Pluggable protection provider doc
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doc/source/api/pluggable_protection_provider.pu
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doc/source/api/pluggable_protection_provider.pu
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@startuml
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title Pluggable Protection Provider
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class ResourceType extends String {
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}
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class Resource {
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+type: ResourceType
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+id: UUID
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}
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class ResourceGraphNode {
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resource: Resource
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dependent_resources: []Resource
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}
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class ResourceGraphWalker {
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+constructor(root: ResourceGraphNode)
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+add_listener(listener: ResourceGraphWalkerListener)
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+walk()
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}
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ResourceGraphWalker -- ResourceGraphWalkerListener
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interface ResourceGraphWalkerListener {
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on_node_enter(node: ResourceGraphNode, is_first_visit: boolean)
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on_node_exit(node: ResourceGraphNode, is_first_visit: boolean)
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}
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ResourceGraphNode *- Resource
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class ProtectableRegistry {
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+ {static} fetch_dependant_resources(resource: Resource): []Resource
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+ {static} register(resource_type: ResourceType, protectable: Protectable)
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+ {static} list_resources(resource_type: ResourceType): [] Resource
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}
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ProtectableRegistry -- Resource: <<creates>>
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ProtectableRegistry "1" *- "*" Protectable
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interface Protectable {
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+ possible_parent_types: []ResourceType
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+ fetch_child_resources(resource: Resource): []Resource
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+ list_resources(resource_type: ResourceType): []Resource
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}
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Resource *- ResourceType
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class TaskFlow::Atom {
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}
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enum Operation {
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protect
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enable
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disable
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restore
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}
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class Context {
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+plan: ProtectionPlan
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+operation: Operation
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+parameters: dict
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+resource: ResourceGraphNode
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+account: MetadataStore
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+is_first_visit: boolean
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}
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Context -- Operation
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interface ProtectionPlugin {
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+get_pre_task(context: Context): TaskFlow::Atom?
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+get_post_task(context: Context): TaskFlow::Atom?
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}
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ProtectionPlugin -- Context
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ProtectionPlugin -- TaskFlow::Atom
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interface ProtectionProvider {
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create_checkpoint(root_resource: ResourceGraphNode): Checkpoint
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delete_checkpoint(checkpoint_id: UUID)
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}
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class PluggableProtectionProvider extends ProtectionProvider {
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-plugins: [ResourceType]ProtectionPlugin
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}
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PluggableProtectionProvider *-- "1..*" ProtectionPlugin: Uses for functionality
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PluggableProtectionProvider -> ResourceGraphWalker: uses it to iterate over graph
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ResourceGraphWalker - ResourceGraphNode
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interface ProtectionProvider {
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}
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@enduml
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31
doc/source/api/pluggable_protection_provider.rst
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doc/source/api/pluggable_protection_provider.rst
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Pluggable Protection Provider
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=============================
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The *Pluggable Protection Provider* will be the reference implementation
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protection provider. It's purpose is to be fully pluggable and extandable so
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that only extream use cases will need to implement their own Protection Provider
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from scratch.
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The protection provider will contain internally a map between any registered
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*Protectable* and a corrosponding *Protection Plugin*. When the pluggable
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protection provider is asked to perform an action, it will walk over the
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graph and pass a context object to the appropriate plugin whenever a node is
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encountered.
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The resource graph is traversed in with DFS. When a node is first encountered
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the protection manager gets the plugin for the appropriate resource type, builds
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a context and passes it to the plugins `get_pre_task()` method. The plugin can
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return any tasks that it wants added to the task list. When all of a node
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childrens have been visited the `get_pre_task()` is called. The task returned
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from this method will also be added to the task list but is also guranteed to
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execute after all the child node's tasks have finished. Any of the methods can
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return `None` if they don't want any action performed.
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After the entire grap has been traversed the Protection Provider will return
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the task lists which will be queued and than executed according to the
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executor's policy. When all the tasks are done the operation is considered
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complete.
