Пример #1
0
def linking_nodes_diagram():
    from diagrams import Diagram, Cluster
    from diagrams.aws.compute import EC2
    from diagrams.aws.network import ELB
    from diagrams.aws.network import Route53
    from diagrams.onprem.database import PostgreSQL  # Would typically use RDS from aws.database
    from diagrams.onprem.inmemory import Redis  # Would typically use ElastiCache from aws.database

    with Diagram(
            "Simple Website Diagram", direction='LR'
    ) as diag4:  # It's LR by default, but you have a few options with the orientation
        dns = Route53("DNS")
        load_balancer = ELB("Load Balancer")
        database = PostgreSQL("User Database")
        cache = Redis("Cache")
        with Cluster("Webserver Cluster"):
            svc_group = [
                EC2("Webserver 1"),
                EC2("Webserver 2"),
                EC2("Webserver 3")
            ]
        dns >> load_balancer >> svc_group
        svc_group >> cache
        svc_group >> database
    print(
        diag4
    )  # This will illustrate the diagram if you are using a Google Colab or Jypiter notebook.
Пример #2
0
def nodes_diagram():
    with Diagram("Simple Website Diagram") as diag2:
        dns = Route53("dns")
        load_balancer = ELB("Load Balancer")
        database = PostgreSQL("User Database")
        cache = Redis("Cache")
        svc_group = [
            EC2("Webserver 1"),
            EC2("Webserver 2"),
            EC2("Webserver 3")
        ]
    print(
        diag2
    )  # This will illustrate the diagram if you are using a Google Colab or Jypiter notebook.
Пример #3
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def generate_overview_diagram():
    
    graph_attr = {
        "bgcolor": "transparent"
    }

    with Diagram("Overview", show=False, filename="bin/overview", graph_attr=graph_attr):

        with Cluster("Client"):
            webapp =  Angular("webapp")

        with Cluster("API Services"):
            status_service = Python("status_service")
            task_service = Python("task_service")
            worker_service = Python("worker_service")
            metrics_service = Python("metrics_service")

        with Cluster("Intermediate Services"):
            
            with Cluster("Clearly Client Cluster"):
                clearly_client = Python("clearly_client")

        with Cluster("Backend Services"):

            with Cluster("Clearly Server Cluster"):
                clearly_server = Python("clearly_server")

        with Cluster("External Connections"):

            with Cluster("Message Broker"):
                redis = Redis("redis")

            with Cluster("Monitoring"):
                grafana = Grafana("grafana")
                prometheus = Prometheus("prometheus")
        
        
        webapp >> status_service << clearly_client
        webapp >> task_service << clearly_client
        webapp >> worker_service << clearly_client

        clearly_client >> clearly_server >> redis
        metrics_service << prometheus
        metrics_service >> clearly_server
def linking_nodes_diagram():
    with Diagram(
            "Simple Website Diagram", direction='LR'
    ) as diag4:  # It's LR by default, but you have a few options with the orientation
        dns = Route53("DNS")
        load_balancer = ELB("Load Balancer")
        database = PostgreSQL("User Database")
        cache = Redis("Cache")
        with Cluster("Webserver Cluster"):
            svc_group = [
                EC2("Webserver 1"),
                EC2("Webserver 2"),
                EC2("Webserver 3")
            ]
        dns >> load_balancer >> svc_group
        svc_group >> cache
        svc_group >> database
    print(
        diag4
    )  # This will illustrate the diagram if you are using a Google Colab or Jypiter notebook.
Пример #5
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def nodes_diagram():
    from diagrams import Diagram, Cluster
    from diagrams.aws.compute import EC2
    from diagrams.aws.network import ELB
    from diagrams.aws.network import Route53
    from diagrams.onprem.database import PostgreSQL  # Would typically use RDS from aws.database
    from diagrams.onprem.inmemory import Redis  # Would typically use ElastiCache from aws.database

    with Diagram("Simple Website Diagram") as diag2:
        dns = Route53("dns")
        load_balancer = ELB("Load Balancer")
        database = PostgreSQL("User Database")
        cache = Redis("Cache")
        svc_group = [
            EC2("Webserver 1"),
            EC2("Webserver 2"),
            EC2("Webserver 3")
        ]
    print(
        diag2
    )  # This will illustrate the diagram if you are using a Google Colab or Jypiter notebook.
Пример #6
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def simple_main():
    # graph_attr é a lista de parâmetros utilizados na construção do diagrama.
    graph_attr = {"fontsize": "32", "fontcolor": "#1D3B52", "bgcolor": "white"}

