mirror of
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dd1d191966
* macro 'alias' was renamed to 'rename' * fixed `cargo test` on main project The latter pointed me to the serde issue, which would have made everything fail when actually used to communicate with google servers.
181 lines
10 KiB
Markdown
181 lines
10 KiB
Markdown
<!---
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DO NOT EDIT !
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This file was generated automatically from 'src/mako/api/README.md.mako'
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DO NOT EDIT !
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-->
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The `google-taskqueue1_beta2` library allows access to all features of the *Google taskqueue* service.
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This documentation was generated from *taskqueue* crate version *0.1.4+20141111*, where *20141111* is the exact revision of the *taskqueue:v1beta2* schema built by the [mako](http://www.makotemplates.org/) code generator *v0.1.4*.
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Everything else about the *taskqueue* *v1_beta2* API can be found at the
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[official documentation site](https://developers.google.com/appengine/docs/python/taskqueue/rest).
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# Features
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Handle the following *Resources* with ease from the central [hub](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/struct.Taskqueue.html) ...
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* taskqueues
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* [*get*](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/struct.TaskqueueGetCall.html)
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* [tasks](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/struct.Task.html)
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* [*delete*](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/struct.TaskDeleteCall.html), [*get*](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/struct.TaskGetCall.html), [*insert*](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/struct.TaskInsertCall.html), [*lease*](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/struct.TaskLeaseCall.html), [*list*](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/struct.TaskListCall.html), [*patch*](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/struct.TaskPatchCall.html) and [*update*](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/struct.TaskUpdateCall.html)
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# Structure of this Library
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The API is structured into the following primary items:
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* **[Hub](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/struct.Taskqueue.html)**
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* a central object to maintain state and allow accessing all *Activities*
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* creates [*Method Builders*](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.MethodsBuilder.html) which in turn
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allow access to individual [*Call Builders*](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.CallBuilder.html)
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* **[Resources](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.Resource.html)**
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* primary types that you can apply *Activities* to
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* a collection of properties and *Parts*
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* **[Parts](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.Part.html)**
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* a collection of properties
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* never directly used in *Activities*
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* **[Activities](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.CallBuilder.html)**
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* operations to apply to *Resources*
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All *structures* are marked with applicable traits to further categorize them and ease browsing.
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Generally speaking, you can invoke *Activities* like this:
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```Rust,ignore
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let r = hub.resource().activity(...).doit()
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```
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Or specifically ...
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```ignore
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let r = hub.tasks().lease(...).doit()
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let r = hub.tasks().insert(...).doit()
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let r = hub.tasks().delete(...).doit()
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let r = hub.tasks().patch(...).doit()
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let r = hub.tasks().list(...).doit()
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let r = hub.tasks().get(...).doit()
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let r = hub.tasks().update(...).doit()
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```
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The `resource()` and `activity(...)` calls create [builders][builder-pattern]. The second one dealing with `Activities`
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supports various methods to configure the impending operation (not shown here). It is made such that all required arguments have to be
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specified right away (i.e. `(...)`), whereas all optional ones can be [build up][builder-pattern] as desired.
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The `doit()` method performs the actual communication with the server and returns the respective result.
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# Usage
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## Setting up your Project
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To use this library, you would put the following lines into your `Cargo.toml` file:
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```toml
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[dependencies]
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google-taskqueue1_beta2 = "*"
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```
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## A complete example
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```Rust
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extern crate hyper;
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extern crate yup_oauth2 as oauth2;
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extern crate google_taskqueue1_beta2 as taskqueue1_beta2;
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use taskqueue1_beta2::{Result, Error};
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use std::default::Default;
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use oauth2::{Authenticator, DefaultAuthenticatorDelegate, ApplicationSecret, MemoryStorage};
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use taskqueue1_beta2::Taskqueue;
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// Get an ApplicationSecret instance by some means. It contains the `client_id` and
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// `client_secret`, among other things.
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let secret: ApplicationSecret = Default::default();
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// Instantiate the authenticator. It will choose a suitable authentication flow for you,
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// unless you replace `None` with the desired Flow.
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// Provide your own `AuthenticatorDelegate` to adjust the way it operates and get feedback about
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// what's going on. You probably want to bring in your own `TokenStorage` to persist tokens and
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// retrieve them from storage.
