title | linkTitle | aliases | body_class | |
---|---|---|---|---|
Demo Architecture |
Architecture |
|
otel-mermaid-max-width |
OpenTelemetry Demo is composed of microservices written in different programming languages that talk to each other over gRPC and HTTP; and a load generator which uses Locust to fake user traffic.
graph TD
subgraph Service Diagram
accountingservice(Accounting Service):::dotnet
adservice(Ad Service):::java
cache[(Cache<br/>(Valkey))]
cartservice(Cart Service):::dotnet
checkoutservice(Checkout Service):::golang
currencyservice(Currency Service):::cpp
emailservice(Email Service):::ruby
flagd(Flagd):::golang
flagdui(Flagd-ui):::typescript
frauddetectionservice(Fraud Detection Service):::kotlin
frontend(Frontend):::typescript
frontendproxy(Frontend Proxy <br/>(Envoy)):::cpp
imageprovider(Image Provider <br/>(nginx)):::cpp
loadgenerator([Load Generator]):::python
paymentservice(Payment Service):::javascript
productcatalogservice(Product Catalog Service):::golang
quoteservice(Quote Service):::php
recommendationservice(Recommendation Service):::python
shippingservice(Shipping Service):::rust
queue[(queue<br/>(Kafka))]:::java
adservice ---->|gRPC| flagd
checkoutservice -->|gRPC| cartservice
checkoutservice --->|TCP| queue
cartservice --> cache
cartservice -->|gRPC| flagd
checkoutservice -->|gRPC| shippingservice
checkoutservice -->|gRPC| paymentservice
checkoutservice --->|HTTP| emailservice
checkoutservice -->|gRPC| currencyservice
checkoutservice -->|gRPC| productcatalogservice
frauddetectionservice -->|gRPC| flagd
frontend -->|gRPC| adservice
frontend -->|gRPC| cartservice
frontend -->|gRPC| checkoutservice
frontend ---->|gRPC| currencyservice
frontend ---->|gRPC| recommendationservice
frontend -->|gRPC| productcatalogservice
frontendproxy -->|gRPC| flagd
frontendproxy -->|HTTP| frontend
frontendproxy -->|HTTP| flagdui
frontendproxy -->|HTTP| imageprovider
Internet -->|HTTP| frontendproxy
loadgenerator -->|HTTP| frontendproxy
paymentservice -->|gRPC| flagd
queue -->|TCP| accountingservice
queue -->|TCP| frauddetectionservice
recommendationservice -->|gRPC| productcatalogservice
recommendationservice -->|gRPC| flagd
shippingservice -->|HTTP| quoteservice
end
classDef dotnet fill:#178600,color:white;
classDef cpp fill:#f34b7d,color:white;
classDef golang fill:#00add8,color:black;
classDef java fill:#b07219,color:white;
classDef javascript fill:#f1e05a,color:black;
classDef kotlin fill:#560ba1,color:white;
classDef php fill:#4f5d95,color:white;
classDef python fill:#3572A5,color:white;
classDef ruby fill:#701516,color:white;
classDef rust fill:#dea584,color:black;
classDef typescript fill:#e98516,color:black;
graph TD
subgraph Service Legend
dotnetsvc(.NET):::dotnet
cppsvc(C++):::cpp
golangsvc(Go):::golang
javasvc(Java):::java
javascriptsvc(JavaScript):::javascript
kotlinsvc(Kotlin):::kotlin
phpsvc(PHP):::php
pythonsvc(Python):::python
rubysvc(Ruby):::ruby
rustsvc(Rust):::rust
typescriptsvc(TypeScript):::typescript
end
classDef dotnet fill:#178600,color:white;
classDef cpp fill:#f34b7d,color:white;
classDef golang fill:#00add8,color:black;
classDef java fill:#b07219,color:white;
classDef javascript fill:#f1e05a,color:black;
classDef kotlin fill:#560ba1,color:white;
classDef php fill:#4f5d95,color:white;
classDef python fill:#3572A5,color:white;
classDef ruby fill:#701516,color:white;
classDef rust fill:#dea584,color:black;
classDef typescript fill:#e98516,color:black;
Follow these links for the current state of metric and trace instrumentation of the demo applications.
The collector is configured in otelcol-config.yml, alternative exporters can be configured here.
graph TB
subgraph tdf[Telemetry Data Flow]
subgraph subgraph_padding [ ]
style subgraph_padding fill:none,stroke:none;
%% padding to stop the titles clashing
subgraph od[OpenTelemetry Demo]
ms(Microservice)
end
ms -.->|"OTLP<br/>gRPC"| oc-grpc
ms -.->|"OTLP<br/>HTTP POST"| oc-http
subgraph oc[OTel Collector]
style oc fill:#97aef3,color:black;
oc-grpc[/"OTLP Receiver<br/>listening on<br/>grpc://localhost:4317"/]
oc-http[/"OTLP Receiver<br/>listening on <br/>localhost:4318<br/>"/]
oc-proc(Processors)
oc-prom[/"OTLP HTTP Exporter"/]
oc-otlp[/"OTLP Exporter"/]
oc-grpc --> oc-proc
oc-http --> oc-proc
oc-proc --> oc-prom
oc-proc --> oc-otlp
end
oc-prom -->|"localhost:9090/api/v1/otlp"| pr-sc
oc-otlp -->|gRPC| ja-col
subgraph pr[Prometheus]
style pr fill:#e75128,color:black;
pr-sc[/"Prometheus OTLP Write Receiver"/]
pr-tsdb[(Prometheus TSDB)]
pr-http[/"Prometheus HTTP<br/>listening on<br/>localhost:9090"/]
pr-sc --> pr-tsdb
pr-tsdb --> pr-http
end
pr-b{{"Browser<br/>Prometheus UI"}}
pr-http ---->|"localhost:9090/graph"| pr-b
subgraph ja[Jaeger]
style ja fill:#60d0e4,color:black;
ja-col[/"Jaeger Collector<br/>listening on<br/>grpc://jaeger:4317"/]
ja-db[(Jaeger DB)]
ja-http[/"Jaeger HTTP<br/>listening on<br/>localhost:16686"/]
ja-col --> ja-db
ja-db --> ja-http
end
subgraph gr[Grafana]
style gr fill:#f8b91e,color:black;
gr-srv["Grafana Server"]
gr-http[/"Grafana HTTP<br/>listening on<br/>localhost:3000"/]
gr-srv --> gr-http
end
pr-http --> |"localhost:9090/api"| gr-srv
ja-http --> |"localhost:16686/api"| gr-srv
ja-b{{"Browser<br/>Jaeger UI"}}
ja-http ---->|"localhost:16686/search"| ja-b
gr-b{{"Browser<br/>Grafana UI"}}
gr-http -->|"localhost:3000/dashboard"| gr-b
end
end
Find the Protocol Buffer Definitions in the /pb/
directory.