github.com/dbernstein1/tyk@v2.9.0-beta9-dl-apic+incompatible/apidef/host_list.go (about)

     1  package apidef
     2  
     3  import (
     4  	"errors"
     5  	"sync"
     6  )
     7  
     8  type HostList struct {
     9  	hMutex sync.RWMutex
    10  	hosts  []string
    11  }
    12  
    13  func NewHostList() *HostList {
    14  	hl := HostList{}
    15  	hl.hosts = make([]string, 0)
    16  	return &hl
    17  }
    18  
    19  func NewHostListFromList(newList []string) *HostList {
    20  	hl := NewHostList()
    21  	hl.Set(newList)
    22  	return hl
    23  }
    24  
    25  func (h *HostList) Set(newList []string) {
    26  	h.hMutex.Lock()
    27  	defer h.hMutex.Unlock()
    28  
    29  	h.hosts = newList
    30  }
    31  
    32  func (h *HostList) All() []string {
    33  	return h.hosts
    34  }
    35  
    36  func (h *HostList) GetIndex(i int) (string, error) {
    37  	if i < 0 {
    38  		return "", errors.New("index must be positive int")
    39  	}
    40  	h.hMutex.RLock()
    41  	defer h.hMutex.RUnlock()
    42  
    43  	if i > len(h.hosts)-1 {
    44  		return "", errors.New("index out of range")
    45  	}
    46  
    47  	return h.hosts[i], nil
    48  }
    49  
    50  func (h *HostList) Len() int {
    51  	h.hMutex.RLock()
    52  	defer h.hMutex.RUnlock()
    53  	return len(h.hosts)
    54  }