    # Cria o Diagrama base do nosso mapa
    with Diagram('fboaventura.dev',
                 direction='LR',
                 filename='simple_fboaventura_dev',
                 outformat='png',
                 graph_attr=graph_attr,
                 show=False) as diag:
        # Adiciona os nós no mapa
        ingress = Haproxy('loadbalancer')
        webserver = Nginx('django')
        db = Postgresql('database')
        memcached = Memcached('sessions')

        # Criamos um cluster para os componentes do Celery, que trabalham em conjunto
        with Cluster('Celery'):
            beat = Celery('beat')
            workers = [Celery('worker1'), Celery('worker2')]
            flower = Celery('flower')
            broker = Rabbitmq('broker')
            logs = Redis('logs')

        # Montamos o mapa de relacionamentos entre os nós
        ingress >> webserver
        webserver >> broker
        beat >> broker
        workers >> beat
        webserver >> db
        db >> broker
        webserver >> memcached
        broker >> logs
        workers >> logs
        flower >> beat
        flower >> workers
        beat >> logs
Пример #7
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node_attr = {
    "fontsize": "15",
    "width": "1.2",
    "height": "1.2",
    "fontcolor": "#000000"
}

with Diagram(
    name="",
    show=False,
    filename="docs/diagram/architecture",
    graph_attr=graph_attr,
    node_attr=node_attr,
    edge_attr={"color": "#566573"}
):

    client = Pod("Clients")

    api = Pod("APIs")

    broker = RabbitMQ("Broker")

    database = Redis("Backend")

    worker = Pod("Workers")

    client << api << database << worker

    client >> api >> broker >> worker
Пример #8
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from diagrams.firebase.base import Firebase
from diagrams.azure.database import CosmosDb, SQLDatabases, CacheForRedis
from diagrams.azure.storage import BlobStorage
from diagrams.aws.database import Dynamodb, RDS, Elasticache
from diagrams.aws.storage import S3

node_attr = {"fontsize": "20"}
graph_attr = {"fontsize": "28"}

with Diagram("", show=False, direction="TB", node_attr=node_attr):
    with Cluster("On-Premises", graph_attr=graph_attr):
        with Cluster("Relational Database", graph_attr=graph_attr):
            relational = Mssql("")
            relational - [Oracle("")]
        with Cluster("Document Database", graph_attr=graph_attr):
            documentdb = Mongodb("\nMongoDB")
            documentdb - [Couchdb("\nCouchDB")] - Firebase("\nFirebase")
        with Cluster("Cache", graph_attr=graph_attr):
            cache = Redis("\nRedis")
            cache - [Memcached("\nMemcached")] - Hazelcast("\nHazelcast")

    with Cluster("Cloud", graph_attr=graph_attr):
        with Cluster("Azure", graph_attr=graph_attr):
            azure = CosmosDb("\nCosmos DB")
            azure - [
                SQLDatabases("\nSQL DB")
            ] - CacheForRedis("\nRedis") - BlobStorage("\nBlob Storage")
        with Cluster("AWS", graph_attr=graph_attr):
            aws = Dynamodb("\nDynamoDB")
            aws - [RDS("\nRDS")] - Elasticache("\nElasticache") - S3("\nS3")
Пример #9
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from diagrams import Diagram, Cluster
from diagrams.aws.compute import EC2
from diagrams.aws.network import ELB
from diagrams.aws.network import Route53, CloudFront
from diagrams.onprem.database import PostgreSQL  # Would typically use RDS from aws.database
from diagrams.onprem.inmemory import Redis  # Would typically use ElastiCache from aws.database
from diagrams.aws.storage import S3
from diagrams.aws.database import Aurora

with Diagram(
        "Simple Programs API", direction='LR'
) as diag:  # It's LR by default, but you have a few options with the orientation
    dns = Route53("dns")
    load_balancer = ELB("Load Balancer")
    # database = PostgreSQL("Programs DB")
    cache = Redis("Cache")
    content = S3("Blob storage")
    content_cache = CloudFront("CloudFront")

    with Cluster("DB Cluster"):
        db_main = Aurora("main")
        db_main - [Aurora("backup"), Aurora("backup")]

