Difference between revisions of "Rest API"
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== Recent Changes == | == Recent Changes == | ||
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+ | '''06/20/10 ''' | ||
+ | {| | ||
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+ | New features: | ||
+ | * Added [[Rackspace_Alias(Rest_API)| Rackspace Email Alias]]. | ||
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| [[Rackspace_Mailbox_Spam_(Rest_API)| Rackspace Email Mailbox Spam Settings]] | | [[Rackspace_Mailbox_Spam_(Rest_API)| Rackspace Email Mailbox Spam Settings]] | ||
| /customers/123456789/domains/example.com/rs/mailboxes/john.smith/spam | | /customers/123456789/domains/example.com/rs/mailboxes/john.smith/spam | ||
+ | | All | ||
+ | |- | ||
+ | | [[Rackspace_Alias(Rest_API)| Rackspace Email Alias]] | ||
+ | | /customers/123456789/domains/example.com/rs/mailboxes/john.smith/alias | ||
| All | | All | ||
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This examples is written in [http://www.ruby-lang.org/en/ Ruby]. To make the examples shorter, helper methods have been written. These methods are part of a NetMethods module. The contents of the NetMethods module is listed below. | This examples is written in [http://www.ruby-lang.org/en/ Ruby]. To make the examples shorter, helper methods have been written. These methods are part of a NetMethods module. The contents of the NetMethods module is listed below. | ||
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require 'server.rb' | require 'server.rb' | ||
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require 'test/unit/assertions' | require 'test/unit/assertions' |
Revision as of 19:19, 20 June 2010
Contents
Recent Changes
06/20/10
New features:
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06/11/10
New features: |
05/16/10
New features:
|
Changes:
|
Bug fix:
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03/28/10
New features:
|
Deprecated:
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03/14/10
New features:
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Known Issues:
|
Introduction
The Email & Apps Control Panel API provides most of the functions of the Control Panel through a REST-based web API. Whether it is adding a new customer account, adding mailboxes, or any other of the supported features the API allows your application to administer the changes regardless of your application's language or nature. For more information on RESTful web services refer to the following sites:
Paul James's Homepage: A RESTful Web service, an example
Wikipedia: Representational State Transfer - External Links
The API is accessible to all with access to Control Panel, including resellers, business customers, enterprise customers, and indirect customers. However, not all operations are available to non-resellers. See the Operations section for more details.
Operations
The following pages detail the operations that the API supports. The operations are grouped into sections based on the entity/object types that each operation interacts with. Non-resellers do not have access to all functions.
Resource | Example URI | Business User Access |
---|---|---|
Customer | /customers/123456789 | None |
Domain | /customers/123456789/domains/example.com | Index, Show, Split Domain Routing, Archiving SSO Login URL, Domain Public Folders |
Domain Spam Settings | /customers/123456789/domains/example.com/spam/settings | All |
Rackspace Email Mailbox | /customers/123456789/domains/example.com/rs/mailboxes/john.smith | All |
Rackspace Email Mailbox Spam Settings | /customers/123456789/domains/example.com/rs/mailboxes/john.smith/spam | All |
Rackspace Email Alias | /customers/123456789/domains/example.com/rs/mailboxes/john.smith/alias | All |
Exchange Mailbox | /customers/123456789/domains/example.com/ex/mailboxes/john.smith | All |
Exchange Mailbox Spam Settings | /customers/123456789/domains/example.com/ex/mailboxes/john.smith/spam | All |
Exchange Contact | /customers/123456789/domains/example.com/ex/contacts/john.smith | All |
Exchange Distribution List | /customers/123456789/domains/example.com/ex/distributionlists/group.name | All |
Exchange Resource Mailbox | /customers/123456789/domains/example.com/ex/resources/conference.room | All |
SharePoint | /customers/123456789/sharepoint/settings | Show |
The examples shown in the operation pages are written in Ruby and extensively use the helper functions shown in the Ruby Examples below.
Quick Start
What you need:
- A Rackspace Email and Apps Control Panel admin account
- A HTTP class library that supports TLS and the HTTP methods: GET, POST, PUT, DELETE.
Making your first API call, an Show Customer request:
- Obtain your API keys
- Click on My Account at the top of the Control Panel web interface. Under the Administrators heading there will be an link for the API keys page.
