the beginnings of a super basic status page

checker/checker.go

@@ -0,0 +1,24 @@
+package checker
+
+import (
+	"context"
+	"time"
+)
+
+// Checker performs a configured check
+type Checker interface {
+	Check(context.Context) (*Result, error)
+}
+
+// Config is a common configuration for any checker
+type Config struct {
+	Type     string        `json:"type"`
+	Interval time.Duration `json:"interval"`
+}
+
+// Result from a check
+type Result struct {
+	Success bool          `json:"success"`
+	Message string        `json:"message"`
+	RTT     time.Duration `json:"rtt"`
+}

checker/http.go

@@ -0,0 +1,52 @@
+package checker
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"time"
+)
+
+const (
+	// HTTPCheckerType name
+	HTTPCheckerType = "http"
+)
+
+// HTTP checker implementation
+type HTTP struct {
+	URL            string `json:"url"`
+	ExpectedStatus int    `json:"status_code"`
+	Config
+}
+
+// Check the configuration via HTTP
+func (h *HTTP) Check(ctx context.Context) (*Result, error) {
+	request, err := http.NewRequestWithContext(ctx, http.MethodGet, h.URL, nil)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create a request for URL %s: %w", h.URL, err)
+	}
+
+	result := &Result{}
+
+	start := time.Now()
+	response, err := http.DefaultClient.Do(request)
+	result.RTT = time.Since(start)
+
+	if err != nil {
+		result.Message = err.Error()
+
+		return result, nil
+	}
+
+	defer response.Body.Close()
+
+	if response.StatusCode != http.StatusOK {
+		result.Message = fmt.Sprintf("failed to get a status 200, got %d", response.StatusCode)
+
+		return result, nil
+	}
+
+	result.Success = true
+
+	return result, nil
+}

go.mod

@@ -0,0 +1,3 @@
+module git.0xdad.com/tblyler/status
+
+go 1.16