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This scheme decouples the tree structure form the task execution. A plugin that
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handles multiple resources or that aggregates mutiple resources to one task can
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use this mechanism to only return tasks when appropriate for it's scheme.
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191
doc/source/api/pluggable_protection_provider.svg
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doc/source/api/pluggable_protection_provider.svg
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<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
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<defs>
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<filter height="300%" id="f1" width="300%" x="-1" y="-1">
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<feGaussianBlur result="blurOut" stdDeviation="2.0" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" text-decoration="underline" textLength="366" x="925.5" y="95.9683">register(resource_type: ResourceType, protectable: Protectable)</text>
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<line style="stroke: #000000; stroke-width: 1.0;" x1="925.5" x2="1291.5" y1="97.9683" y2="97.9683" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" text-decoration="underline" textLength="331" x="925.5" y="108.7729">list_resources(resource_type: ResourceType): [] Resource</text>
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<line style="stroke: #000000; stroke-width: 1.0;" x1="925.5" x2="1256.5" y1="110.7729" y2="110.7729" />
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<ellipse cx="1503.25" cy="44.9531" fill="#B4A7E5" rx="11" ry="11" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M1499.1719,40.7188 L1499.1719,38.5625 L1506.5625,38.5625 L1506.5625,40.7188 L1504.0938,40.7188 L1504.0938,48.7969 L1506.5625,48.7969 L1506.5625,50.9531 L1499.1719,50.9531 L1499.1719,48.7969 L1501.6406,48.7969 L1501.6406,40.7188 L1499.1719,40.7188 Z "
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<text fill="#000000" font-family="sans-serif" font-size="12" font-style="italic" lengthAdjust="spacingAndGlyphs" textLength="72" x="1523.75" y="49.1074">Protectable</text>
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="1368" x2="1719" y1="60.9531" y2="60.9531" />
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<ellipse cx="1378" cy="72.8555" fill="none" rx="3" ry="3" style="stroke: #038048; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="224" x="1387" y="75.1636">possible_parent_types: []ResourceType</text>
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="1368" x2="1719" y1="81.7578" y2="81.7578" />
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<ellipse cx="1378" cy="93.6602" fill="#84BE84" rx="3" ry="3" style="stroke: #038048; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="313" x="1387" y="95.9683">fetch_child_resources(resource: Resource): []Resource</text>
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<ellipse cx="1378" cy="106.4648" fill="#84BE84" rx="3" ry="3" style="stroke: #038048; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="327" x="1387" y="108.7729">list_resources(resource_type: ResourceType): []Resource</text>
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<rect fill="#FEFECE" filter="url(#f1)" height="48" style="stroke: #A80036; stroke-width: 1.5;" width="128" x="120.5" y="528.4531" />
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<ellipse cx="135.5" cy="544.4531" fill="#ADD1B2" rx="11" ry="11" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M138.4688,550.0938 Q137.8906,550.3906 137.25,550.5391 Q136.6094,550.6875 135.9063,550.6875 Q133.4063,550.6875 132.0859,549.0391 Q130.7656,547.3906 130.7656,544.2656 Q130.7656,541.1406 132.0859,539.4844 Q133.4063,537.8281 135.9063,537.8281 Q136.6094,537.8281 137.2578,537.9844 Q137.9063,538.1406 138.4688,538.4375 L138.4688,541.1563 Q137.8438,540.5781 137.25,540.3047 Q136.6563,540.0313 136.0313,540.0313 Q134.6875,540.0313 134,541.1016 Q133.3125,542.1719 133.3125,544.2656 Q133.3125,546.3594 134,547.4297 Q134.6875,548.5 136.0313,548.5 Q136.6563,548.5 137.25,548.2266 Q137.8438,547.9531 138.4688,547.375 L138.4688,550.0938 Z "
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/>
