFlagKey)
+	if err != nil {
+		return stacktrace.Propagate(err, "An error occurred getting the output flag key '%v'", formatFlagKey)
+	}
+
 	kurtosisCtx, err := kurtosis_context.NewKurtosisContextFromLocalEngine()
 	if err != nil {
 		return stacktrace.Propagate(err, "An error occurred connecting to the local Kurtosis engine")
@@ -113,13 +144,34 @@ func run(
 		)
 	}
 
-	fullUrl := fmt.Sprintf("%v:%v", ipAddress, publicPort.GetNumber())
-	maybeApplicationProtocol := publicPort.GetMaybeApplicationProtocol()
-
-	if maybeApplicationProtocol != "" {
-		fullUrl = fmt.Sprintf("%v://%v", maybeApplicationProtocol, fullUrl)
+	fullUrl, err := formatOutput(format, ipAddress, publicPort)
+	if err != nil {
+		return stacktrace.Propagate(err, "Couldn't format the output according to formatting string '%v'", format)
 	}
-
 	out.PrintOutLn(fullUrl)
 	return nil
 }
+
+func formatOutput(format string, ipAddress string, spec *services.PortSpec) (string, error) {
+	parts := strings.Split(format, ",")
+	var resultParts []string
+	for _, part := range parts {
+		switch part {
+		case protocolStr:
+			if spec.GetMaybeApplicationProtocol() != "" {
+				resultParts = append(resultParts, spec.GetMaybeApplicationProtocol()+"://")
+			} else {
+				// TODO(victor.colombo): What should we do here? Panic? Warn?
+				// Left it as a debug for now so it doesn't pollute the output
+				logrus.Debugf("Expected protocol but was empty, skipping")
+			}
+		case ipStr:
+			resultParts = append(resultParts, ipAddress)
+		case numberStr:
+			resultParts = append(resultParts, fmt.Sprintf(":%d", spec.GetNumber()))
+		default:
+			return "", stacktrace.NewError("Invalid format piece '%v'", part)
+		}
+	}
+	return strings.Join(resultParts, ""), nil
+}