docs: convert standard diagrams from draw.io PNGs to inline Mermaid

Gitea renders mermaid inline, so the flow/state/hierarchy/DAG diagrams
move to text-in-markdown: auto-layout (removes the manual overlap-prone
draw.io step), diffable source, no committed binaries, and a dark-text
theme so labels stay legible. Keep draw.io PNGs only for the two complex
bespoke diagrams (logical architecture, env2 topology) where pixel
control still wins. All 24 mermaid blocks validated by rendering.
This commit is contained in:
Joseph Doherty
2026-06-01 00:23:00 -04:00
parent e3ca5ac0cf
commit 43228185b4
65 changed files with 848 additions and 2145 deletions
+49 -2
View File
@@ -167,8 +167,55 @@ Keepalive settings are configurable via `CommunicationOptions`:
## Topology
![communication-topology](diagrams/communication-topology.png)
<!-- source: diagrams/communication-topology.drawio — edit, then re-export with export-drawio.sh -->
```mermaid
%%{init: {'theme':'base', 'themeVariables': {'textColor':'#111111','lineColor':'#555555','edgeLabelBackground':'#ffffff','fontSize':'15px'}}}%%
flowchart LR
subgraph Central["Central Cluster"]
CCA["ClusterClient<br/>(command/control)"]
CCB["ClusterClient<br/>(command/control)"]
CCN["ClusterClient<br/>(command/control)"]
GRPCC["SiteStreamGrpcClient<br/>(real-time data)"]
end
subgraph SiteA["Site A Cluster"]
SACOMM["SiteCommunicationActor<br/>(via Receptionist)"]
SAGRPC["SiteStreamGrpcServer<br/>(Kestrel HTTP/2, port 8083)"]
SACC["ClusterClient to Central<br/>(CentralCommunicationActor)"]
end
subgraph SiteB["Site B Cluster"]
SBCOMM["SiteCommunicationActor<br/>(via Receptionist)"]
SBGRPC["SiteStreamGrpcServer"]
end
subgraph SiteN["Site N Cluster"]
SNCOMM["SiteCommunicationActor<br/>(via Receptionist)"]
SNGRPC["SiteStreamGrpcServer"]
end
CCA -->|command/control| SACOMM
CCB -->|command/control| SBCOMM
CCN -->|command/control| SNCOMM
SAGRPC -->|"gRPC stream (real-time data)"| GRPCC
SBGRPC -->|gRPC stream| GRPCC
SNGRPC -->|gRPC stream| GRPCC
SACC -.->|command/control| Central
NOTE["Sites do NOT communicate with each other.<br/>All inter-cluster communication flows through Central."]
classDef start fill:#d5e8d4,stroke:#82b366,color:#111111;
classDef proc fill:#dae8fc,stroke:#6c8ebf,color:#111111;
classDef dec fill:#fff2cc,stroke:#d6b656,color:#111111;
classDef alt fill:#e1d5e7,stroke:#9673a6,color:#111111;
classDef muted fill:#f5f5f5,stroke:#999999,color:#666666;
class CCA,CCB,CCN,SACOMM,SACC,SBCOMM,SNCOMM dec
class GRPCC,SAGRPC,SBGRPC,SNGRPC start
class NOTE muted
class Central proc
class SiteA,SiteB,SiteN alt
```
- Sites do **not** communicate with each other.
- All inter-cluster communication flows through central.