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<text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="96" x="149.5" y="548.6074">TaskFlow::Atom</text>
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="121.5" x2="247.5" y1="560.4531" y2="560.4531" />
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="121.5" x2="247.5" y1="568.4531" y2="568.4531" />
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<path d="M356.6094,697.9531 L348.8906,697.9531 L348.8906,685.5625 L356.6094,685.5625 L356.6094,687.7188 L351.3438,687.7188 L351.3438,690.3906 L356.1094,690.3906 L356.1094,692.5469 L351.3438,692.5469 L351.3438,695.7969 L356.6094,695.7969 L356.6094,697.9531 Z "
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/>
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<text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="62" x="366.5" y="696.1074">Operation</text>
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="338.5" x2="430.5" y1="707.9531" y2="707.9531" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="40" x="343.5" y="722.1636">protect</text>
|
||||
<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="38" x="343.5" y="734.9683">enable</text>
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="41" x="343.5" y="747.7729">disable</text>
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="42" x="343.5" y="760.5776">restore</text>
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="338.5" x2="430.5" y1="767.1719" y2="767.1719" />
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<rect fill="#FEFECE" filter="url(#f1)" height="124.8281" style="stroke: #A80036; stroke-width: 1.5;" width="202" x="283.5" y="489.9531" />
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<ellipse cx="356.25" cy="505.9531" fill="#ADD1B2" rx="11" ry="11" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M359.2188,511.5938 Q358.6406,511.8906 358,512.0391 Q357.3594,512.1875 356.6563,512.1875 Q354.1563,512.1875 352.8359,510.5391 Q351.5156,508.8906 351.5156,505.7656 Q351.5156,502.6406 352.8359,500.9844 Q354.1563,499.3281 356.6563,499.3281 Q357.3594,499.3281 358.0078,499.4844 Q358.6563,499.6406 359.2188,499.9375 L359.2188,502.6563 Q358.5938,502.0781 358,501.8047 Q357.4063,501.5313 356.7813,501.5313 Q355.4375,501.5313 354.75,502.6016 Q354.0625,503.6719 354.0625,505.7656 Q354.0625,507.8594 354.75,508.9297 Q355.4375,510 356.7813,510 Q357.4063,510 358,509.7266 Q358.5938,509.4531 359.2188,508.875 L359.2188,511.5938 Z "
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/>
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<text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="48" x="376.75" y="510.1074">Context</text>
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="284.5" x2="484.5" y1="521.9531" y2="521.9531" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="113" x="303.5" y="536.1636">plan: ProtectionPlan</text>
|
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<ellipse cx="294.5" cy="546.6602" fill="none" rx="3" ry="3" style="stroke: #038048; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="118" x="303.5" y="548.9683">operation: Operation</text>
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<ellipse cx="294.5" cy="559.4648" fill="none" rx="3" ry="3" style="stroke: #038048; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="95" x="303.5" y="561.7729">parameters: dict</text>
|
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<ellipse cx="294.5" cy="572.2695" fill="none" rx="3" ry="3" style="stroke: #038048; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="176" x="303.5" y="574.5776">resource: ResourceGraphNode</text>
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<ellipse cx="294.5" cy="585.0742" fill="none" rx="3" ry="3" style="stroke: #038048; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="135" x="303.5" y="587.3823">account: MetadataStore</text>
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<ellipse cx="294.5" cy="597.8789" fill="none" rx="3" ry="3" style="stroke: #038048; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="121" x="303.5" y="600.187">is_first_visit: boolean</text>
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="284.5" x2="484.5" y1="606.7813" y2="606.7813" />