- Set up your client's HTTP request
- Set up your client to make calls to a URL beginning with https://api.emailsrvr.com/v0.
- Populate the Accept, User-Agent and X-Api-Signature HTTP request headers correctly. This is explained in detail here.
- Make a GET request to /customers/me.
- The complete URI will be https://api.emailsrvr.com/v0/customers/me. Use your HTTP library to retrieve the HTTP response code, 'x-error-message' HTTP response header and HTTP response body so that they may be displayed to help debug and determine success.
From here:
- Learn about the operations you'll be implementing at the subpages here.
Accessing the API
Your application will need to make HTTP requests to remote servers. Most programming languages have this function provided in its class library. In addition to the common GET and POST HTTP methods, the library used will also need to support PUT and DELETE.
Calls without TLS (formerly SSL) will complete successfully but it is HIGHLY RECOMMENDED that TLS always be used. Interception of unencrypted communication will allow a third party to have complete access to all functions available via the API.
For some language libraries just using an URL with https:// will cause the library to use TLS. In some other libraries however some options specific to the library may have to be configured to utilize TLS.
All API calls should be directed to a URL in the following format:
https://api.emailsrvr.com/(version)/(resource)
Example:
https://api.emailsrvr.com/v0/customers/12345678/domains/customerbusiness.com
Versions
Supported Versions | URL | Version Documentation |
---|---|---|
v0 (current) | https://api.emailsrvr.com/v0/ | http://signup.apps.rackspace.com/api-wiki/index.php/Rest_API |
The API version number is a component of the URL that is used to access the API. For example, to access the root of the API, the URL is https://api.emailsrvr.com/v0/. Bug fixes and minor non-breaking changes will be made without changing the version number. When major features or breaking changes are introduced, the version number will be incremented. It is not yet determined how many versions are going to be supported at any one time.
Non-breaking Changes | Breaking Changes |
---|---|
Adding new fields or attributes to form fields sent | Changing or deleting any fields in form fields sent |
Adding fields in returned data | Changing or removing fields in returned data |
Changing the URI of any resource |
Authentication
To gain access to the API, your request must include a properly constructed X-Api-Signature HTTP header. Details on what to put in the header are below. To construct the header, you must have the following keys that that are generated from the Control Panel Web interface. The key generation page can be found by clicking 'My Account' at the top, then 'Generate API Keys' in the Administrators section.
Key Name | Description | Example |
---|---|---|
User Key | A public key that corresponds to your admin id | eGbq9/2hcZsRlr1JV1Pi |
Secret Key | A shared secret key | QHOvchm/40czXhJ1OxfxK7jDHr3t |
An unsuccessful authentication will result in a 403 HTTP code.
X-Api-Signature Header
Format is as follows:
<User Key>:<Timestamp>:<SHA1 Hash>
Example: eGbq9/2hcZsRlr1JV1Pi:20010317143725:46VIwd66mOFGG8IkbgnLlXnfnkU=
Remember to include the colons between the data strings!
User Key:
This is the public key issued by the Control Panel browser interface.
Timestamp:
The format is YYYYMMDDHHmmss. All values besides year are zero-padded to two spaces. For example, March 08th 2001 at 2:37.25pm would be 20010308143725.
YYYY | Four-digit year |
MM | Month |
DD | Day |
HH | Hour in 24h format |
mm | Minute |
ss | Second |
SHA1 Hash:
A SHA1 (Secure Hash Algorithm) hash must be applied to a string with the following information:
<User Key><User Agent><Timestamp><Secret Key>
Note that the 'User Agent' must be the exact same as what is specified in the User-Agent HTTP header. Using the above example data, the string before hashing is:
eGbq9/2hcZsRlr1JV1PiRackspace Management Interface20010308143725QHOvchm/40czXhJ1OxfxK7jDHr3t
Resulting base-64 SHA1 Hash:
46VIwd66mOFGG8IkbgnLlXnfnkU=
Be sure to encode the binary hash, not the hex hash, into base-64. The resulting string should be 28 characters long.
