pulp3_lazy_sequence_diagram.dot

@startuml
autonumber

title Lazy Call Flow Sequence Diagram

participant Client

box "Pulp Core Services (pulp.yourdomain.com)"
participant "Pulp Content App"
participant PostgreSQL
end box

participant "example.org"

== No PublishedArtifact, No PublishedMetadata, pass_through=False, policy='streamed' ==

autonumber

' Request content
Client [#red]-> "Pulp Content App" : GET /pulp/content/zoo/pig.rpm
activate "Pulp Content App"

' Check the database for the the Distribution
"Pulp Content App" [#cyan]-> PostgreSQL : Query for the Distribution serving /pulp/content/zoo/pig.rpm
"Pulp Content App" <-[#cyan] PostgreSQL : Distribution base_path='zoo' Found

||45||

' Check for PublishedArtifact or PublishedMetadata associated with that Distribution's Publication
"Pulp Content App" [#cyan]-> PostgreSQL : Query for PublishedArtifact or PublishedMetadata associated with the Distribution's Publication
"Pulp Content App" <-[#cyan] PostgreSQL : PublishedArtifact or PublishedMetadata found

||45||

' See if pass_through=True and if so query for an Artifact
"Pulp Content App" [#cyan]-> PostgreSQL : Query for an Artifact in the RepoVersion with relative_path='pig.rpm'
"Pulp Content App" <-[#cyan] PostgreSQL : Artifact Not Found

||45||

' Find a RemoteArtifact for 'pig.rpm' and its Remotes
"Pulp Content App" [#cyan]-> PostgreSQL : Query for RemoteArtifact for 'pig.rpm' and its Remotes
"Pulp Content App" <-[#cyan] PostgreSQL : RemoteArtifact for 'pig.rpm' and its Remotes Found

||45||

' Download Content From Remote
"Pulp Content App" [#green]-> "example.org" : GET /path/to/repo/pig.rpm
"Pulp Content App" <-[#green] "example.org" : 200 OK + binary data

'Return 404
Client <-[#red] "Pulp Content App" : 200 OK + binary data
deactivate "Pulp Content App"

== No PublishedArtifact, No PublishedMetadata, pass_through=False, policy='streamed' ==

== No PublishedArtifact, No PublishedMetadata, pass_through=False, policy='on_demand' ==

autonumber

' Request content
Client [#red]-> "Pulp Content App" : GET /pulp/content/zoo/pig.rpm
activate "Pulp Content App"

' Check the database for the the Distribution
"Pulp Content App" [#cyan]-> PostgreSQL : Query for the Distribution serving /pulp/content/zoo/pig.rpm
"Pulp Content App" <-[#cyan] PostgreSQL : Distribution base_path='zoo' Found

||45||

' Check for PublishedArtifact or PublishedMetadata associated with that Distribution's Publication
"Pulp Content App" [#cyan]-> PostgreSQL : Query for PublishedArtifact or PublishedMetadata associated with the Distribution's Publication
"Pulp Content App" <-[#cyan] PostgreSQL : PublishedArtifact or PublishedMetadata found

||45||

' See if pass_through=True and if so query for an Artifact
"Pulp Content App" [#cyan]-> PostgreSQL : Query for an Artifact in the RepoVersion with relative_path='pig.rpm'
"Pulp Content App" <-[#cyan] PostgreSQL : Artifact Not Found

||45||

' Find a RemoteArtifact for 'pig.rpm' and its Remotes
"Pulp Content App" [#cyan]-> PostgreSQL : Query for RemoteArtifact for 'pig.rpm' and its Remotes
"Pulp Content App" <-[#cyan] PostgreSQL : RemoteArtifact for 'pig.rpm' and its Remotes Found

||45||

' Download Content From Remote
"Pulp Content App" [#green]-> "example.org" : GET /path/to/repo/pig.rpm
"Pulp Content App" <-[#green] "example.org" : 200 OK + binary data

||45||

' Save the Artifact for 'pig.rpm' and associate it with the RemoteArtifact
"Pulp Content App" [#cyan]-> PostgreSQL : Save the Artifact for 'pig.rpm' and associate it with the RemoteArtifact

'Return 404
Client <-[#red] "Pulp Content App" : 200 OK + binary data
deactivate "Pulp Content App"

== No PublishedArtifact, No PublishedMetadata, pass_through=False, policy='on_demand' ==


legend right
  (Green) -> Downloader configured from the Remote's settings
  (Cyan) -> Database calls
  (Red) -> HTTP(S) calls
endlegend
@enduml