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package common
import (
"fmt"
"log"
"time"
"github.com/denverdino/aliyungo/util"
)
// Constants for Aliyun API requests
const (
SignatureVersion = "1.0"
SignatureMethod = "HMAC-SHA1"
JSONResponseFormat = "JSON"
XMLResponseFormat = "XML"
ECSRequestMethod = "GET"
)
type Request struct {
Format string
Version string
RegionId Region
AccessKeyId string
SecurityToken string
Signature string
SignatureMethod string
Timestamp util.ISO6801Time
SignatureVersion string
SignatureNonce string
ResourceOwnerAccount string
Action string
}
func (request *Request) init(version string, action string, AccessKeyId string, securityToken string, regionId Region) {
request.Format = JSONResponseFormat
request.Timestamp = util.NewISO6801Time(time.Now().UTC())
request.Version = version
request.SignatureVersion = SignatureVersion
request.SignatureMethod = SignatureMethod
request.SignatureNonce = util.CreateRandomString()
request.Action = action
request.AccessKeyId = AccessKeyId
request.SecurityToken = securityToken
request.RegionId = regionId
}
type Response struct {
RequestId string
}
type ErrorResponse struct {
Response
HostId string
Code string
Message string
}
// An Error represents a custom error for Aliyun API failure response
type Error struct {
ErrorResponse
StatusCode int //Status Code of HTTP Response
}
func (e *Error) Error() string {
return fmt.Sprintf("Aliyun API Error: RequestId: %s Status Code: %d Code: %s Message: %s", e.RequestId, e.StatusCode, e.Code, e.Message)
}
type Pagination struct {
PageNumber int
PageSize int
}
func (p *Pagination) SetPageSize(size int) {
p.PageSize = size
}
func (p *Pagination) Validate() {
if p.PageNumber < 0 {
log.Printf("Invalid PageNumber: %d", p.PageNumber)
p.PageNumber = 1
}
if p.PageSize < 0 {
log.Printf("Invalid PageSize: %d", p.PageSize)
p.PageSize = 10
} else if p.PageSize > 50 {
log.Printf("Invalid PageSize: %d", p.PageSize)
p.PageSize = 50
}
}
// A PaginationResponse represents a response with pagination information
type PaginationResult struct {
TotalCount int
PageNumber int
PageSize int
}
// NextPage gets the next page of the result set
func (r *PaginationResult) NextPage() *Pagination {
if r.PageNumber*r.PageSize >= r.TotalCount {
return nil
}
return &Pagination{PageNumber: r.PageNumber + 1, PageSize: r.PageSize}
}
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