Using the API
Requests
HTTP requests should be sent to the server with the correct URL, HTTP method, HTTP headers and form data (if needed). The URL specifies the resource, the HTTP method specifies what operation is done on the resource, and form data is used to specify the details of the resource when the resource is added or edited.
The URLs, corresponding HTTP methods, and necessary form data for the desired operations are detailed in the operation pages.
If you're getting the HTTP status code 417 see Handling HTTP code 417: Expectation failed
URL
The URLs are specifies the resource or resource collection. Objects are organized in a tree collection, starting with customers at the top, then domains, then domain objects next (such as mailboxes, contacts, and distribution lists) and so on. The URLs of the resources and collections accessible are found on the operation pages.
HTTP Method
It is the HTTP method that specifies what operation will be done on the resource. For example, to get the details of a mailbox a HTTP GET will be done on /customers/12345678/domains/example.com/ex/mailboxes/john.smith. If the mailbox does not exist, a HTTP POST to the same URL with the necessary form data will add the mailbox. Then, a HTTP PUT to the same URL will edit mailbox. And to delete the mailbox, an HTTP DELETE would be used.
The types of operations a certain method performs is outlined below.
HTTP Method | Operations | Response |
---|---|---|
GET | Index - returns a list of the resources | XML or JSON formatted data |
Show - returns the details of the resource | ||
POST | Add - adds a new resource | Response code and error message (if applicable) only |
PUT | Edit - changes the details of the resource | |
DELETE | Delete - deletes the resource |
HTTP Headers
All requests to the API must then include HTTP headers with the following information:
Header Name | Description | Example Header Value |
---|---|---|
Accept | The requested content type (required for Index and Show actions). Fill this with either 'text/xml' or 'application/json'. See Response Formats | text/xml |
User-Agent | An identifier you choose for your client software | Rackspace Management Interface |
X-Api-Signature | An authentication string explained in detail here | eGbq9/2hcZsRlr1JV1Pi:20010317143725:HKUn0aajpSDx7qqGK3vqzn3FglI= |
Form Data
When using Add and Edit operations, the details of the resource are sent to the API server via HTTP form data. Your HTTP library should include methods for sending form data along with an HTTP request. The library should by default send the data in the HTTP request body using the 'application/x-www-form-urlencoded' data format.
Index Filter/Search
The results of Index actions can be filtered/searched. The index URLs can take either one of the query strings: "?startswith=xx" or "?contains=xx," where "xx" is the key word. If the request specifies more than one of these two query strings, a 400 HTTP error will be returned. Different fields will be searched depending on the resource type, see below.
Note that "0-9" is a reserved key word for query string "startswith." It represents any result starting with numbers.
Index Actions | Where the key word will be searched |
---|---|
Customer | Customer name, account number, reference number |
Domain | Domain name |
Mailbox | Mailbox name, mailbox display name |
Contact | Contact display name, external email |
Group | Group name, group display name |
Mobile Service | Associated mailbox name, mailbox display name |
Throttling
The server limits the number of requests allowed per user in a certain period of time. The number of requests made are logged per minute. Calls that were made correctly with a user's API key, but not completed for any reason, including those exceeding the throttle limit, are included in this count.
If a user is over the throttling limit then a 403 HTTP code will be returned with an "Exceeded request limits" message.
Operation Category | Request Limit |
---|---|
GET | 60 per minute |
PUT, POST, DELETE | 30 per minute |
POST, PUT, DELETE on a domain | 2 per minute |
POST, DELETE on alternate domains | 2 per minute |
Enabling public folders for a domain | 1 per 5 minutes |
Examples
Index of Exchange Mailboxes:
Hypertext Transfer Protocol GET /v0/customers/12345678/domains/example.com/ex/mailboxes?size=100&offset=100 HTTP/1.1 Host: api.emailsrvr.com User-Agent: Rackspace Management Interface X-Api-Signature: eGbq9/2hcZsRlr1JV1Pi:20010317143725:HKUn0aajpSDx7qqGK3vqzn3FglI= Accept: text/xml
Adding New Exchange Mailbox:
Hypertext Transfer Protocol POST /v0/customers/12345678/domains/example.com/ex/mailboxes/john.smith HTTP/1.1 Host: api.emailsrvr.com User-Agent: Rackspace Management Interface X-Api-Signature: eGbq9/2hcZsRlr1JV1Pi:20010317143725:HKUn0aajpSDx7qqGK3vqzn3FglI= Content-Length: 53 [Content length: 53] Content-Type: application/x-www-form-urlencoded Line-based text data: application/x-www-form-urlencoded size=2048&displayName=John%20Smith&password=abcABC123
Responses
HTTP Status Code
On a successfully executed request, a 200 HTTP Code is returned. If the request was unsuccessful however, an HTTP error code in the 400s or 500s will be returned.