    with Cluster("Programs API Cluster"):
        svc_group = [EC2("Server 1"), EC2("Server 2"), EC2("Server 3")]
    dns >> load_balancer >> svc_group
    svc_group >> cache >> db_main
    svc_group >> db_main
    svc_group >> content_cache >> content
diag
Пример #10
0
        random_demo = Server("Random demo")
        tic_tac_toe = Server("Tic tac toe")
        users_fastapi = Server("Users Fastapi")
        webservers = [
            fulltext_search,
            book_collection,
            geolocation_search,
            random_demo,
            users,
            users_fastapi,
        ]

    proxy = HAProxy("Krakend")
    mqtt_service = Server("MQTT service")
    mongo = MongoDB("MongoDb")
    mosquitto = IotMqtt("Mosquitto")
    grafana = Grafana("Grafana")
    influxdb = InfluxDB("InfluxDB")
    redis = Redis("Redis")

    webservers >> Edge(color="brown") >> mongo
    users >> Edge(color="brows") >> redis
    book_collection >> Edge(color="black") >> users
    mqtt_service >> Edge(color="brown") >> mosquitto
    mqtt_service >> Edge(color="brown") >> mongo
    mqtt_service >> Edge(color="brown") >> influxdb
    grafana >> Edge(color="brown") >> influxdb

    proxy >> Edge(color="black") >> random_demo
    proxy >> Edge(color="black") >> users
Пример #11
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# Cria o Diagrama base do nosso mapa
with Diagram('fboaventura.dev', direction='LR', filename='simple_fboaventura_dev',
             outformat='png', graph_attr=graph_attr) as diag:
    # Adiciona os nós no mapa
    ingress = Haproxy('loadbalancer')
    webserver = Nginx('django')
    db = Postgresql('database')
    memcached = Memcached('sessions')

    # Criamos um cluster para os componentes do Celery, que trabalham em conjunto
    with Cluster('Celery'):
        beat = Celery('beat')
        workers = [Celery('worker1'), Celery('worker2')]
        flower = Celery('flower')
        broker = Rabbitmq('broker')
        logs = Redis('logs')

    # Montamos o mapa de relacionamentos entre os nós
    ingress >> webserver
    webserver >> broker
    beat >> broker
    workers >> beat
    webserver >> db
    db >> broker
    webserver >> memcached
    broker >> logs
    workers >> logs
    flower >> beat
    flower >> workers
    beat >> logs
Пример #12
0
    redis_haproxy = HAProxy('HAProxy for Redis Cluster')
    db_haproxy = HAProxy('HAProxy for MySQL Cluster')

    with Cluster('Users') as users:
        with Cluster('Desktop users'):
            dns << LinuxGeneral() >> lb_firewall >> lb
            dns << Windows() >> lb_firewall >> lb

        with Cluster('Mobile users'):
            dns << IOS() >> lb_firewall >> lb
            dns << Android() >> lb_firewall >> lb

    with Cluster('Redis Cluster'):
        redis_nodes = []

        redis_main = Redis('Redis: main')
        redis_nodes.append(redis_main)

        for n in range(1, NUM_REDIS_REPLICAS + 1):
            replica = Redis(f'Redis: replica {n}')
            redis_nodes.append(replica)

            redis_main << replica
            redis_main >> replica

            replica >> redis_haproxy
            redis_haproxy >> replica

        redis_haproxy.connect(
            redis_main, Edge(redis_haproxy, reverse=True, color='#5e73e5'))
        redis_main.connect(redis_haproxy,
Пример #13
0
                Server("fe-server-03")
            ]

        backend_lb = Nginx("Backend-LB")

        with Cluster("Backend Cluster"):
            backend = [
                Server("be-server-01"),
                Server("be-server-02"),
                Server("be-server-03")
            ]

        Mysql_db = Mysql("MySQL-DB")

        with Cluster("Redis Cluster"):
            master = Redis("Master")
            master - Redis("Replica")

        with Cluster("Metrics"):
            metrics = Prometheus("Metric")
            metrics << Grafana("Monitoring")

        frontend_lb = Nginx("Frontend-LB")
    internet = Internet("Internet")
    webuser = Users("User")

    webuser >> Edge(color="black", label="TCP/443") >> internet >> Edge(color="black", label="TCP/443") >> \
    frontend_lb >> Edge(color="darkgreen", label="TCP/80") >> frontend >> Edge(color="darkgreen", label="TCP/80") >> \
    backend_lb >> Edge(color="darkgreen", label="TCP/80") >> backend >> Edge(color="red", label="TCP/3306",style="dashed") >> Mysql_db \
    >>  backend >>  Edge(color="orange", style="dotted") >>metrics
    backend >> Edge(color="blue", style="dotted") >> master
Пример #14
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from diagrams import Cluster, Diagram, Edge
from diagrams.onprem.compute import Server
from diagrams.onprem.inmemory import Redis
from diagrams.onprem.monitoring import Prometheus
from diagrams.onprem.network import Haproxy
from diagrams.aws.compute import ECS

