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|
package storage
import (
"bytes"
"encoding/json"
"fmt"
"net/http"
"net/url"
)
// TableServiceClient contains operations for Microsoft Azure Table Storage
// Service.
type TableServiceClient struct {
client Client
}
// AzureTable is the typedef of the Azure Table name
type AzureTable string
const (
tablesURIPath = "/Tables"
)
type createTableRequest struct {
TableName string `json:"TableName"`
}
func pathForTable(table AzureTable) string { return fmt.Sprintf("%s", table) }
func (c *TableServiceClient) getStandardHeaders() map[string]string {
return map[string]string{
"x-ms-version": "2015-02-21",
"x-ms-date": currentTimeRfc1123Formatted(),
"Accept": "application/json;odata=nometadata",
"Accept-Charset": "UTF-8",
"Content-Type": "application/json",
}
}
// QueryTables returns the tables created in the
// *TableServiceClient storage account.
func (c *TableServiceClient) QueryTables() ([]AzureTable, error) {
uri := c.client.getEndpoint(tableServiceName, tablesURIPath, url.Values{})
headers := c.getStandardHeaders()
headers["Content-Length"] = "0"
resp, err := c.client.execTable("GET", uri, headers, nil)
if err != nil {
return nil, err
}
defer resp.body.Close()
if err := checkRespCode(resp.statusCode, []int{http.StatusOK}); err != nil {
return nil, err
}
buf := new(bytes.Buffer)
buf.ReadFrom(resp.body)
var respArray queryTablesResponse
if err := json.Unmarshal(buf.Bytes(), &respArray); err != nil {
return nil, err
}
s := make([]AzureTable, len(respArray.TableName))
for i, elem := range respArray.TableName {
s[i] = AzureTable(elem.TableName)
}
return s, nil
}
// CreateTable creates the table given the specific
// name. This function fails if the name is not compliant
// with the specification or the tables already exists.
func (c *TableServiceClient) CreateTable(table AzureTable) error {
uri := c.client.getEndpoint(tableServiceName, tablesURIPath, url.Values{})
headers := c.getStandardHeaders()
req := createTableRequest{TableName: string(table)}
buf := new(bytes.Buffer)
if err := json.NewEncoder(buf).Encode(req); err != nil {
return err
}
headers["Content-Length"] = fmt.Sprintf("%d", buf.Len())
resp, err := c.client.execTable("POST", uri, headers, buf)
if err != nil {
return err
}
defer resp.body.Close()
if err := checkRespCode(resp.statusCode, []int{http.StatusCreated}); err != nil {
return err
}
return nil
}
// DeleteTable deletes the table given the specific
// name. This function fails if the table is not present.
// Be advised: DeleteTable deletes all the entries
// that may be present.
func (c *TableServiceClient) DeleteTable(table AzureTable) error {
uri := c.client.getEndpoint(tableServiceName, tablesURIPath, url.Values{})
uri += fmt.Sprintf("('%s')", string(table))
headers := c.getStandardHeaders()
headers["Content-Length"] = "0"
resp, err := c.client.execTable("DELETE", uri, headers, nil)
if err != nil {
return err
}
defer resp.body.Close()
if err := checkRespCode(resp.statusCode, []int{http.StatusNoContent}); err != nil {
return err
}
return nil
}
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