feat(layer,queue): display templatized page for queued users

internal/config/config.go

@@ -14,6 +14,7 @@ type Config struct {
 	Proxy  ProxyServerConfig `yaml:"proxy"`
 	Redis  RedisConfig       `yaml:"redis"`
 	Logger LoggerConfig      `yaml:"logger"`
+	Layers LayersConfig      `yaml:"layers"`
 }
 
 // NewFromFile retrieves the configuration from the given file
@@ -46,6 +47,7 @@ func NewDefault() *Config {
 		Proxy:  NewDefaultProxyServerConfig(),
 		Logger: NewDefaultLoggerConfig(),
 		Redis:  NewDefaultRedisConfig(),
+		Layers: NewDefaultLayersConfig(),
 	}
 }
 

internal/config/environment.go

@@ -4,6 +4,7 @@ import (
 	"os"
 	"regexp"
 	"strconv"
+	"time"
 
 	"github.com/pkg/errors"
 	"gopkg.in/yaml.v3"
@@ -123,3 +124,37 @@ func (iss *InterpolatedStringSlice) UnmarshalYAML(value *yaml.Node) error {
 
 	return nil
 }
+
+type InterpolatedDuration time.Duration
+
+func (id *InterpolatedDuration) UnmarshalYAML(value *yaml.Node) error {
+	var str string
+
+	if err := value.Decode(&str); err != nil {
+		return errors.Wrapf(err, "could not decode value '%v' (line '%d') into string", value.Value, value.Line)
+	}
+
+	if match := reVar.FindStringSubmatch(str); len(match) > 0 {
+		str = os.Getenv(match[1])
+	}
+
+	duration, err := time.ParseDuration(str)
+	if err != nil {
+		return errors.Wrapf(err, "could not parse duration '%v',  line '%d'", str, value.Line)
+	}
+
+	*id = InterpolatedDuration(duration)
+
+	return nil
+}
+
+func (id *InterpolatedDuration) MarshalYAML() (interface{}, error) {
+	duration := time.Duration(*id)
+
+	return duration.String(), nil
+}
+
+func NewInterpolatedDuration(d time.Duration) *InterpolatedDuration {
+	id := InterpolatedDuration(d)
+	return &id
+}

internal/config/layers.go

@@ -0,0 +1,21 @@
+package config
+
+import "time"
+
+type LayersConfig struct {
+	Queue QueueLayerConfig `yaml:"queue"`
+}
+
+func NewDefaultLayersConfig() LayersConfig {
+	return LayersConfig{
+		Queue: QueueLayerConfig{
+			TemplateDir:      "./layers/queue/templates",
+			DefaultKeepAlive: NewInterpolatedDuration(time.Minute),
+		},
+	}
+}
+
+type QueueLayerConfig struct {
+	TemplateDir      InterpolatedString    `yaml:"templateDir"`
+	DefaultKeepAlive *InterpolatedDuration `yaml:"defaultKeepAlive"`
+}