with Diagram(name="Advanced Prometheus Cluster Setup", show=False):
    haproxy = Haproxy("haproxy")

    with Cluster("App Cluster"):
        app = Server("app")
        app_redis = Redis("pushgateway_redis_buffer")
        app - Edge(color="brown", style="dashed") - app_redis

        app_cluster = [app, app_redis]

    with Cluster("Prometheus Cluster"):
        with Cluster("Prom1"):
            push1 = ECS('pushgateway')
            prom1 = Prometheus('prometheus')

        with Cluster("Prom2"):
            push2 = ECS('pushgateway')
            prom2 = Prometheus('prometheus')

        with Cluster("Prom3"):
            push3 = ECS('pushgateway')
            prom3 = Prometheus('prometheus')

        push1 << Edge(label="pull", color="brown") << prom1
Пример #15
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        postgres = PostgreSQL("AWS-RDS PG")

        with Cluster("Node Cold Storage"):
            cold_storage_node = NodeJS("Cold Storage Code")

        s3_cold_storage = S3("S3 (Cold Storage)")

    with Cluster("Scanning"):
        with Cluster("Configurable CRON jobs"):
            cron = [NodeJS("Nightly CRON job"), NodeJS("Weekly CRON job")]

        with Cluster("Producer Logic"):
            producer_node = NodeJS("producer code")

        with Cluster("Message Queues"):
            queue = Redis("Headless Queue")

        with Cluster("Node.js Consumers"):
            node_consumer_apps = [NodeJS("Headless Scans"), NodeJS("HTTP scans")]

    # API
    (
        api_data_gov
        >> Edge(label="manages")
        >> router
        >> Edge(label="calls")
        >> node_api_app
    )
    node_api_app >> Edge(label="queries") >> postgres

    # Data and Storage
Пример #16
0
    restaurantDB  = MySQL("restaurant")
    restaurantSvc = Service("restaurant svc")
    restaurantApp = Pod("restaurant app")
    restaurantApp >> restaurantDB
    restaurantSvc >> restaurantApp

    reviewDB  = MongoDB("review")
    reviewSvc = Service("review svc")
    with Cluster("review app"):
        reviewApp1 = Pod("v1")
        reviewApp2 = Pod("v2")
        reviewApps = [reviewApp1, reviewApp2]
    reviewApps >> reviewDB

    ratingDB  = Redis("rating")
    ratingSvc = Service("rating svc")
    ratingApp = Pod("rating app")
    ratingApp >> ratingDB

    gatewaySvc >> gateway
    reviewSvc  >> reviewApps
    ratingSvc  >> ratingApp

    customUser >> ing >> orderWebUi >> gatewaySvc
    gateway    >> orderSvc
    gateway    >> restaurantSvc
    orderApp   >> reviewSvc
    orderApp   >> restaurantSvc
    reviewApp2 >> ratingSvc
Пример #17
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from diagrams.onprem.network import Internet, Nginx
from diagrams.saas.chat import Slack
from diagrams.onprem.client import User

graph_attr = {"fontsize": "18", "pad": "0"}

with Diagram(
        "SSL Checker Dashboard Diagram",
        filename="ssl-checker-diagram",
        show=False,
        graph_attr=graph_attr,
):
    user = User("User")
    ingress = Nginx("ingress")

    with Cluster("Dashboard Replicas"):
        dashboards = [
            Docker("dashboard"),
            Docker("dashboard"),
            Docker("dashboard"),
        ]

    checker = Docker("checker")

    notifier = Docker("notifier")

    user >> ingress >> dashboards >> Redis("redis") << [checker, notifier]

    checker >> Internet("hosts with SSL")
    notifier >> Slack("Slack")
Пример #18
0
        prometheus = Prometheus("Prometheus")
        grafana = Grafana("Grafana")

        prometheus >> service1
        prometheus >> service2
        grafana >> prometheus
        support >> grafana

        with Cluster("Streams"):
            kafka = Kafka("Kafka")
            ibmmq = Ibmmq("MQ")