@@ -143,8 +143,33 @@ EF Core's DbContext naturally provides unit-of-work semantics:
### Example Transactional Flow
![configdb-transactional-flow](diagrams/configdb-transactional-flow.png)
<!-- source: diagrams/configdb-transactional-flow.drawio — edit, then re-export with export-drawio.sh -->
```mermaid
%%{init: {'theme':'base', 'themeVariables': {'textColor':'#111111','lineColor':'#555555','edgeLabelBackground':'#ffffff','fontSize':'15px'}}}%%
flowchart TD
start(["Template Engine: Create Template"])
add1["repository.AddTemplate(template)<br/>// template is a Commons POCO"]
add2["repository.AddAttributes(attributes)<br/>// attributes are Commons POCOs"]
add3["repository.AddAlarms(alarms)<br/>// alarms are Commons POCOs"]
add4["repository.AddScripts(scripts)<br/>// scripts are Commons POCOs"]
save["repository.SaveChangesAsync()<br/>// single transaction commits all"]
db[("Configuration DB<br/>(MS SQL)")]
start --> add1
add1 --> add2
add2 --> add3
add3 --> add4
add4 --> save
save -. "single transaction" .-> db
classDef start fill:#d5e8d4,stroke:#82b366,color:#111111;
classDef proc fill:#dae8fc,stroke:#6c8ebf,color:#111111;
classDef dec fill:#fff2cc,stroke:#d6b656,color:#111111;
classDef muted fill:#f5f5f5,stroke:#999999,color:#666666;
class start start
class add1,add2,add3,add4 proc
class save dec
class db muted
```
---
@@ -177,8 +202,31 @@ Audit entries are written **synchronously** within the same database transaction
### Integration Example
![configdb-integration-example](diagrams/configdb-integration-example.png)
<!-- source: diagrams/configdb-integration-example.drawio — edit, then re-export with export-drawio.sh -->
```mermaid
%%{init: {'theme':'base', 'themeVariables': {'textColor':'#111111','lineColor':'#555555','edgeLabelBackground':'#ffffff','fontSize':'15px'}}}%%
flowchart TD
start(["Template Engine: Update Template"])
upd["repository.UpdateTemplate(template)"]
audit["auditService.LogAsync(user, &quot;Update&quot;, &quot;Template&quot;,<br/>template.Id, template.Name, template)"]
save["repository.SaveChangesAsync()"]
note["both the change and audit entry<br/>commit together"]
start --> upd
upd --> audit
audit --> save
save -.- note
classDef start fill:#d5e8d4,stroke:#82b366,color:#111111;
classDef proc fill:#dae8fc,stroke:#6c8ebf,color:#111111;
classDef dec fill:#fff2cc,stroke:#d6b656,color:#111111;
classDef warn fill:#ffe6cc,stroke:#d79b00,color:#111111;
classDef alt fill:#e1d5e7,stroke:#9673a6,color:#111111;
class start start
class upd proc
class audit alt
class save dec
class note warn
```
### Audit Entry Schema
@@ -80,8 +80,39 @@ Data connections support an optional backup endpoint for automatic failover when
**Failover state machine:**
![dcl-endpoint-redundancy](diagrams/dcl-endpoint-redundancy.png)
<!-- source: diagrams/dcl-endpoint-redundancy.drawio — edit, then re-export with export-drawio.sh -->
```mermaid
%%{init: {'theme':'base', 'themeVariables': {'textColor':'#111111','lineColor':'#555555','edgeLabelBackground':'#ffffff','fontSize':'15px'}}}%%
flowchart TD
connected(["Connected"])
pushbad["push bad quality"]
retry["retry active endpoint<br/>(5s)"]
decide{"N failures<br/>(≥ FailoverRetryCount)?"}
switch["switch to other endpoint"]
dispose["dispose adapter,<br/>create fresh adapter<br/>with other config"]
reconnect["reconnect"]
resub["ReSubscribeAll"]
connected -->|disconnect| pushbad
pushbad --> retry
retry --> decide
decide -->|"no (retry again)"| retry
decide -->|yes| switch
switch --> dispose
dispose --> reconnect
reconnect --> resub
resub -->|back to Connected| connected
classDef start fill:#d5e8d4,stroke:#82b366,color:#111111;
classDef proc fill:#dae8fc,stroke:#6c8ebf,color:#111111;
classDef dec fill:#fff2cc,stroke:#d6b656,color:#111111;
classDef warn fill:#ffe6cc,stroke:#d79b00,color:#111111;
classDef bad fill:#f8cecc,stroke:#b85450,color:#111111;
class connected start
class pushbad bad
class retry,reconnect,resub proc
class decide dec
class switch,dispose warn
```
- **Round-robin**: primary → backup → primary → backup. No preferred endpoint after first failover — the connection stays on whichever endpoint is working.
