Twittex.API

Twitter API wrapper.

Provides convenience functions for working with Twitter’s RESTful API.

You can use head/3, get/3, post/4, put/4, patch/4, delete/3 and others using a relative url pointing to the API endpoint. For example:

iex> API.get! "/search/tweets.json?q=%23myelixirstatus"
%HTTPoison.Response{}

Authentication

Under the hood, the Twittex.API module uses HTTPoison.Base and overrides the request/5 method to add support for following OAuth authentication method:

To request an access token with one of the method listed above. See get_token/1 and get_token/3. Here, a brief example:

iex> token = API.get_token!
%OAuth2.AccessToken{}

With Application-only authentication you don’t have the context of an authenticated user and this means that any request to API for endpoints that require user context, such as posting tweets, will not work.

Twitter requires clients accessing their API to be authenticated. This means that you must provide an authentication token for each request.

This can be done by passing an OAuth token as a value of the :auth option:

iex> API.get! "/statuses/home_timeline.json", [], auth: token
%HTTPoison.Response{}

Summary

Functions

Issues a DELETE request to the given url

Issues a DELETE request to the given url, raising an exception in case of failure

Issues a GET request to the given url

Issues a GET request to the given url, raising an exception in case of failure

Request an [Application-only authentication] token

Request a user specific ([xAuth]) authentication token

Same as get_token/1 but raises OAuth2.Error if an error occurs during the request

Same as get_token/3 but raises HTTPoison.Error if an error occurs during the request

Issues a HEAD request to the given url

Issues a HEAD request to the given url, raising an exception in case of failure

Issues an OPTIONS request to the given url

Issues a OPTIONS request to the given url, raising an exception in case of failure

Issues a PATCH request to the given url

Issues a PATCH request to the given url, raising an exception in case of failure

Issues a POST request to the given url

Issues a POST request to the given url, raising an exception in case of failure

Issues a PUT request to the given url

Issues a PUT request to the given url, raising an exception in case of failure

Issues an HTTP request with the given method to the given url

Issues an HTTP request with the given method to the given url, raising an exception in case of failure

Starts HTTPoison and its dependencies

Types

headers :: [{binary, binary}]

Functions

delete(url, headers \\ [], options \\ [])

Specs

delete(binary, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues a DELETE request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

delete!(url, headers \\ [], options \\ [])

Specs

delete!(binary, headers, Keyword.t) ::
  HTTPoison.Response.t |
  HTTPoison.AsyncResponse.t

Issues a DELETE request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

get(url, headers \\ [], options \\ [])

Specs

get(binary, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues a GET request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

get!(url, headers \\ [], options \\ [])

Specs

get!(binary, headers, Keyword.t) ::
  HTTPoison.Response.t |
  HTTPoison.AsyncResponse.t

Issues a GET request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

get_token(options \\ [])

Specs

get_token(Keyword.t) ::
  {:ok, OAuth2.AccessToken.t} |
  {:error, OAuth2.Error.t}

Request an Application-only authentication token.

Returns {:ok, token} if the request is successful, {:error, reason} otherwise.

With Application-only authentication you don’t have the context of an authenticated user and this means that any request to API for endpoints that require user context, such as posting tweets, will not work.

get_token(username, password, options \\ [])

Specs

get_token(String.t, String.t, Keyword.t) ::
  {:ok, OAuther.Credentials.t} |
  {:error, HTTPoison.Error.t}

Request a user specific (xAuth) authentication token.