        with Cluster("Databases"):
            cassandra = Cassandra("NoSQL DB\n(Cassandra)")
            database = PostgreSQL("SQL DB\n(Postgres)")
            redis = Redis("Cache\n(Redis)")

        with Cluster("Other services"):
            service3 = EC2("")
            service4 = EC2("")
            service5 = EC2("")
            service6 = EC2("")

        with Cluster("SSO Infrastructure"):
            sso = EC2("SSO")

    user >> internet

    internet >> load_balancer

    load_balancer >> service1
Пример #19
0
if len(sys.argv) > 1:
    file = str(sys.argv[1])
else:
    file = "diagram"

with Diagram("Advanced Web Service with On-Premise", filename=file,
             show=False):
    ingress = Nginx("ingress")

    metrics = Prometheus("metric")
    metrics << Grafana("monitoring")

    with Cluster("Service Cluster"):
        grpcsvc = [Server("grpc1"), Server("grpc2"), Server("grpc3")]

    with Cluster("Sessions HA"):
        master = Redis("session")
        master - Redis("replica") << metrics
        grpcsvc >> master

    with Cluster("Database HA"):
        master = PostgreSQL("users")
        master - PostgreSQL("slave") << metrics
        grpcsvc >> master

    aggregator = Fluentd("logging")
    aggregator >> Kafka("stream") >> Spark("analytics")

    ingress >> grpcsvc >> aggregator
Пример #20
0
from diagrams import Cluster, Diagram, Edge
from diagrams.programming.framework import React
from diagrams.programming.language import Rust
from diagrams.programming.language import TypeScript
from diagrams.onprem.database import MariaDB
from diagrams.onprem.inmemory import Redis

with Diagram("Architecture", show=False):
    storages = [MariaDB("MariaDB"), Redis("Redis")]

    with Cluster("Client"):
        index = React("index.html")

        with Cluster("Pages"):
            pages_index = React("App.tsx")
            pages = pages_index - [React("timeline"), React("post")]
            index >> pages_index

        with Cluster("Components"):
            components_index = TypeScript("index.ts")
            components = components_index - [
                React("TextField"), React("Section")
            ]
            for i in range(len(pages)):
                pages[i] >> components_index

        with Cluster("Models"):
            models_index = TypeScript("index.ts")
            models = models_index - [TypeScript("post"), TypeScript("session")]

        with Cluster("API Fetchers"):
Пример #21
0
        web_clients << Edge(color="green") >> hasura >> Edge(
            color="green") << pg

        with Cluster("Aiven"):
            kfk = Kafka("Kakfa")
        web_clients << Edge(color="red", label="Produce/Consume") >> kfk
        kfk >> Edge(color="red", label="Postgres Sink Connector") >> pg

        with Cluster("Message Search"):
            es = Elasticsearch("Elasticsearch")
        kfk >> Edge(color="blue", label="Elasticsearch Sink Connector") >> es
        es << Edge(color="blue", label="Search") >> web_clients

        with Cluster("Caching"):
            with Cluster("Aiven"):
                rds = Redis("Redis")
        web_clients << Edge(color="yellow", label="Response") << rds << Edge(
            color="yellow", label="Response") << hasura

    # Step 5
    with Diagram(show=True, filename=files[4]):
        with Cluster("Metrics"):
            metrics = InfluxDB("InfluxDB / M3")
            graf = Grafana("Dashboards")

        with Cluster("Web"):
            web_clients = [React("Client 1"), React("Client 2")]
        with Cluster("API and Database"):
            with Cluster("Heroku"):
                hasura = Server("GraphQL")
            with Cluster("Aiven"):
Пример #22
0
from diagrams.onprem.logging import Fluentd
from diagrams.onprem.monitoring import Grafana, Prometheus
from diagrams.onprem.network import Nginx
from diagrams.onprem.queue import Kafka

with Diagram(name="Advanced Web Service with On-Premise (colored)", show=False):
    ingress = Nginx("ingress")

    metrics = Prometheus("metric")
    metrics << Edge(color="firebrick", style="dashed") << Grafana("monitoring")

    with Cluster("Service Cluster"):
        grpcsvc = [
            Server("grpc1"),
            Server("grpc2"),
            Server("grpc3")]

    with Cluster("Sessions HA"):
        master = Redis("session")
        master - Edge(color="brown", style="dashed") - Redis("replica") << Edge(label="collect") << metrics
        grpcsvc >> Edge(color="brown") >> master

