Pulp

# Pulp 3.0.0 Minimum Viable Product (MVP)

<span style="color:red;">Lines highlighted in red need more attention.</span>

## Overall Guarantees

  - This is not a direct replacement for Pulp 2.

  - This is the minimum required for a 3.0.0 beta and GA.

  - All REST API calls will update the DB using transactions as necessary to ensure data integrity.

## Legend

\[done\] means merged and documented  

\[in-progress\] means started but not fully done  

If there is no label the effort has not yet been started

## Authentication

As an authenticated user I can manage user(s). \[done\]

  - Add a user

  - View user(s)

  - Update any user detail

  - Delete a user

As an API user, I can have documentation to generate a JSON Web Token (JWT) without the server being online. \[done\]

As an administrator, I can disable JWT token expiration. This configuration is in the settings file and is system-wide. \[done\]

As an administrator, I can configure the JWT tokens to expire after a configurable amount of time. This configuration is in the settings file and is system-wide. \[done\]

The JWT shall have a username identifier \[done\]

<span style="color:red;">As an API user, I can authenticate any API call (except to request a JWT) with a JWT. (not certain if this should be the behavior) \[in progress\]</span>

As an API user, I can invalidate all existing JWT tokens for a given user. \[done\]

As an authenticated user, when deleting a user 'foo', all of user 'foo's existing JWTs are invalidated. \[done\]

As an un-authenticated user, I can obtain a JWT token by using a username and password. \[done\]

## Repositories

As an authenticated user, I can list all repos.

  - All fields are included \[done\]

  - Pagination is supported \[done\]

  - <span style="color:orange;">Filtering support</span>

As an authenticated user, I can CRUD a repository

  - Create a repo \[done\]

  - Read a repo \[done\]

  - Update all mutable repo fields \[done\]

  - Delete a repo (asynchronous) \[done\]

As an authenticated user, I can list a repository's associated importers and publishers

  - All fields are included \[done\]

  - Pagination is supported \[done\]

As an authenticated user, I can see the number of content unit types with counts for each \[done\]\[[3059](https://pulp.plan.io/issues/3059)\]

## Importers

note: Importer attributes will commonly be available on importers, but aren't guaranteed to be used by all importers.

As an authenticated user, I can CRUD an importer

  - Create an importer

  - Read an importer

  - Update all mutable importer fields

  - Delete an importer (asynchronous)

As an authenticated user I can configure the following attributes on an Importer: \[done\]

  - validate (bool) \[optional: defaults to True\]: If true, the plugin will validate imported content.

  - ssl_ca_certificate (str) \[optional\] String containing a PEM encoded CA certificate used to validate the server certificate presented by the external source.

  - ssl_client_certificate (str) \[optional\] Contains a PEM encoded client certificate used for authentication.

  - ssl_client_key (str) \[optional\] Contains a PEM encoded private key used for authentication.

  - ssl_validation (bool) \[optional: defaults to True\]: If true, SSL peer validation must be performed.

  - proxy_url (str) \[optional\] Contains the proxy URL. Format: scheme://user:password@host:port.

  - username (str) \[optional\] Contains the username to be used for authentication when syncing.

  - password (str) \[optional\] Contains the password to be used for authentication when syncing.

  - <span style="color:orange;">download_policy (str) \[optional\] Contains the downloading policy name. This is a choice of three options:  

 \- immediate (default) - Downloading occurs during sync. The sync task does not complete until downloading is done.  

 \- background - Downloading is started by the sync but occurs in the background. The sync task completes before downloading is complete.  

 \- on-demand - The sync task records everything that would be downloaded but does not download content. Downloading occurs on demand as driven by client requests for content.</span>

  - feed_url (str) \[optional\] Contains the URL of an external content source. This is optional.

  - <span style="color:orange;">sync mode: (str) \[optional\]. It has two choices 'additive' and 'mirror':  

 \- additive (default) - all remote content is added to the local repository on sync. During sync no content is removed from the local repository.  

 \- mirror - the local content will mirror the remote content exactly, removing local content if not also present in the remote content.</span>

  - name (str) \[required\] Contains the name.

  - last_updated (datetime) \[read-only\] Contains the datetime of the last importer update.

  - last_synced (datetime) \[read-only\] Contains the datetime of the last importer sync.

## Publishers

note: Publisher attributes will commonly be available on publishers, but aren't guaranteed to be used by all publishers.

As an authenticated user, I can CRUD a publisher

  - Create a publisher

  - Read a publisher

  - Update all mutable publisher fields

  - Delete a publisher (asynchronous)

As an authenticated user I can configure the following attributes on a Publisher:

  - relative_path (str) \[optional\] The (relative) path component of the published url.

  - name - (str) \[required\] contains the name.

  - last_published (datetime) \[read-only\] When the last successful publish occurred.

  - last_updated (datetime) \[read-only\] The datetime of the last publisher update.

