Adding documentation

This commit is contained in:
Luca Frosini 2024-05-22 11:38:58 +02:00
parent 1346a198d4
commit 0e2a635bba
6 changed files with 402 additions and 0 deletions

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# Minimal makefile for Sphinx documentation
#
# You can set these variables from the command line, and also
# from the environment for the first two.
SPHINXOPTS ?=
SPHINXBUILD ?= sphinx-build
SOURCEDIR = .
BUILDDIR = _build
# Put it first so that "make" without argument is like "make help".
help:
@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
.PHONY: help Makefile
# Catch-all target: route all unknown targets to Sphinx using the new
# "make mode" option. $(O) is meant as a shortcut for $(SPHINXOPTS).
%: Makefile
@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

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# Configuration file for the Sphinx documentation builder.
#
# This file only contains a selection of the most common options. For a full
# list see the documentation:
# https://www.sphinx-doc.org/en/master/usage/configuration.html
# -- Path setup --------------------------------------------------------------
# If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
#
# import os
# import sys
# sys.path.insert(0, os.path.abspath('.'))
# -- Project information -----------------------------------------------------
project = 'gCube Resource Manager Service'
copyright = '2024, Luca Frosini (ISTI-CNR)'
author = 'Luca Frosini (ISTI-CNR)'
# The full version, including alpha/beta/rc tags
release = '1.0.0'
# -- General configuration ---------------------------------------------------
# Add any Sphinx extension module names here, as strings. They can be
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
# ones.
extensions = []
# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']
# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
# This pattern also affects html_static_path and html_extra_path.
exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
# -- Options for HTML output -------------------------------------------------
# The theme to use for HTML and HTML Help pages. See the documentation for
# a list of builtin themes.
#
html_theme = 'sphinxdoc'
# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
html_static_path = ['_static']