- **No auto-failback**: The connection remains on the active endpoint until it fails.
@@ -22,8 +22,47 @@ Central cluster only. The site-side deployment responsibilities (receiving confi
## Deployment Flow
![deployment-flow](diagrams/deployment-flow.png)
<!-- source: diagrams/deployment-flow.drawio — edit, then re-export with export-drawio.sh -->
```mermaid
%%{init: {'theme':'base', 'themeVariables': {'textColor':'#111111','lineColor':'#555555','edgeLabelBackground':'#ffffff','fontSize':'15px'}}}%%
flowchart TD
engineer(["Engineer (UI)"])
subgraph DMC["Deployment Manager (Central)"]
step1["1. Request validated and flattened config from Template Engine<br/>(validation: flattening, script compilation, trigger references,<br/>connection binding completeness)"]
step2{"2. Validation fails?"}
step2fail(["Return errors to UI, stop"])
step3["3. Send config to site via Communication Layer"]
step8[("8. Update deployment status in config DB")]
end
subgraph SR["Site Runtime (Deployment Manager Singleton)"]
step4[("4. Store new flattened config locally (SQLite)")]
step5["5. Compile scripts at site"]
step6["6. Create/update Instance Actor<br/>(with child Script + Alarm Actors)"]
step7["7. Report success/failure back to central"]
end
engineer --> step1
step1 --> step2
step2 -->|yes| step2fail
step2 -->|no| step3
step3 -->|config| step4
step4 --> step5
step5 --> step6
step6 --> step7
step7 -. "report success/failure" .-> step8
classDef start fill:#d5e8d4,stroke:#82b366,color:#111111;
classDef proc fill:#dae8fc,stroke:#6c8ebf,color:#111111;
classDef dec fill:#fff2cc,stroke:#d6b656,color:#111111;
classDef bad fill:#f8cecc,stroke:#b85450,color:#111111;
class engineer start
class step1,step5,step6,step7 dec
class step2,step2fail bad
class step3 dec
class step8 proc
class step4 start
```
## Deployment Identity & Idempotency
+35 -2
View File
@@ -123,8 +123,41 @@ API method scripts are compiled at central startup — all method definitions ar
## Request Flow
![inboundapi-request-flow](diagrams/inboundapi-request-flow.png)
<!-- source: diagrams/inboundapi-request-flow.drawio — edit, then re-export with export-drawio.sh -->
```mermaid
%%{init: {'theme':'base', 'themeVariables': {'textColor':'#111111','lineColor':'#555555','edgeLabelBackground':'#ffffff','fontSize':'15px'}}}%%
flowchart TD
ext(["External System"])
api["Inbound API (Central)"]
s1["1. Extract API key from request"]
s2["2. Validate key exists and is enabled"]
s3["3. Resolve method by name"]
s4["4. Check API key is in method's approved list"]
s5["5. Validate and deserialize parameters"]
s6["6. Execute implementation script<br/>(subject to method timeout)"]
s7["7. Serialize return value"]
s8["8. Return response"]
ext --> api
api --> s1
s1 --> s2
s2 --> s3
s3 --> s4
s4 --> s5
s5 --> s6
s6 --> s7
s7 --> s8
classDef start fill:#d5e8d4,stroke:#82b366,color:#111111;
classDef proc fill:#dae8fc,stroke:#6c8ebf,color:#111111;
classDef dec fill:#fff2cc,stroke:#d6b656,color:#111111;
classDef warn fill:#ffe6cc,stroke:#d79b00,color:#111111;
classDef alt fill:#e1d5e7,stroke:#9673a6,color:#111111;
class ext start
class api proc