  - <span style="color:red;">auto_publish(bool) - ??? consider adding auto-publish feature to MVP</span>

## Sync and Publish

As an authenticated user, I can trigger an importer to sync. \[done\]

  - I can follow the progress of all syncs. (Syncs are asynchronous.)

  - I cannot pass "sync" options.

  - Auto-publish is not included as an importer property.

As an authenticated user, I can trigger a publisher to publish. \[done\]

  - I can follow the progress of all publishes. (Publishes are asynchronous.)

  - I cannot pass "publish" options.

## Content Manipulation

#### Uploading Artifacts

As an authenticated user, I can create an Artifact by uploading a file. \[done\]

As an authenticated user, I can specify a size and/or digest to validate the uploaded file. \[done\]

#### Creating Content Units

As an authenticated user, I can create a content unit by providing the content type (in the URL), references to Artifacts, and the metadata supplied in the POST body. \[done\]

#### Add / Remove Content from a Repository

As a user I can add content (specific existing content) to a repository

  - I can specify one or more content units by id/href

  - I can follow the progress. (adding are asynchronous).

As a user I can remove specified content from a repository

  - I can specify one or more content units by id/href

  - I can follow the progress. (removing are asynchronous).

#### Simple Copy

As a user, I can search (synchronous call) a repository's content using filtering.

  - note: In a separate call (async), I can add this content to another repository. This is effectively a copy operation in two calls.

As an authenticated user, I can import all content from one repository into another repository in a single async call. (Clone use case)

  - I can follow the progress. (adding are asynchronous).

#### Complex Copy

As a plugin writer I can provide a rich search features with abitrary viewsets. e.g. depsolving, verisoning, etc

Examples of specific plugin use cases motivating the above general viewset

  - As an authenticated user, I can add an Errata from one repository to another repository along with packages mentioned in the Errata and all their dependencies that are present in the source repository.

  - As an authenticated user, I can add bunch of dependencies and store n versions back for each RPM.

  - As an authenticated user, I can use depsolving and versioning copy features together

  - As an authenticated user, I can copy a puppet module and all of it's dependencies from one repository to another. 

  - As an authenticated user, I can depsolve units to be added to a destination repo based on an errata

#### Delete

<span style="color:red;">As an authenticated user, I can delete a specific content unit</span>  

<span style="color:red;">\* If the content unit is still in at least one repository the delete fails with a listing of all repositories the unit is part of.</span>  

<span style="color:red;">\* Artifacts and associated files from the deleted unit are cleaned up</span>

<span style="color:red;">As an authenticated user, I can delete multiple content units with filtering</span>  

<span style="color:red;">\* If a content unit is still in at least one repository the delete fails with a listing of all repositories the unit is part of.</span>  

<span style="color:red;">\* Artifacts and associated files from deleted units are cleaned up</span>

## <span style="color:red;">Versioned Repositories</span>

As an authenticated user, I can list the content in a particular repository version

  - All fields are included

  - Pagination is supported

  - <span style="color:red;">Filtering support</span>

As an authenticated user, I can discover a URL to the latest version of a repository  

<span class="resource repository the on attributes or endpoint, API dedicated a through \^ Is" style="color:red;"></span>

As an authenticated user, I can run a publisher without a repository version and have it default to the latest version.

<span style="color:red;">As an authenticated user, I can delete a repository version by specifying the version</span>

<span style="color:red;">As an authenticated user, I can upload multiple content(s?) and add create a single new version that adds all of them.</span>

## Orphan Content Units and Artifacts

As an authenticated user, I can cause an action that cleans up **both** orphaned content units and orphaned artifacts.

  - I cannot specify the units specifically (all types).

  - I can follow the progress of all cleanups. (Cleanups are asynchronous.)

## Task Management

As an authenticated user, I can list all tasks

  - <span style="color:orange;">Filtering support on \['state', 'id', 'group'\]</span>

  - <span style="color:orange;">This does not include associated progress reports</span>

As an authenticated user, I can see a detail view for a specific task \[done\]

  - all attributes of a task

  - all associated progress reports

As an authenticated user, I can cancel a task \[done\]

  - don't dare to use the DELETE verb!

As an authenticated user, I can delete tasks.

## Task Group

<span style="color:red;">I can view a summary of the status of all tasks in a group</span>

## Status

As an unauthenticated user I can view the status of Pulp workers, resource managers, and celerybeats. \[done\]

As an unauthenticated user I can view the status of the web server's connection to the database and message broker. \[done\]

As an unauthenticated user I can view the versions of core and each installed plugin.