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<ellipse cx="149.75" cy="370.9531" fill="#B4A7E5" rx="11" ry="11" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M145.6719,366.7188 L145.6719,364.5625 L153.0625,364.5625 L153.0625,366.7188 L150.5938,366.7188 L150.5938,374.7969 L153.0625,374.7969 L153.0625,376.9531 L145.6719,376.9531 L145.6719,374.7969 L148.1406,374.7969 L148.1406,366.7188 L145.6719,366.7188 Z "
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/>
|
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<text fill="#000000" font-family="sans-serif" font-size="12" font-style="italic" lengthAdjust="spacingAndGlyphs" textLength="101" x="170.25" y="375.1074">ProtectionPlugin</text>
|
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="51.5" x2="357.5" y1="386.9531" y2="386.9531" />
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="51.5" x2="357.5" y1="394.9531" y2="394.9531" />
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<ellipse cx="61.5" cy="406.8555" fill="#84BE84" rx="3" ry="3" style="stroke: #038048; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="276" x="70.5" y="409.1636">get_pre_task(context: Context): TaskFlow::Atom?</text>
|
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<ellipse cx="61.5" cy="419.6602" fill="#84BE84" rx="3" ry="3" style="stroke: #038048; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="282" x="70.5" y="421.9683">get_post_task(context: Context): TaskFlow::Atom?</text>
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<rect fill="#FEFECE" filter="url(#f1)" height="73.6094" style="stroke: #A80036; stroke-width: 1.5;" width="397" x="6" y="34.9531" />
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<ellipse cx="143.25" cy="50.9531" fill="#B4A7E5" rx="11" ry="11" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M139.1719,46.7188 L139.1719,44.5625 L146.5625,44.5625 L146.5625,46.7188 L144.0938,46.7188 L144.0938,54.7969 L146.5625,54.7969 L146.5625,56.9531 L139.1719,56.9531 L139.1719,54.7969 L141.6406,54.7969 L141.6406,46.7188 L139.1719,46.7188 Z "
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/>
|
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<text fill="#000000" font-family="sans-serif" font-size="12" font-style="italic" lengthAdjust="spacingAndGlyphs" textLength="114" x="163.75" y="55.1074">ProtectionProvider</text>
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="7" x2="402" y1="66.9531" y2="66.9531" />
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="7" x2="402" y1="74.9531" y2="74.9531" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="385" x="12" y="89.1636">create_checkpoint(root_resource: ResourceGraphNode): Checkpoint</text>
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="220" x="12" y="101.9683">delete_checkpoint(checkpoint_id: UUID)</text>
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<rect fill="#FEFECE" filter="url(#f1)" height="60.8047" style="stroke: #A80036; stroke-width: 1.5;" width="254" x="77.5" y="204.4531" />
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<ellipse cx="112.3" cy="220.4531" fill="#ADD1B2" rx="11" ry="11" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M115.2688,226.0938 Q114.6906,226.3906 114.05,226.5391 Q113.4094,226.6875 112.7063,226.6875 Q110.2063,226.6875 108.8859,225.0391 Q107.5656,223.3906 107.5656,220.2656 Q107.5656,217.1406 108.8859,215.4844 Q110.2063,213.8281 112.7063,213.8281 Q113.4094,213.8281 114.0578,213.9844 Q114.7063,214.1406 115.2688,214.4375 L115.2688,217.1563 Q114.6438,216.5781 114.05,216.3047 Q113.4563,216.0313 112.8313,216.0313 Q111.4875,216.0313 110.8,217.1016 Q110.1125,218.1719 110.1125,220.2656 Q110.1125,222.3594 110.8,223.4297 Q111.4875,224.5 112.8313,224.5 Q113.4563,224.5 114.05,224.2266 Q114.6438,223.9531 115.2688,223.375 L115.2688,226.0938 Z "
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<text fill="#000000" font-family="sans-serif" font-size="12" lengthAdjust="spacingAndGlyphs" textLength="178" x="130.7" y="224.6074">PluggableProtectionProvider</text>
|
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="78.5" x2="330.5" y1="236.4531" y2="236.4531" />
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<rect fill="none" height="6" style="stroke: #C82930; stroke-width: 1.0;" width="6" x="85.5" y="245.3555" />
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<text fill="#000000" font-family="sans-serif" font-size="11" lengthAdjust="spacingAndGlyphs" textLength="228" x="97.5" y="250.6636">plugins: [ResourceType]ProtectionPlugin</text>