class s1,s2,s3,s4,s5,s7 dec
class s6 alt
class s8 warn
```
## Implementation Script Capabilities
@@ -24,8 +24,40 @@ SMTP and HTTP delivery is blocking I/O. Delivery work runs on a **dedicated bloc
## End-to-End Flow
![notificationoutbox-flow](diagrams/notificationoutbox-flow.png)
<!-- source: diagrams/notificationoutbox-flow.drawio — edit, then re-export with export-drawio.sh -->
```mermaid
%%{init: {'theme':'base', 'themeVariables': {'textColor':'#111111','lineColor':'#555555','edgeLabelBackground':'#ffffff','fontSize':'15px'}}}%%
flowchart TD
SCRIPT(["Site script: Notify.To('list').Send(subject, body)<br/>generate NotificationId (GUID) locally;<br/>return it to the script immediately"])
SNF["Site Store-and-Forward Engine<br/>(notification category, target = central)<br/>durably forwards to central via Central-Site Communication<br/>(ClusterClient); buffers/retries if central is unreachable"]
INGEST[("Central ingest: insert-if-not-exists on NotificationId<br/>to Notifications table (Pending)<br/>ack the site, site S and F clears the message")]
OUTBOX["Central Notification Outbox actor<br/>(singleton, active central node)<br/>polls due rows; resolves the list;<br/>delivers via the matching adapter"]
D1{Delivery outcome}
DELIVERED(["Delivered"])
RETRYING["Retrying<br/>(schedule NextAttemptAt)"]
PARKED(["Parked"])
SCRIPT --> SNF
SNF --> INGEST
INGEST --> OUTBOX
OUTBOX --> D1
D1 -->|success| DELIVERED
D1 -->|transient failure| RETRYING
D1 -->|"permanent failure /<br/>retries exhausted"| PARKED
RETRYING -.->|retry due| OUTBOX
classDef start fill:#d5e8d4,stroke:#82b366,color:#111111;
classDef proc fill:#dae8fc,stroke:#6c8ebf,color:#111111;
classDef dec fill:#fff2cc,stroke:#d6b656,color:#111111;
classDef warn fill:#ffe6cc,stroke:#d79b00,color:#111111;
classDef bad fill:#f8cecc,stroke:#b85450,color:#111111;
classDef alt fill:#e1d5e7,stroke:#9673a6,color:#111111;
class SCRIPT,DELIVERED start
class SNF warn
class INGEST proc
class OUTBOX alt
class D1,RETRYING dec
class PARKED bad
```
The site forwards only `(listName, subject, body)` plus provenance — recipient resolution happens at central, at delivery time. This keeps notification-list definitions in one place and removes the deploy-to-sites artifact entirely.
+51 -2
View File
@@ -27,8 +27,57 @@ Site clusters only.
## Actor Hierarchy
![siteruntime-actor-hierarchy](diagrams/siteruntime-actor-hierarchy.png)
<!-- source: diagrams/siteruntime-actor-hierarchy.drawio — edit, then re-export with export-drawio.sh -->
```mermaid
%%{init: {'theme':'base', 'themeVariables': {'textColor':'#111111','lineColor':'#555555','edgeLabelBackground':'#ffffff','fontSize':'15px'}}}%%
flowchart TD
DMS["Deployment Manager Singleton<br/>(Cluster Singleton)"]
IA1["Instance Actor<br/>('MachineA-001')"]
IA2["Instance Actor<br/>('MachineA-002')"]
IAMORE["… more Instance Actors"]
SA1["Script Actor ('MonitorSpeed')<br/>— coordinator"]
SA2["Script Actor ('CalculateOEE')<br/>— coordinator"]
AA1["Alarm Actor ('OverTemp')<br/>— coordinator (computed)"]
AA2["Alarm Actor ('LowPressure')<br/>— coordinator (computed)"]