## Plugin API

As a plugin writer, I have a plugin API that is semantically versioned at 0.x separate from the REST API \[done\]

As a plugin writer, I can report progress with a message and state \[done\]

As a plugin writer, I can report progress with an optional suffix \[done\]

As a plugin writer, I can report progress with a total count of things to do an the current count of things done \[done\]

As a plugin writer, non-fatal exceptions on the Task and are included in the Task detail. non_fatal exceptions do not cause the Task to be marked as failed, but may be interpreted by the user as not fully successful. \[done\]

As a plugin writer, the working directory is set before Task work is done and cleaned up afterwards. I should not need to interact with the file system outside of the working dir. \[done\]

<span style="color:red;">As a plugin writer, I can provide a subclassed Importer. The importer's responsibility is to synchronize the content of a Pulp repository with the content of a remote repository. (a circular import problem needs to be discussed and may cause this to change) \[done\]</span>

<span style="color:red;">As a plugin writer, I can provide a subclassed Publisher. The publisher's responsibility is to publish content. (a circular import problem needs to be discussed and may cause this to change) \[done\]</span>

As a plugin writer, I can define unit types by subclassing Content models to provide concrete content unit types to be manged by the platform. \[done\]

As a plugin writer, I can interact with and create Artifacts \[done\]

As a plugin writer, my app will be discovered by Pulp's app via an entry point provided by the plugin writer \[done\]

As a plugin writer, I can use the plugin API to query content units/artifacts associated with a repository. \[done\]

As a plugin writer, I can add and remove content units to and from a repository. \[done\]

## Plugin Writer "live APIs"

<span style="color:red;">TBD</span>

## CLI

We will use coreapi-cli to generate a one to one mapping of cli commands to rest api schema #3068  

<span style="color:orange;">We will have a wrapper for coreapi-cli. This wrapper will handle parallel progress reporting</span>

## Download API

As a plugin writer, I can download files via

  - http://

  - https://

  - file://

As a plugin writer, I can configure a downloader with:

  - Basic Auth

  - SSL Cert Client Auth

  - Custom CAs will be configured via a "trust store" either on the system or similar. Pulp will not do anything to read/load/manage CAs directly.

As a plugin writer, I can provide arbitrary behaviors for customized downloaders

  - For example token authentication in the docker plugin

As a plugin writer, I can have connection pooling/reuse

As a plugin writer, I have proxy settings

  - proxy url (containing basic auth info)

As a plugin writer, I can have great logs

As a user, I have documentation about how to use something for bandwidth limiting

As a plugin writer, I can configure the validation mechanisms used at download time

  - checksum validation - minimum (md5, sha1, sha256, sha512)

  - size validation

<span style="color:red;">As a plugin writer, I expect units that are missing from the remote repository to not be created in Pulp when using the immediate download policy.</span>

<span style="color:red;">As a plugin writer, I expect units that are missing from the remote repository to be created in Pulp when using background or on_demand download policies.</span>

As a plugin writer I can configure mirror lists and rotate between the mirrors

  - round robin

  - nearest mirror support

As a plugin writer, the plugin API provides tooling whereby I can provide the content to be added and removed from the repository. This tooling supports both immediate and deferred downloading.

As a plugin writer I can manage the catalog by using ChangeSets

As a plugin writer, the plugin can participate in adding content for cases where the decision to add additional content is based content that has been downloaded.

As a plugin writer, I can fetch content myself (but I am not encouraged to do so) with code I write

As a plugin writer, I can CRUD content units

## {color:red} Consumer Applicability

<span style="color:red;">Using consumer profiles and repo bindings I can compute applicability with 2.y parity  

Performance needs to be awesome</span>

<span style="color:red;">\_(Is the Pulp Consumer going away in Pulp 3? If so, is this section still appropriate?)\_</span>

## Migrations only involving Pulp 3

Users can run "pulp-manager migrate" to migrate the database and adjust state in other locations (filesystem, message broker, ...). \[done\]

## Web Server Integration

<span style="color:red;">As a user, I can have content efficiently served to me by Apache by Pulp using the X-SEND response headers \[[2914](https://pulp.plan.io/issues/2914)\]</span>  

<span style="color:red;">As a user, I can have content efficiently served to me by Nginx by Pulp using the X-Accel-Redirect response headers \[[2914](https://pulp.plan.io/issues/2914)\]</span>

<span style="color:red;">As a user, I can have an Ansible role to install Apache which enables Apache integration for Pulp and configures Apache to serve Pulp. \[[2921](https://pulp.plan.io/issues/2921)\]</span>  

<span style="color:red;">As a user, I can have an Ansible role to install Nginx which enables Nginx integration for Pulp and configures Nginx to serve Pulp. \[[2922](https://pulp.plan.io/issues/2922)\]</span>

## Glossary

Repository - A named collection of content.

Artifact - A file associated with one content (unit). Artifacts are not shared between content (units). Create a content unit using an uploaded file ID as the source for its metadata. Create Artifacts associated with the content unit using an uploaded file ID for each; commit as a single transaction.

Content (unit) - A single piece of content manged by Pulp. Each file associated with a content (unit) is called an Artifact. Each content (unit) may have zero or many Artifacts.

Orphan Content (unit): A content unit that is a member of 0 repositories

Orphan Artifact: An Artifact that is associated with 0 Content Units and 0 Publications

Add (Content Unit): An operation causing a repository to contain a content unit(s)

Remove (content unit): An operation causing a repository to not contain a content unit(s)