#48673 - Added Timestamp Cache Handling to metadata.fields (#648)

* added timestamp convertion to metadata.fields

* fixed duration parsing

* fixed tests

* removed tags file

* added comments

* added better error handling

* changed ParseHumanDuration to use Fscanf

* added builtins handling

* adding mock updates

* fixing tests

* another try

* added timestamp convertion to metadata.fields

* addressing comments from @ericpromislow

* converting error to warning

* added template options

pkg/resources/common/duration_test.go

@@ -0,0 +1,74 @@
+package common
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestParseHumanDuration(t *testing.T) {
+	testCases := []struct {
+		name        string
+		input       string
+		expected    time.Duration
+		expectedErr bool
+	}{
+		{
+			name:     "days + hours + mins + secs",
+			input:    "1d23h45m56s",
+			expected: 24*time.Hour + 23*time.Hour + 45*time.Minute + 56*time.Second,
+		},
+		{
+			name:     "hours + mins + secs",
+			input:    "12h34m56s",
+			expected: 12*time.Hour + 34*time.Minute + 56*time.Second,
+		},
+		{
+			name:     "days + hours",
+			input:    "1d2h",
+			expected: 24*time.Hour + 2*time.Hour,
+		},
+		{
+			name:     "hours + secs",
+			input:    "1d2s",
+			expected: 24*time.Hour + 2*time.Second,
+		},
+		{
+			name:     "mins + secs",
+			input:    "1d2m",
+			expected: 24*time.Hour + 2*time.Minute,
+		},
+		{
+			name:     "hours",
+			input:    "1h",
+			expected: 1 * time.Hour,
+		},
+		{
+			name:     "mins",
+			input:    "1m",
+			expected: 1 * time.Minute,
+		},
+		{
+			name:     "secs",
+			input:    "0s",
+			expected: 0 * time.Second,
+		},
+		{
+			name:        "invalid input",
+			input:       "<invalid>",
+			expectedErr: true,
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			output, err := ParseHumanReadableDuration(tc.input)
+			if tc.expectedErr {
+				assert.Error(t, err)
+			} else {
+				assert.Equal(t, tc.expected, output)
+			}
+		})
+	}
+}