Example #1
0
func newContextNode(v interface{}) (res contextNode) {
	switch t := v.(type) {
	case string:
		return &contextKey{key: t}
	case template.Context:
		return newContextMap(t)
	case map[string]interface{}:
		return newContextMap(template.Context(t))
	}
	return &contextValue{value: v}
}
Example #2
0
func constructOptions(md *Middleware) (opts *middlewareOpts, err error) {
	opts = &middlewareOpts{
		options: md.Options,
		context: make(map[string]contextNode),
	}
	opts.template, err = template.ParseMap(template.Context(md.Template))
	if err != nil {
		return
	}
	for key, value := range md.Context {
		opts.context[key] = newContextNode(value)
	}
	return
}
Example #3
0
// CleanDeep - Cleans map deeply. Converting all map[interface{}]interface{} to map[string]interface{}.
// OK is false when obtained invalid type in map key.
func CleanDeep(v interface{}) (_ interface{}, err error) {
	var ok bool
	switch m := v.(type) {
	case template.Context:
		for k, v := range m {
			m[k], err = CleanDeep(v)
			if err != nil {
				err = fmt.Errorf("key %q: %v", k, err)
				return
			}
		}
		return m, nil
	case map[string]interface{}:
		return CleanDeep(template.Context(m))
	case map[interface{}]interface{}:
		res := make(template.Context)
		for k, v := range m {
			var key string
			key, ok = k.(string)
			if !ok {
				err = fmt.Errorf("key %#v is of invalid type %T", k, k)
				return
			}
			res[key], err = CleanDeep(v)
			if err != nil {
				err = fmt.Errorf("key %q: %v", key, err)
				return
			}
		}
		return res, nil
	case []interface{}:
		for n, v := range m {
			m[n], err = CleanDeep(v)
			if err != nil {
				err = fmt.Errorf("slice key %d: %v", n, err)
				return
			}
		}
		return m, nil
	}
	return v, nil
}
Example #4
0
// mergeDefaults - Merges two maps. Both can be one of:
// `map[string]interface{}` or `map[interface{}]interface{}`
func mergeDefaults(dest, extra interface{}) interface{} {
	switch d := dest.(type) {
	case map[string]string:
		switch e := extra.(type) {
		case map[string]string:
			for k, v := range e {
				if _, ok := d[k]; !ok {
					d[k] = v
				}
			}
			return d
		case template.Context:
			for k, v := range e {
				if _, ok := d[k]; !ok {
					d[k] = v.(string)
				}
			}
			return d
		case map[string]interface{}:
			for k, v := range e {
				if _, ok := d[k]; !ok {
					d[k] = v.(string)
				}
			}
			return d
		default:
			return dest
		}
	case map[string]interface{}:
		return mergeDefaults(template.Context(d), extra)
	case template.Context:
		switch e := extra.(type) {
		case map[string]string:
			for k, v := range e {
				if _, ok := d[k]; !ok {
					d[k] = v
				}
			}
			return d
		case map[string]interface{}:
			var res template.Context
			if d == nil {
				res = make(template.Context)
			} else {
				res = template.Context(d)
			}
			for k, v := range e {
				d[k] = WithDefaults(d[k], v)
			}
			return res
		case template.Context:
			if d == nil {
				d = make(template.Context)
			}
			for k, v := range e {
				d[k] = WithDefaults(d[k], v)
			}
			return d
		default:
			return dest
		}
	case []interface{}:
		switch e := extra.(type) {
		case []string:
			for _, value := range e {
				d = append(d, value)
			}
			return d
		case []interface{}:
			return append(d, e...)
		default:
			return d
		}
	case []string:
		switch e := extra.(type) {
		case []interface{}:
			for _, value := range e {
				if v, ok := value.(string); ok {
					d = append(d, v)
				}
			}
			return d
		case []string:
			return append(d, e...)
		default:
			return d
		}
	default:
		return dest
	}
}