    with Cluster("Database HA"):
        master = PostgreSQL("users")
        master - Edge(color="brown", style="dotted") - PostgreSQL("slave") << Edge(label="collect") << metrics
        grpcsvc >> Edge(color="black") >> master

    aggregator = Fluentd("logging")
    aggregator >> Edge(label="parse") >> Kafka("stream") >> Edge(color="black", style="bold") >> Spark("analytics")

    ingress >> Edge(color="darkgreen") << grpcsvc >> Edge(color="darkorange") >> aggregator
Пример #23
0
from diagrams.oci.monitoring import Queue
from diagrams.onprem.database import MySQL
from diagrams.onprem.inmemory import Redis
from diagrams.onprem.network import Nginx, Apache, Internet
from diagrams.onprem.queue import Celery
"""
https://diagrams.mingrammer.com
"""
with Diagram("Sample", show=False):
    user_web = EC2("Web")

    with Cluster('WEB SERVER'):
        web_server = [Apache('Web Server'), Nginx('Web Server')]

    with Cluster('QUEUE'):
        sever_queue = Redis('Queue Broker')
        sever_queue - [Celery('Queue Worker')]

    with Cluster('DATABASE'):
        db_master = MySQL('Database')
        # db_master - Database('Database')

    with Cluster('DATABASE2'):
        db_slave = MySQL('Database2')
        # db_slave - Database('Database2')

    user_web >> web_server >> sever_queue
    sever_queue >> db_master
    sever_queue >> db_slave
    web_server >> db_master
    web_server >> db_slave
Пример #24
0
from diagrams import Cluster

from diagrams.onprem.compute import Server
from diagrams.onprem.inmemory import Redis
from diagrams.onprem.queue import RabbitMQ

with Cluster('Graph clustering'):
    grphclus = Server('grphclus-rest')
    grphclus_optimizer = Server('grphclus-optimizer')
    grphclus_pollster = Server('grphclus-pollster')

    inmemory = Redis('in memory')
    bus = RabbitMQ('edge inputs')

    grphclus_pollster >> bus
    grphclus_optimizer >> [grphclus_pollster, inmemory]

    grphclus >> inmemory
Пример #25
0
with Diagram(title,
             filename=filename,
             graph_attr=graph_attr,
             outformat='png',
             direction=direction,
             show=False):
    ingress = Nginx("ingress")

    metrics = Prometheus("metric")
    metrics << Edge(color="firebrick", style="dashed") << Grafana("monitoring")

    with Cluster("Service Cluster"):
        grpcsvc = [Server("grpc1"), Server("grpc2"), Server("grpc3")]

    with Cluster("Sessions HA"):
        primary = Redis("session")
        primary - Edge(color="brown",
                       style="dashed") - Redis("replica") << Edge(
                           label="collect") << metrics
        grpcsvc >> Edge(color="brown") >> primary

    with Cluster("Database HA"):
        primary = PostgreSQL("users")
        primary - Edge(color="brown",
                       style="dotted") - PostgreSQL("replica") << Edge(
                           label="collect") << metrics
        grpcsvc >> Edge(color="black") >> primary

    aggregator = Fluentd("logging")
    aggregator >> Edge(label="parse") >> Kafka("stream") >> Edge(
        color="black", style="bold") >> Spark("analytics")
Пример #26
0
from diagrams.onprem.monitoring import Grafana, Prometheus
from diagrams.onprem.network import Nginx
from diagrams.onprem.queue import Kafka

with Diagram(name="Advanced Web Service with On-Premise (colored)",
             show=False):
    ingress = Nginx("ingress")

    metrics = Prometheus("metric")
    metrics << Edge(color="firebrick", style="dashed") << Grafana("monitoring")

    with Cluster("Service Cluster"):
        grpcsvc = [Server("grpc1"), Server("grpc2"), Server("grpc3")]

    with Cluster("Sessions HA"):
        master = Redis("session")
        master - Edge(color="brown",
                      style="dashed") - Redis("replica") << Edge(
                          label="collect") << metrics
        grpcsvc >> Edge(color="brown") >> master

    with Cluster("Database HA"):
        master = PostgreSQL("users")
        master - Edge(color="brown",
                      style="dotted") - PostgreSQL("slave") << Edge(
                          label="collect") << metrics
        grpcsvc >> Edge(color="black") >> master

    aggregator = Fluentd("logging")
    aggregator >> Edge(label="parse") >> Kafka("stream") >> Edge(
        color="black", style="bold") >> Spark("analytics")