NAA1["Native Alarm Actor ('OpcUaServer1')<br/>— read-only mirror, peer to Alarm Actor"]
SEA1["Script Execution Actor<br/>— short-lived, per invocation"]
SEA2["Script Execution Actor<br/>— short-lived, per invocation"]
AEA1["Alarm Execution Actor<br/>— short-lived, per on-trigger invocation"]
IA2CHILD["… (Script / Alarm Actors)"]
DMS --> IA1
DMS --> IA2
DMS -.-> IAMORE
IA1 --> SA1
IA1 --> SA2
IA1 --> AA1
IA1 --> AA2
IA1 --> NAA1
SA1 --> SEA1
SA2 --> SEA2
AA1 --> AEA1
IA2 -.-> IA2CHILD
classDef start fill:#d5e8d4,stroke:#82b366,color:#111111;
classDef proc fill:#dae8fc,stroke:#6c8ebf,color:#111111;
classDef dec fill:#fff2cc,stroke:#d6b656,color:#111111;
classDef warn fill:#ffe6cc,stroke:#d79b00,color:#111111;
classDef bad fill:#f8cecc,stroke:#b85450,color:#111111;
classDef alt fill:#e1d5e7,stroke:#9673a6,color:#111111;
classDef muted fill:#f5f5f5,stroke:#999999,color:#666666;
class DMS proc
class IA1,IA2 start
class SA1,SA2 dec
class AA1,AA2 bad
class NAA1 alt
class SEA1,SEA2,AEA1 warn
class IAMORE,IA2CHILD muted
```
---
+101 -6
View File
@@ -92,8 +92,32 @@ The manifest is plaintext so the import wizard can preview bundle contents and s
## Architecture
![transport-architecture](diagrams/transport-architecture.png)
<!-- source: diagrams/transport-architecture.drawio — edit, then re-export with export-drawio.sh -->
```mermaid
%%{init: {'theme':'base', 'themeVariables': {'textColor':'#111111','lineColor':'#555555','edgeLabelBackground':'#ffffff','fontSize':'15px'}}}%%
flowchart TD
subgraph T["ZB.MOM.WW.ScadaBridge.Transport"]
EXPORTER["IBundleExporter<br/>ExportAsync(ExportSelection, Passphrase?, ct) → Stream"]
IMPORTER["IBundleImporter<br/>LoadAsync(stream, Passphrase?, ct) → BundleSession<br/>PreviewAsync(sessionId, ct) → ImportPreview<br/>ApplyAsync(sessionId, resolutions, ct) → ImportResult"]
RESOLVER["DependencyResolver"]
SERIALIZER["BundleSerializer<br/>(manifest + content JSON; ZIP packer)"]
ENCRYPTOR["BundleSecretEncryptor<br/>(AES-256-GCM + PBKDF2)"]
SESSIONSTORE["BundleSessionStore<br/>(in-memory, TTL'd)"]
MANIFESTVALIDATOR["ManifestValidator<br/>(schema/version gating, hash check)"]
end
classDef start fill:#d5e8d4,stroke:#82b366,color:#111111;
classDef proc fill:#dae8fc,stroke:#6c8ebf,color:#111111;
classDef dec fill:#fff2cc,stroke:#d6b656,color:#111111;
classDef warn fill:#ffe6cc,stroke:#d79b00,color:#111111;
classDef alt fill:#e1d5e7,stroke:#9673a6,color:#111111;
classDef muted fill:#f5f5f5,stroke:#999999,color:#666666;
class EXPORTER,IMPORTER proc
class RESOLVER,SERIALIZER start
class ENCRYPTOR alt
class SESSIONSTORE warn
class MANIFESTVALIDATOR dec
class T muted
```
The component is central-only. It is registered in `ZB.MOM.WW.ScadaBridge.Host` for central roles only, never for site roles. All persistence flows through existing audited repository interfaces in `ZB.MOM.WW.ScadaBridge.ConfigurationDatabase` — the component does not call `DbContext.SaveChangesAsync` directly. `BundleSessionStore` is in-process on the active central node (matching Blazor Server circuit affinity): 30-minute TTL, eviction on expiry, 3-strike passphrase lockout per session.
