feature/add-actions (#9)

Co-authored-by: kjuulh <contact@kjuulh.io>
Reviewed-on: kjuulh/kraken#9

internal/actions/builders/go.go

@@ -0,0 +1,46 @@
+package builders
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"os/exec"
+
+	"go.uber.org/zap"
+)
+
+type Go struct {
+	logger *zap.Logger
+}
+
+func NewGo(logger *zap.Logger) *Go {
+	return &Go{logger: logger}
+}
+
+type GoExecutable func(ctx context.Context, victimPath string) error
+
+func (g *Go) Build(ctx context.Context, modulePath, entryPath string) (GoExecutable, error) {
+	g.logger.Debug("Building go binary", zap.String("actiondir", modulePath), zap.String("entry", entryPath))
+
+	if _, err := os.Stat(fmt.Sprintf("%s/%s", modulePath, entryPath)); os.IsNotExist(err) {
+		return nil, errors.New("could not find entry")
+	}
+
+	err := exec.CommandContext(
+		ctx,
+		"/bin/bash",
+		"-c",
+		fmt.Sprintf("(cd %s; go build -o main %s)", modulePath, entryPath),
+	).Run()
+	if err != nil {
+		return nil, err
+	}
+
+	g.logger.Debug("Go binary built!")
+
+	return func(ctx context.Context, victimPath string) error {
+		g.logger.Debug("Executing script", zap.String("victim", victimPath))
+		return exec.CommandContext(ctx, "/bin/bash", "-c", fmt.Sprintf("(cd %s; %s/main)", victimPath, modulePath)).Run()
+	}, nil
+}