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let auth = Authenticator::new(&secret, DefaultAuthenticatorDelegate,
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hyper::Client::new(),
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<MemoryStorage as Default>::default(), None);
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let mut hub = Taskqueue::new(hyper::Client::new(), auth);
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// You can configure optional parameters by calling the respective setters at will, and
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// execute the final call using `doit()`.
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// Values shown here are possibly random and not representative !
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let result = hub.tasks().lease("project", "taskqueue", -65, -42)
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.tag("et")
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.group_by_tag(true)
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.doit();
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match result {
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Err(e) => match e {
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Error::HttpError(err) => println!("HTTPERROR: {:?}", err),
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Error::MissingAPIKey => println!("Auth: Missing API Key - used if there are no scopes"),
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Error::MissingToken => println!("OAuth2: Missing Token"),
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Error::Cancelled => println!("Operation canceled by user"),
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Error::UploadSizeLimitExceeded(size, max_size) => println!("Upload size too big: {} of {}", size, max_size),
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Error::Failure(_) => println!("General Failure (hyper::client::Response doesn't print)"),
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Error::FieldClash(clashed_field) => println!("You added custom parameter which is part of builder: {:?}", clashed_field),
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Error::JsonDecodeError(err) => println!("Couldn't understand server reply - maybe API needs update: {:?}", err),
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},
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Ok(_) => println!("Success (value doesn't print)"),
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}
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```
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## Handling Errors
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All errors produced by the system are provided either as [Result](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/enum.Result.html) enumeration as return value of
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the doit() methods, or handed as possibly intermediate results to either the
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[Hub Delegate](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.Delegate.html), or the [Authenticator Delegate](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/../yup-oauth2/trait.AuthenticatorDelegate.html).
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When delegates handle errors or intermediate values, they may have a chance to instruct the system to retry. This
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makes the system potentially resilient to all kinds of errors.
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## Uploads and Downloads
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If a method supports downloads, the response body, which is part of the [Result](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/enum.Result.html), should be
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read by you to obtain the media.
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If such a method also supports a [Response Result](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.ResponseResult.html), it will return that by default.
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You can see it as meta-data for the actual media. To trigger a media download, you will have to set up the builder by making
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this call: `.param("alt", "media")`.
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Methods supporting uploads can do so using up to 2 different protocols:
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*simple* and *resumable*. The distinctiveness of each is represented by customized
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`doit(...)` methods, which are then named `upload(...)` and `upload_resumable(...)` respectively.
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## Customization and Callbacks
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You may alter the way an `doit()` method is called by providing a [delegate](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.Delegate.html) to the
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[Method Builder](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.CallBuilder.html) before making the final `doit()` call.
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Respective methods will be called to provide progress information, as well as determine whether the system should
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retry on failure.
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The [delegate trait](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.Delegate.html) is default-implemented, allowing you to customize it with minimal effort.
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## Optional Parts in Server-Requests
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All structures provided by this library are made to be [enocodable](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.RequestValue.html) and
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[decodable](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.ResponseResult.html) via *json*. Optionals are used to indicate that partial requests are responses
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are valid.
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Most optionals are are considered [Parts](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.Part.html) which are identifiable by name, which will be sent to
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the server to indicate either the set parts of the request or the desired parts in the response.
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## Builder Arguments
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Using [method builders](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.CallBuilder.html), you are able to prepare an action call by repeatedly calling it's methods.
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These will always take a single argument, for which the following statements are true.
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* [PODs][wiki-pod] are handed by copy
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* strings are passed as `&str`
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* [request values](http://byron.github.io/google-apis-rs/google-taskqueue1_beta2/trait.RequestValue.html) are borrowed
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Arguments will always be copied or cloned into the builder, to make them independent of their original life times.
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[wiki-pod]: http://en.wikipedia.org/wiki/Plain_old_data_structure
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[builder-pattern]: http://en.wikipedia.org/wiki/Builder_pattern
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[google-go-api]: https://github.com/google/google-api-go-client
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# License
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The **taskqueue1_beta2** library was generated by Sebastian Thiel, and is placed
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under the *MIT* license.
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You can read the full text at the repository's [license file][repo-license].
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[repo-license]: https://github.com/Byron/google-apis-rs/LICENSE.md
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