|
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<line style="stroke: #A80036; stroke-width: 1.5;" x1="78.5" x2="330.5" y1="257.2578" y2="257.2578" />
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<path d="M1746.09,108.6681 C1743.21,110.8321 1740.33,112.9451 1737.5,114.9531 C1686.97,150.8101 1625.67,187.7361 1586.15,210.7521 " fill="none" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M709.5,278.3071 C709.5,302.2401 709.5,331.8451 709.5,354.6981 " fill="none" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M1160.36,234.9531 C1179.01,234.9531 1197.66,234.9531 1216.31,234.9531 " fill="none" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M1149.84,115.2541 C1179.23,140.9681 1216.36,173.4521 1244.34,197.9341 " fill="none" style="stroke: #A80036; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="92" x="1199.5" y="158.02"><<creates>></text>
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<path d="M1311.12,71.9531 C1329.74,71.9531 1348.35,71.9531 1366.97,71.9531 " fill="none" style="stroke: #A80036; stroke-width: 1.0;" />
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<polygon fill="#A80036" points="1297.9,71.9531,1303.9,75.9531,1309.9,71.9531,1303.9,67.9531,1297.9,71.9531" style="stroke: #A80036; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="8" x="1305.7281" y="68.7216">1</text>
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||||
<text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="7" x="1351.8124" y="68.6738">*</text>
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<path d="M1367.6,234.9531 C1406.89,234.9531 1446.17,234.9531 1485.46,234.9531 " fill="none" style="stroke: #A80036; stroke-width: 1.0;" />
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<polygon fill="#A80036" points="1354.56,234.9531,1360.56,238.9531,1366.56,234.9531,1360.56,230.9531,1354.56,234.9531" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M384.5,615.1881 C384.5,635.1821 384.5,657.0601 384.5,675.9516 " fill="none" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M245.796,429.3161 C266.139,447.2301 291.234,469.3271 314.46,489.7791 " fill="none" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M199.912,429.3161 C196.083,459.6591 190.739,502.0061 187.455,528.0311 " fill="none" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M204.5,129.2711 C204.5,154.5851 204.5,183.4151 204.5,204.4011 " fill="none" style="stroke: #A80036; stroke-width: 1.0;" />
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<polygon fill="none" points="197.5,129.0851,204.5,109.0851,211.5,129.0851,197.5,129.0851" style="stroke: #A80036; stroke-width: 1.0;" />
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<path d="M204.5,278.7881 C204.5,302.6441 204.5,332.0191 204.5,354.7231 " fill="none" style="stroke: #A80036; stroke-width: 1.0;" />
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<polygon fill="#A80036" points="204.5,265.4721,200.5,271.4721,204.5,277.4721,208.5,271.4721,204.5,265.4721" style="stroke: #A80036; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="134" x="205.5" y="321.02">Uses for functionality</text>
|
||||
<text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="23" x="179.4516" y="343.8691">1..*</text>
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||||
<path d="M331.607,234.9531 C395.109,234.9531 472.792,234.9531 541.174,234.9531 " fill="none" style="stroke: #A80036; stroke-width: 1.0;" />
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<polygon fill="#A80036" points="546.499,234.9531,537.499,230.9531,541.499,234.9531,537.499,238.9531,546.499,234.9531" style="stroke: #A80036; stroke-width: 1.0;" />
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<text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="178" x="350" y="228.02">uses it to iterate over graph</text>
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<path d="M872.747,234.9531 C895.782,234.9531 918.816,234.9531 941.851,234.9531 " fill="none" style="stroke: #A80036; stroke-width: 1.0;" />
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</g>
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||||
</svg>
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After Width: | Height: | Size: 30 KiB |
Loading…
Reference in New Issue
Block a user