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pulumi/developer-docs/architecture/replace.svg
Pat Gavlin 98f73cf1ed
Start in on developer documentation. (#7839) 
Developer documentation is written in Markdown and can be built into
HTML, PDF, etc. using Sphinx. Diagrams are written in PlantUML and
rendered as SVGs. All developer docs live in the `developer-docs` folder
under the root of the repository.
2021-08-25 15:18:13 -07:00

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y2="480.791"/><line style="stroke:#A80036;stroke-width:1.0;" x1="820" x2="820" y1="480.791" y2="493.791"/><line style="stroke:#A80036;stroke-width:1.0;" x1="779" x2="820" y1="493.791" y2="493.791"/><polygon fill="#A80036" points="789,489.791,779,493.791,789,497.791,785,493.791" style="stroke:#A80036;stroke-width:1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacing" textLength="135" x="785" y="476.0488">Generate delete steps</text><polygon fill="#A80036" points="1027,519.1016,1037,523.1016,1027,527.1016,1031,523.1016" style="stroke:#A80036;stroke-width:1.0;"/><line style="stroke:#A80036;stroke-width:1.0;" x1="778" x2="1033" y1="523.1016" y2="523.1016"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacing" textLength="130" x="785" y="518.3594">DeleteStep(old state)</text><polygon fill="#A80036" points="1295,548.4121,1305,552.4121,1295,556.4121,1299,552.4121" style="stroke:#A80036;stroke-width:1.0;"/><line 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@startuml
participant "Language SDK" order 10
box "Engine"
participant "Resource Monitor" order 15
participant "Step Generator" order 20
participant "Step Executor" order 25
end box
participant "Resource Provider" order 30
"Language SDK" -> "Resource Monitor" ++ : RegisterResourceRequest(type, name, inputs, options)
"Resource Monitor" -> "Step Generator" ++ : RegisterResourceEvent(type, name, inputs, options)
"Step Generator" -> "Resource Provider" ++ : CheckRequest(type, inputs, old inputs)
"Step Generator" <- "Resource Provider" - - : CheckResponse(inputs', failures)
"Step Generator" -> "Resource Provider" ++ : DiffRequest(type, inputs', old state, options)
"Step Generator" <- "Resource Provider" - - : DiffResponse(diffs)
"Step Generator" -> "Step Executor" - -++ : CreateStep(inputs', old state, options)
note left
This is fire-and-forget on the part of the step generator.
The step will run in parallel with steps for other resources.
end note
"Step Executor" -> "Resource Provider" ++ : CreateRequest(type, inputs', old state)
"Step Executor" <- "Resource Provider" - - : CreateResponse(new state)
"Resource Monitor" <- "Step Executor" - - : done(new state)
"Language SDK" <- "Resource Monitor" - - : RegisterResourceResponse(urn, ID, new state)
...Pulumi program exits...
"Step Generator" -> "Step Generator": Generate delete steps
"Step Generator" -> "Step Executor" ++ : DeleteStep(old state)
"Step Executor" -> "Resource Provider" ++ : DeleteRequest(type, old state)
"Step Executor" <- "Resource Provider" - - : DeleteResponse()
@enduml
PlantUML version 1.2021.9(Sun Jul 25 03:13:56 PDT 2021)
(GPL source distribution)
Java Runtime: OpenJDK Runtime Environment
JVM: OpenJDK 64-Bit Server VM
Default Encoding: UTF-8
Language: en
Country: US
--></g></svg>
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