@@ -120,8 +144,50 @@ The user can toggle "include all dependencies" off (with a warning that the bund
### Backend
![transport-export-flow](diagrams/transport-export-flow.png)
<!-- source: diagrams/transport-export-flow.drawio — edit, then re-export with export-drawio.sh -->
```mermaid
%%{init: {'theme':'base', 'themeVariables': {'textColor':'#111111','lineColor':'#555555','edgeLabelBackground':'#ffffff','fontSize':'15px'}}}%%
flowchart TD
USER(["User (Design role)"])
WIZARD["Central UI Export wizard"]
EXPORTER["IBundleExporter"]
RESOLVER["DependencyResolver"]
REPOS[("repositories (read)")]
SERIALIZER["EntitySerializer"]
CONTENTJSON["content.json"]
ENCRYPTOR["BundleSecretEncryptor"]
CONTENTENC["content.enc<br/>(if passphrase)"]
MANIFESTBUILDER["ManifestBuilder"]
MANIFESTJSON["manifest.json"]
ZIP["ZIP packer → temp file → browser download"]
AUDIT["IAuditService.LogAsync(BundleExported …)"]
USER --> WIZARD
WIZARD --> EXPORTER
EXPORTER --> RESOLVER
RESOLVER --> SERIALIZER
SERIALIZER --> ENCRYPTOR
ENCRYPTOR --> MANIFESTBUILDER
MANIFESTBUILDER --> ZIP
ZIP --> AUDIT
RESOLVER --> REPOS
SERIALIZER --> CONTENTJSON
ENCRYPTOR --> CONTENTENC
MANIFESTBUILDER --> MANIFESTJSON
classDef start fill:#d5e8d4,stroke:#82b366,color:#111111;
classDef proc fill:#dae8fc,stroke:#6c8ebf,color:#111111;
classDef dec fill:#fff2cc,stroke:#d6b656,color:#111111;
classDef warn fill:#ffe6cc,stroke:#d79b00,color:#111111;
classDef alt fill:#e1d5e7,stroke:#9673a6,color:#111111;
classDef muted fill:#f5f5f5,stroke:#999999,color:#666666;
class USER,AUDIT start
class WIZARD,EXPORTER,ZIP proc
class RESOLVER,SERIALIZER,MANIFESTBUILDER dec
class ENCRYPTOR alt
class CONTENTJSON,CONTENTENC,MANIFESTJSON warn
class REPOS muted
```
Audit event: `BundleExported` — caller, artifact count, content hash, encrypted yes/no, bundle filename.
@@ -153,8 +219,37 @@ Bundle references that cannot be satisfied in either the bundle or the target DB
### Backend
![transport-import-flow](diagrams/transport-import-flow.png)
<!-- source: diagrams/transport-import-flow.drawio — edit, then re-export with export-drawio.sh -->
```mermaid
%%{init: {'theme':'base', 'themeVariables': {'textColor':'#111111','lineColor':'#555555','edgeLabelBackground':'#ffffff','fontSize':'15px'}}}%%
flowchart TD
USER(["User (Admin role) → uploads bundle"])
LOAD["IBundleImporter.LoadAsync<br/>· verify SHA-256 (manifest vs content)<br/>· check bundleFormatVersion supported<br/>· decrypt content.enc with passphrase (if encrypted)<br/>· deserialize entities<br/>· open BundleSession (30-min TTL)"]
PREVIEW["PreviewAsync → diff vs target DB → ImportPreview"]
REVIEW["(user reviews + resolves conflicts)"]
APPLY["ApplyAsync (single EF transaction)<br/>· run two-tier semantic validation<br/>&nbsp;&nbsp;(minimal name scan + full SemanticValidator)<br/>· apply resolutions (add / overwrite / skip / rename)<br/>· upsert TemplateFolder hierarchy<br/>· IAuditService.LogAsync(BundleImported …)<br/>· commit"]
RESULT["ImportResult → UI step 5"]
DEPLOYMENTS["'View on Deployments →' (existing page)"]
USER --> LOAD
LOAD --> PREVIEW
PREVIEW --> APPLY
PREVIEW -.- REVIEW
APPLY --> RESULT
RESULT --> DEPLOYMENTS
classDef start fill:#d5e8d4,stroke:#82b366,color:#111111;
classDef proc fill:#dae8fc,stroke:#6c8ebf,color:#111111;
classDef dec fill:#fff2cc,stroke:#d6b656,color:#111111;
classDef warn fill:#ffe6cc,stroke:#d79b00,color:#111111;
classDef alt fill:#e1d5e7,stroke:#9673a6,color:#111111;
classDef muted fill:#f5f5f5,stroke:#999999,color:#666666;
class USER start
class LOAD,RESULT proc
class PREVIEW dec
class APPLY alt
class DEPLOYMENTS warn
class REVIEW muted
```
Authorization: `RequireAdmin` on both the Razor page and `IBundleImporter.*` entrypoints.