HTTP Response Body
If the request is an Index or Show request, the request data will be returned in the format specified in the HTTP Body.
Formats
Requests for data (index and show requests) are returned with XML or JSON data based on what your application populates the HTTP Accept headers with.
For XML, populate the header with 'text/xml' (ex: Headers!["Accept"] = "text/xml"). The XML document returned will conform to a published XSD (XML Schema Document). There are many ways to parse the data in an XML document, but we have found that the XPath tree-style traversal has served our purposes. In any case, your application will likely need to use a class library for your chosen method.
For JSON, populate the header with 'application/json' (ex: Headers!["Accept"] = "application/json"). As with XML, a library will likely be needed to parse the data.
HTTP Headers
The only data returned in the header is the error message (if any).
Header Name | Description | Example Header Value |
---|---|---|
x-error-message | The error message. See Errors. | Missing required field: name |
Errors
In the event of an error, the error message will be returned the HTTP header x-error-message and an HTTP Status Code in the 400s or 500s will be returned.
Note: Every language's HTTP library provides methods for retrieving HTTP response codes and response headers.
Below are some errors that are common to many operations. Each operation also has some specific errors which are outlined with the operation.
Description | HTTP Response Code | Sample Message |
---|---|---|
Format is invalid | 400 | When requesting an index or show on a resource the 'Accept' header should be either 'text/xml' or 'application/json' |
Expectation Failed: See Handling HTTP code 417: Expectation failed | 417 | (none) |
Customer account number is invalid | 404 | Invalid account number |
Domain is not found | 404 | <domain name> not found |
Mailbox is not found | 404 | Mailbox not found |
Required form field is missing | 400 | Missing required field: <required field> |
Required form field has null or empty string input | 400 | Required field <required field> cannot be empty |
Integer form field has non-integer input | 400 | Invalid format for <field>, input must be an integer |
Boolean form field has non-boolean input | 400 | Invalid format for <field>, input must be True or False |
Form data has an unrecognized field | 400 | Unrecognized field: <field> |
Entered invalid IP address | 400 | invalid ip address: 123 |
Paging
The results of Index actions are split into pages to lessen potentially high resource usage. The index URLs have a query string with parameters in the format "?size=xx&offset=xx." If a query parameter is omitted, the default value is used.
Query Parameter | Default | Maximum | Notes |
---|---|---|---|
size | 50 | 250 | This is the number of elements per page. |
offset | 0 | N/A | This is the number of items to offset away from the first item in the list. |
Example
A PHP Example of paging can be found here.
Examples
HTTP/1.1 200 OK Cache-Control: private Content-Type: text/xml; charset=utf-8 Server: Microsoft-IIS/7.0 Date: Fri, 04 Dec 2009 19:08:11 GMT Content-Length: 430 <?xml version="1.0" encoding="utf-8"?> <domainList xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="urn:xml:domainList"> <offset>0</offset> <size>50</size> <total>1</total> <domains> <domain> <name>customer.com</name> <accountNumber>123456</accountNumber> <serviceType>rsemail</serviceType> </domain> </domains> </domainList>
HTTP/1.1 404 Not Found Cache-Control: private Server: Microsoft-IIS/7.0 x-error-message: Customer Not Found Date: Fri, 04 Dec 2009 19:13:59 GMT Content-Length: 0
HTTP/1.1 400 Bad Request Cache-Control: private Server: Microsoft-IIS/7.0 x-error-message: Missing required field: type Date: Fri, 04 Dec 2009 19:17:29 GMT Content-Length: 0
Examples
Ruby
This examples is written in Ruby. To make the examples shorter, helper methods have been written. These methods are part of a NetMethods module. The contents of the NetMethods module is listed below.