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---
title: Welcome to gCube Resource Manager Service documentation
---
Resource Manager Service is a RESTful application which exposes operations via REST-API.
See the available [REST-API docs](../api-docs/index.html).
Base URL
========
In the production environment, its current value is
Authorization
=============
D4Science adopts state-of-the-art industry standards for authentication
and authorization. Specifically, the implementation fully adopts [OIDC
(OpenID Connect)](https://openid.net/connect) for authentication and UMA
2 (User-Managed Authorization) for authorization flows. [JSON Web Token
(JWT) Access token](https://jwt.io/) are used for both authentication
and authorization.
Obtain your Bearer token here:
<https://dev.d4science.org/how-to-access-resources>
Service
=======
You can call the methods of the Web Service by writing your own REST
client application or using existing REST client plugins.
HTTP Statuses
-------------
Any successful operation returns *200 OK* HTTP status code. The create
operation returns *201 Created*. Any Background operation returns *202
Accepted*. Any operation which does not provide any content return *204
No Content*.
The most common error status a client can obtain are:
- **400 Bad Request** used to indicate a clients error
<https://tools.ietf.org/html/rfc7231#section-6.5.1>;
- **401 Unauthorized** used to indicate that the client does not
provide the authorization token in the HTTP Header or the client has
not enough right to perform such request
<https://tools.ietf.org/html/rfc7235#section-3.1>;
- **404 Not Found** used to indicate that the requested instance does
not exist <https://tools.ietf.org/html/rfc7231#section-6.5.4>;
- **405 Method Not Allowed** the used HTTP method is not supported for
the requested URL
<https://tools.ietf.org/html/rfc7231#section-6.5.5>. The response
contains the *Allow* HTTP Header indicating the supported HTTP
method for such URL
<https://tools.ietf.org/html/rfc7231#section-7.4.1>;
- **409 Conflict** the request could not be completed due to a
conflict with the current state of the target resource (e.g. the
name of the resource already exists)
<https://tools.ietf.org/html/rfc7231#section-6.5.8>;
- **500 Internal Server Error** indicate a server failure
<https://tools.ietf.org/html/rfc7231#section-6.6.1>.
You can find a complete list of HTTP Status at
<https://httpstatuses.com/>
If you get a *500 Internal Server Error*, please report it in the [gCube
ticketing system](https://support.d4science.org).
Please use this checklist before reporting an error:
- Replicate the request;
- The failure could be temporal due to network error, server issue and
many other temporal issues. For this reason, please retry the
request after a certain amount of time before reporting the issue;
- indicate how to replicate the error;
- indicate the time when the error occurred (this simplifies
identifying the issue).
HTTP Methods
------------
Resource Manager is a pure RESTful service. It uses standard HTTP Methods to perform
listing of collections and CRUD (Create Read Update Delete) operations
on instances.
:::{table} Supported operations
:align: center
:widths: grid
| Operation | HTTP Method | URL | Success HTTP Status | Safe | Idempotent |
|-----------|-------------|-----|---------------------|------|------------|
| **Supported<br/>HTTP Methods** | OPTIONS | /{COLLECTION} | 204 No Content | Y | Y |
| **List** | GET | /{COLLECTION} | 200 OK | Y | Y |
| **Count** | GET | /{COLLECTION}?count=true | 200 OK | Y | Y |
| **Exists** | HEAD | /{COLLECTION} | 204 No Content | Y | Y |
| **Create** | POST | /{COLLECTION} | 201 Created | N | N |
| **Supported<br/>HTTP Methods** | OPTIONS | /{COLLECTION}/{INSTANCE_ID} | 204 No Content | Y | Y |
| **Exist** | HEAD | /{COLLECTION}/{INSTANCE_ID} | 204 No Content | Y | Y |
| **Read** | GET | /{COLLECTION}/{INSTANCE_ID} | 200 OK | Y | Y |
| **Update** | PUT | /{COLLECTION}/{INSTANCE_ID} | 200 OK | N | Y |
| **Patch** | PATCH | /{COLLECTION}/{INSTANCE_ID} | 200 OK | N | Y |
| **Delete** | DELETE | /{COLLECTION}/{INSTANCE_ID} | 204 No Content | N | N |
| **Purge** | PURGE | /{COLLECTION}/{INSTANCE_ID} | 204 No Content | N | N |
| **Purge** | DELETE | /{COLLECTION}/{INSTANCE_ID}?purge=true | 204 No Content | N | N |
### About URL
The presented URL uses the following convention:
- **{COLLECTION}** is the plural name of the entity type;
- **{INSTANCE\_ID}** is an identification that enables univocally
identifying the instance in the collection.
### About Safety and Idempotency properties
- A method is *Safe* if it does not produce any side effects. \"This
does not prevent an implementation from including behaviour that is
potentially harmful, that is not entirely read-only, or that causes
side effects while invoking a safe method\"
<https://tools.ietf.org/html/rfc7231#section-4.2.1>;
- A method is *Idempotent* if the same operation repeated multiple
times has the same side effect than using it one time. \"repeating
the request will have the same intended effect, even if the original
request succeeded, though the response might differ\"
<https://tools.ietf.org/html/rfc7231#section-4.2.2>.
You can find more information about HTTP Methods at
<https://restfulapi.net/http-methods/>
### Uncommon HTTP Methods
- PATCH method allows to perform a differential update (i.e. an update
which provides only the differences and not the whole new
representation);
- PURGE method is not a standard but is widely used in service which
requires this action (e.g.
[Varnish](https://varnish-cache.org/docs/3.0/tutorial/purging.html),
[Squid](https://wiki.squid-cache.org/SquidFaq/OperatingSquid#How_can_I_purge_an_object_from_my_cache.3F)).
gCat provides support for this method, but to support a wider range
of clients, it also provides the Purge action via *DELETE* with the
additional get parameter `purge=true`.
Content-Type
------------
Any request must contain an indication of the interesting content type.
The client must specify the **Accept** HTTP Header for any operation
returning a result.
``` {.rest}
Accept: application/json
```
For any operation sending content to the service, it is necessary to
specify the **Content-Type** HTTP Header.
``` {.rest}
Content-Type: application/json
```
The service accepts and returns only JSON objects.
Collections
-----------
The following collections are available
....
Roles
-----
Any user has one or more roles in the catalogue. Only the VRE Manager
can assign roles to VRE users.
The catalogue uses the following hierarchic roles:
**Manager**:
: .......;
Java Client
===========
We provide the following Java Client out-of-the-box.
> ::: {.tip}
> ::: {.title}
> Tip
> :::
>
> If you\'re coding in Java, it is recommended that you use this Java
> Client.
> :::
**Maven Coordinates**
``` {.xml}
<groupId></groupId>
<artifactId></artifactId>
<version></version>
```
**Methods Result**
The service exposes [its methods](../api-docs/index.html) using a
standard naming approach. Moreover, they accept (in the case of HTTP
POST/PUT methods) JSON objects.
> ::: {.important}
> ::: {.title}
> Important
> :::
>
> The result of all methods is always a JSON object as per below:
> :::
*Inputs are automatically validated before the request is served.*
**Usage examples**
Service Discovery on IS
=======================
The service can be discovered in the Facet Based IS as EService with the
following json query:
``` {.json}
{
"@class": "EService",
"consistsOf": [
{
"@class": "IsIdentifiedBy",
"target": {
"@class": "SoftwareFacet",
"group": "org.gcube.resource-management",
"name": "resource-manager"
}
}
]
}
```
Service Maven Coordinates
=========================
The maven coordinates of gCat service are:
``` {.xml}
<groupId>org.gcube.resource-management</groupId>
<artifactId>resource-manager</artifactId>
```

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@ECHO OFF
pushd %~dp0
REM Command file for Sphinx documentation
if "%SPHINXBUILD%" == "" (
set SPHINXBUILD=sphinx-build
)
set SOURCEDIR=.
set BUILDDIR=_build
if "%1" == "" goto help
%SPHINXBUILD% >NUL 2>NUL
if errorlevel 9009 (
echo.
echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
echo.installed, then set the SPHINXBUILD environment variable to point
echo.to the full path of the 'sphinx-build' executable. Alternatively you
echo.may add the Sphinx directory to PATH.
echo.
echo.If you don't have Sphinx installed, grab it from
echo.https://www.sphinx-doc.org/
exit /b 1
)
%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
goto end
:help
%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
:end
popd

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name: ${project.artifactId}
group: ${project.groupId}
version: ${project.version}
description: ${project.description}
excludes:
- path: /docs.*
- path: /api-docs.*

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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<display-name>Hello World</display-name>
<description>
A gcube HelloWorld service - smartgears 4
</description>
<servlet>
<servlet-name>HelloWorld</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>org.gcube.service.helloworld.services</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>HelloWorld</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>