1# Event Grid - Bicep Patterns
2 
3## Custom Topic
4 
5```bicep
6resource eventGridTopic 'Microsoft.EventGrid/topics@2023-12-15-preview' = {
7  name: '${resourcePrefix}-egt-${uniqueHash}'
8  location: location
9  properties: {
10    inputSchema: 'EventGridSchema'
11    publicNetworkAccess: 'Enabled'
12  }
13}
14```
15 
16## System Topic (Azure Resource Events)
17 
18```bicep
19resource storageSystemTopic 'Microsoft.EventGrid/systemTopics@2023-12-15-preview' = {
20  name: '${resourcePrefix}-storage-topic'
21  location: location
22  properties: {
23    source: storageAccount.id
24    topicType: 'Microsoft.Storage.StorageAccounts'
25  }
26}
27```
28 
29## Event Domain
30 
31```bicep
32resource eventDomain 'Microsoft.EventGrid/domains@2023-12-15-preview' = {
33  name: '${resourcePrefix}-domain'
34  location: location
35  properties: {
36    inputSchema: 'EventGridSchema'
37  }
38}
39```
40 
41## Publishing Events
42 
43### Node.js
44 
45```javascript
46const { EventGridPublisherClient, AzureKeyCredential } = require("@azure/eventgrid");
47 
48const client = new EventGridPublisherClient(
49  process.env.EVENTGRID_TOPIC_ENDPOINT,
50  "EventGrid",
51  new AzureKeyCredential(process.env.EVENTGRID_TOPIC_KEY)
52);
53 
54await client.send([{
55  eventType: "Order.Created",
56  subject: "/orders/12345",
57  dataVersion: "1.0",
58  data: { orderId: "12345" }
59}]);
60```
61 
62### Python
63 
64```python
65from azure.eventgrid import EventGridPublisherClient, EventGridEvent
66from azure.core.credentials import AzureKeyCredential
67 
68client = EventGridPublisherClient(
69    os.environ["EVENTGRID_TOPIC_ENDPOINT"],
70    AzureKeyCredential(os.environ["EVENTGRID_TOPIC_KEY"])
71)
72 
73client.send([EventGridEvent(
74    event_type="Order.Created",
75    subject="/orders/12345",
76    data={"orderId": "12345"},
77    data_version="1.0"
78)])
79```
80