@@ -1,116 +0,0 @@
<mxfile host="app.diagrams.net">
<diagram id="topology" name="Topology">
<mxGraphModel dx="1400" dy="900" grid="1" gridSize="10" guides="1" arrows="1"
fold="1" page="1" pageScale="1" pageWidth="1300" pageHeight="900" math="0" shadow="0">
<root>
<mxCell id="0" />
<mxCell id="1" parent="0" />
<!-- Central Cluster container -->
<mxCell id="central" value="Central Cluster" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#6c8ebf;verticalAlign=top;fontStyle=1;fontSize=14;" vertex="1" parent="1">
<mxGeometry x="60" y="60" width="380" height="320" as="geometry" />
</mxCell>
<mxCell id="cc-a" value="ClusterClient&#10;(command/control)" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#fff2cc;strokeColor=#d6b656;fontSize=12;" vertex="1" parent="1">
<mxGeometry x="90" y="110" width="150" height="50" as="geometry" />
</mxCell>
<mxCell id="cc-b" value="ClusterClient&#10;(command/control)" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#fff2cc;strokeColor=#d6b656;fontSize=12;" vertex="1" parent="1">
<mxGeometry x="90" y="170" width="150" height="50" as="geometry" />
</mxCell>
<mxCell id="cc-n" value="ClusterClient&#10;(command/control)" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#fff2cc;strokeColor=#d6b656;fontSize=12;" vertex="1" parent="1">
<mxGeometry x="90" y="230" width="150" height="50" as="geometry" />
</mxCell>
<mxCell id="grpc-client" value="SiteStreamGrpcClient&#10;(real-time data)" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontSize=12;" vertex="1" parent="1">
<mxGeometry x="90" y="300" width="150" height="50" as="geometry" />
</mxCell>
<!-- Site A -->
<mxCell id="siteA" value="Site A Cluster" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#e1d5e7;strokeColor=#9673a6;verticalAlign=top;fontStyle=1;fontSize=14;" vertex="1" parent="1">
<mxGeometry x="720" y="60" width="380" height="250" as="geometry" />
</mxCell>
<mxCell id="siteA-comm" value="SiteCommunicationActor&#10;(via Receptionist)" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#fff2cc;strokeColor=#d6b656;fontSize=12;" vertex="1" parent="1">
<mxGeometry x="760" y="110" width="190" height="50" as="geometry" />
</mxCell>
<mxCell id="siteA-grpc" value="SiteStreamGrpcServer&#10;(Kestrel HTTP/2, port 8083)" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontSize=12;" vertex="1" parent="1">
<mxGeometry x="760" y="180" width="190" height="50" as="geometry" />
</mxCell>
<mxCell id="siteA-clusterclient" value="ClusterClient &#8594; Central&#10;(CentralCommunicationActor)" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#fff2cc;strokeColor=#d6b656;fontSize=11;" vertex="1" parent="1">
<mxGeometry x="760" y="245" width="190" height="50" as="geometry" />
</mxCell>
<!-- Site B -->
<mxCell id="siteB" value="Site B Cluster" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#e1d5e7;strokeColor=#9673a6;verticalAlign=top;fontStyle=1;fontSize=14;" vertex="1" parent="1">
<mxGeometry x="720" y="370" width="380" height="130" as="geometry" />
</mxCell>
<mxCell id="siteB-comm" value="SiteCommunicationActor&#10;(via Receptionist)" style="rounded=1;whiteSpace=wrap;html=1;fillColor=#fff2cc;strokeColor=#d6b656;fontSize=12;" vertex="1" parent="1">
<mxGeometry x="760" y="410" width="190" height="40" as="geometry" />
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