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/******************************************************************************
*
* Copyright 2018 Stefan Majewsky <majewsky@gmx.net>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
package schwift
import (
"fmt"
"regexp"
"github.com/gophercloud/gophercloud"
)
//Account represents a Swift account.
type Account struct {
client *gophercloud.ServiceClient
//URL parts
baseURL string
name string
//cache
headers *AccountHeaders
}
var endpointURLRegexp = regexp.MustCompile(`^(.*/)v1/(.*)/$`)
//AccountFromClient takes a gophercloud.ServiceClient which wraps a Swift
//endpoint, and returns the Account instance corresponding to the account or
//project that this client is connected to.
func AccountFromClient(client *gophercloud.ServiceClient) (*Account, error) {
match := endpointURLRegexp.FindStringSubmatch(client.Endpoint)
if match == nil {
return nil, fmt.Errorf(`schwift.AccountFromClient(): invalid Swift endpoint URL: cannot find "/v1/" in %q`, client.Endpoint)
}
return &Account{
client: client,
baseURL: match[1],
name: match[2],
}, nil
}
//SwitchAccount returns a handle on a different account on the same server. Note
//that you need reseller permissions to access accounts other than that where
//you originally authenticated. This method does not check whether the account
//actually exists.
//
//The account name is usually the project name with an additional "AUTH_"
//prefix.
func (a *Account) SwitchAccount(accountName string) *Account {
clonedClient := *a.client
clonedClient.Endpoint = a.baseURL + "v1/" + accountName + "/"
return &Account{
client: &clonedClient,
baseURL: a.baseURL,
name: accountName,
}
}
//Name returns the name of the account (usually the prefix "AUTH_" followed by
//the project ID).
func (a *Account) Name() string {
return a.name
}
//Client returns the gophercloud.ServiceClient which is used to make requests
//against this account.
func (a *Account) Client() *gophercloud.ServiceClient {
return a.client
}
//Headers returns the AccountHeaders for this account. If the AccountHeaders
//has not been cached yet, a HEAD request is issued on the account.
//
//This operation fails with http.StatusNotFound if the account does not exist.
func (a *Account) Headers() (AccountHeaders, error) {
if a.headers != nil {
return *a.headers, nil
}
resp, err := Request{
Method: "HEAD",
ExpectStatusCodes: []int{204},
}.Do(a.client)
if err != nil {
return AccountHeaders{}, err
}
headers := AccountHeaders(headersFromHTTP(resp.Header))
err = headers.Validate()
if err != nil {
return headers, err
}
a.headers = &headers
return *a.headers, nil
}
//Invalidate clears the internal cache of this Account instance. The next call
//to Headers() on this instance will issue a HEAD request on the account.
func (a *Account) Invalidate() {
a.headers = nil
}
//Update updates the account using a POST request. To add URL parameters, pass
//a non-nil *RequestOptions.
//
//A successful POST request implies Invalidate() since it may change metadata.
func (a *Account) Update(headers AccountHeaders, opts *RequestOptions) error {
_, err := Request{
Method: "POST",
Headers: headersToHTTP(headers),
Options: opts,
ExpectStatusCodes: []int{204},
}.Do(a.client)
if err == nil {
a.Invalidate()
}
return err
}
//Create creates the account using a PUT request. To add URL parameters, pass
//a non-nil *RequestOptions.
//
//Note that this operation is only available to reseller admins, not to regular
//users.
//
//A successful PUT request implies Invalidate() since it may change metadata.
func (a *Account) Create(headers AccountHeaders, opts *RequestOptions) error {
_, err := Request{
Method: "PUT",
Headers: headersToHTTP(headers),
Options: opts,
ExpectStatusCodes: []int{201, 202},
}.Do(a.client)
if err == nil {
a.Invalidate()
}
return err
}
//Containers returns a ContainerIterator that lists the containers in this
//account. The most common use case is:
//
// containers, err := account.Containers().Collect()
//
//You can extend this by configuring the iterator before collecting the results:
//
// iter := account.Containers()
// iter.Prefix = "test-"
// containers, err := iter.Collect()
//
//Or you can use a different iteration method:
//
// err := account.Containers().ForeachDetailed(func (ci ContainerInfo) error {
// log.Printf("container %s contains %d objects!\n",
// ci.Container.Name(), ci.ObjectCount)
// })
//
func (a *Account) Containers() *ContainerIterator {
return &ContainerIterator{Account: a}
}
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