Returns {:ok, token} if the request is successful, {:error, reason} otherwise.

xAuth provides a way for applications to exchange a username and password for an OAuth access token. Once the access token is retrieved, the application should dispose of the login and password corresponding to the user.

get_token!(options \\ [])

Specs

get_token!(Keyword.t) :: OAuth2.AccessToken.t

Same as get_token/1 but raises OAuth2.Error if an error occurs during the request.

get_token!(username, password, options \\ [])

Specs

get_token!(String.t, String.t, Keyword.t) :: OAuther.Credentials.t

Same as get_token/3 but raises HTTPoison.Error if an error occurs during the request.

head(url, headers \\ [], options \\ [])

Specs

head(binary, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues a HEAD request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

head!(url, headers \\ [], options \\ [])

Specs

head!(binary, headers, Keyword.t) ::
  HTTPoison.Response.t |
  HTTPoison.AsyncResponse.t

Issues a HEAD request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

options(url, headers \\ [], options \\ [])

Specs

options(binary, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues an OPTIONS request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

options!(url, headers \\ [], options \\ [])

Specs

options!(binary, headers, Keyword.t) ::
  HTTPoison.Response.t |
  HTTPoison.AsyncResponse.t

Issues a OPTIONS request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

patch(url, body, headers \\ [], options \\ [])

Specs

patch(binary, binary, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues a PATCH request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

patch!(url, body, headers \\ [], options \\ [])

Specs

patch!(binary, binary, headers, Keyword.t) ::
  HTTPoison.Response.t |
  HTTPoison.AsyncResponse.t

Issues a PATCH request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

post(url, body, headers \\ [], options \\ [])

Specs

post(binary, binary, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues a POST request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

post!(url, body, headers \\ [], options \\ [])

Specs

post!(binary, binary, headers, Keyword.t) ::
  HTTPoison.Response.t |
  HTTPoison.AsyncResponse.t

Issues a POST request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

put(url, body, headers \\ [], options \\ [])

Specs

put(binary, binary, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues a PUT request to the given url.

Returns {:ok, response} if the request is successful, {:error, reason} otherwise.

See request/5 for more detailed information.

put!(url, body, headers \\ [], options \\ [])

Specs

put!(binary, binary, headers, Keyword.t) ::
  HTTPoison.Response.t |
  HTTPoison.AsyncResponse.t

Issues a PUT request to the given url, raising an exception in case of failure.

If the request does not fail, the response is returned.

See request!/5 for more detailed information.

request(method, url, body \\ "", headers \\ [], options \\ [])

Specs

request(atom, binary, binary, headers, Keyword.t) ::
  {:ok, HTTPoison.Response.t | HTTPoison.AsyncResponse.t} |
  {:error, HTTPoison.Error.t}

Issues an HTTP request with the given method to the given url.

This function is usually used indirectly by get/3, post/4, put/4, etc

Args:

  • method - HTTP method as an atom (:get, :head, :post, :put, :delete, etc.)
  • url - target url as a binary string or char list
  • body - request body. See more below
  • headers - HTTP headers as an orddict (e.g., [{"Accept", "application/json"}])
  • options - Keyword list of options

Body:

  • binary, char list or an iolist
  • {:form, [{K, V}, ...]} - send a form url encoded
  • {:file, "/path/to/file"} - send a file

Options:

  • :timeout - timeout to establish a connection, in milliseconds. Default is 8000
  • :recv_timeout - timeout used when receiving a connection. Default is 5000
  • :stream_to - a PID to stream the response to
  • :proxy - a proxy to be used for the request; it can by a regular url or a {Host, Proxy} tuple
  • :proxy_auth - proxy authentication {User, Password} tuple
  • :ssl - SSL options supported by the ssl erlang module
  • :follow_redirect - a boolean that causes redirects to be followed
  • :max_redirect - an integer denoting the maximum number of redirects to follow

Timeouts can be an integer or :infinity

This function returns {:ok, response} or {:ok, async_response} if the request is successful, {:error, reason} otherwise.

Examples

request(:post, "https://my.website.com", "{\"foo\": 3}", [{"Accept", "application/json"}])
request!(method, url, body \\ "", headers \\ [], options \\ [])

Specs

request!(atom, binary, binary, headers, Keyword.t) :: HTTPoison.Response.t

Issues an HTTP request with the given method to the given url, raising an exception in case of failure.

request!/5 works exactly like request/5 but it returns just the response in case of a successful request, raising an exception in case the request fails.

start()

Starts HTTPoison and its dependencies.