require 'server.rb' server = Server.new response = server.get '/customers', server.xml_format #fields = Hash['serviceType' => 'exchange', 'exchangeMaxNumMailboxes' => '4'] #response = server.post '/customers/me/domains/newdomain.com', fields puts response.code puts response['x-error-message'] puts response.body
require 'test/unit/assertions' require 'net/http' require 'date' require 'date/format' require 'digest/sha1' require 'base64' require 'time' class Server include Test::Unit::Assertions def initialize(server='api.emailsrvr.com', version_prefix='/v0', user_key='xxxxxxxxxxxxxxxxxxxx', secret_hash='xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx') @server = server @version_prefix = version_prefix @user_key = user_key @secret_hash = secret_hash end # Response Type Enums def xml_format 'text/xml' end def json_format 'application/json' end # # HTTP Request Verbs # def get(url_string, format) uri = full_uri(url_string) headers = prepared_headers headers['Accept'] = format request = Net::HTTP::Get.new(request_uri(uri), headers) http_response = make_request request, uri end def delete(url_string) uri = full_uri(url_string) request = Net::HTTP::Delete.new(request_uri(uri), prepared_headers) http_response = make_request request, uri end def put(url_string, fields_hash) uri = full_uri(url_string) request = Net::HTTP::Put.new(request_uri(uri), prepared_headers) request.set_form_data(fields_hash) http_response = make_request request, uri end def post(url_string, fields_hash) uri = full_uri(url_string) request = Net::HTTP::Post.new(request_uri(uri), prepared_headers) request.set_form_data(fields_hash) http_response = make_request request, uri end # # HTTP Request Helpers # def make_request request, uri response = Net::HTTP::start(uri.host, uri.port) do |http| http.request request end response end def full_uri url_string URI.parse('http://' + @server + @version_prefix + url_string) end def request_uri uri request = uri.path if ! uri.query.nil? request = request + '?' + uri.query end request end def prepared_headers headers = Hash.new headers.merge! headers_auth_creds(@user_key, @secret_hash) headers['Accept'] = xml_format headers end def headers_auth_creds apiKey, secretKey userAgent = 'Ruby Test Client' timestamp = DateTime.now.strftime('%Y%m%d%H%M%S') data_to_sign = apiKey + userAgent + timestamp + secretKey hash = Base64.encode64(Digest::SHA1.digest(data_to_sign)) signature = apiKey + ":" + timestamp + ":" + hash headers = Hash['User-Agent' => userAgent, 'X-Api-Signature' => signature] end end
C#
This examples is written in C#.
using System; using System.Collections.Specialized; using System.Security.Cryptography; using System.Text; using System.Net; public class WebMethods { private WebClientBase client; private string baseUrl; private string apiKey; private string secretKey; public WebMethods(WebClientBase client, string baseUrl, string apiKey, string secretKey) { this.client = client; this.baseUrl = baseUrl; this.apiKey = apiKey; this.secretKey = secretKey; } public virtual string Get(string url) { return MakeRemoteCall((client) => { return client.DownloadString(baseUrl + url); }, format); } public virtual string Post(string url, NameValueCollection data) { return MakeRemoteCall((client) => { var bytes = client.UploadValues(baseUrl + url, data); return Encoding.UTF8.GetString(bytes); }, format); } private void SignMessage() { var userAgent = "C# Client Library"; client.Headers["User-Agent"] = userAgent; var dateTime = DateTime.UtcNow.ToString("yyyyMMddHHmmss"); var dataToSign = apiKey + userAgent + dateTime + secretKey; var hash = SHA1.Create(); var signedBytes = hash.ComputeHash(Encoding.UTF8.GetBytes(dataToSign)); var signature = Convert.ToBase64String(signedBytes); client.Headers["X-Api-Signature"] = apiKey + ":" + dateTime + ":" + signature; } private void AssignFormat(string format) { client.Headers["Accept"] = format; } private string MakeRemoteCall(Func<WebClientBase, string> remoteCall, string format) { try { SignMessage(); AssignFormat(format); return remoteCall.Invoke(client); } catch (WebException e) { throw new ApiException(e); } } }
PHP
The PHP Example can be found here.