Azure开发教程：Azure_Serverless_Computing_Cookbook.pdf

【实例截图】

【核心代码】

Table of Contents
Preface xiii
Chapter 1: Developing Cloud Applications Using Function
Triggers and Bindings 1
Introduction 1
Building a backend Web API using HTTP triggers 2
Getting ready 3
How to do it… 3
How it works… 8
See also 8
Persisting employee details using Azure Storage table output bindings 8
Getting ready 9
How to do it... 9
How it works... 13
Understanding storage connection 14
What is the Azure Table storage service? 15
Partition key and row key 15
There's more... 15
Saving the profile images to Queues using Queue output bindings 15
Getting ready 16
How to do it… 16
How it works… 18
Storing the image in Azure Blob Storage 18
Getting ready 18
How to do it... 18
How it works... 20
There's more... 21
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Chapter 2: Working with Notifications Using the SendGrid
and Twilio Services 23
Introduction 23
Sending an email notification to the administrator of a website
using the SendGrid service 24
Getting ready 24
Creating a SendGrid account 24
Generating an API key from the SendGrid portal 27
Configuring the SendGrid API key with the Azure Function app 28
How to do it... 28
Create Storage Queue binding to the HTTP Trigger 29
Create Queue Trigger to process the message of the HTTP Trigger 30
Create SendGrid output binding to the Queue Trigger 31
How it works... 33
There's more 34
Sending an email notification dynamically to the end user 34
Getting ready 34
How to do it... 35
Accept the new email Parameter in the RegisterUser function 35
Retrieve the UserProfile information in the SendNotifications trigger 36
How it works... 37
There's more... 38
Implementing email logging in Azure Blob Storage 39
How to do it... 39
How it works... 41
Modifying the email content to include an attachment 41
Getting ready 42
How to do it... 42
Customizing the log file name using IBinder interface 42
Adding an attachment to the email 43
Sending an SMS notification to the end user using the Twilio service 44
Getting ready 45
How to do it... 47
How it works... 49
Chapter 3: Seamless Integration of Azure Functions with
Azure Services 51
Introduction 51
Using Cognitive Services to locate faces in images 52
Getting ready 52
Creating a new Computer Vision API account 52
Configuring application settings 53
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How to do it... 53
How it works... 60
There's more... 60
Azure SQL Database interactions using Azure Functions 61
Getting ready 61
How to do it... 63
How it works... 66
Monitoring tweets using Logic Apps and notifying users
when a popular user tweets 66
Getting ready 67
How to do it... 67
Creating a new Logic App 67
Designing the Logic App with Twitter and Gmail connectors 69
Testing the Logic App functionality 73
How it works... 74
Integrating Logic Apps with serverless functions 74
How to do it... 75
There's more... 79
See also 80
Auditing Cosmos DB data using change feed triggers 80
Getting ready 80
Creating a new Cosmos DB account 81
Creating a new Cosmos DB collection 81
How to do it... 82
How it works... 86
There's more... 86
Chapter 4: Understanding the Integrated Developer
Experience of Visual Studio Tools 87
Introduction 87
Creating a function app using Visual Studio 2017 88
Getting ready 88
How to do it... 90
How it works... 92
There's more... 92
Debugging C# Azure Functions on a local staged environment
using Visual Studio 2017 92
Getting ready 93
How to do it... 93
How it works... 97
There's more... 97
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Connecting to the Azure Storage cloud from the local
Visual Studio environment 98
Getting ready 98
How to do it... 98
How it works... 102
There's more... 102
Deploying the Azure Function app to Azure Cloud using
Visual Studio 103
How to do it... 103
There's more... 107
Debugging a live C# Azure Function, hosted on the Microsoft
Azure Cloud environment, using Visual Studio 107
Getting ready 108
How to do it... 108
Deploying Azure Functions in a container 111
Getting ready 112
Creating an ACR 113
How to do it... 114
Creating a Docker image for the function app 115
Pushing the Docker image to the ACR 116
Creating a new function app with Docker 118
How it works... 119
Chapter 5: Exploring Tests Tools for the Validation of
Azure Functions 121
Introduction 121
Testing Azure Functions 122
Getting ready 122
How to do it... 122
Testing HTTP triggers using Postman 123
Testing a Blob trigger using Microsoft Storage Explorer 125
Testing the Queue trigger using the Azure Management portal 128
There's more... 131
Testing an Azure Function on a staged environment using
deployment slots 131
How to do it... 132
There's more... 139
Load testing Azure Functions using Azure DevOps 139
Getting ready 140
How to do it... 140
There's more... 143
See also 144
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Creating and testing Azure Functions locally using Azure CLI tools 144
Getting ready 144
How to do it... 144
Testing and validating Azure Function responsiveness using
Application Insights 147
Getting ready 148
How to do it... 149
How it works... 152
There's more... 152
Developing unit tests for Azure Functions with HTTP triggers 152
Getting ready 153
How to do it... 154
Chapter 6: Monitoring and Troubleshooting Azure Serverless
Services 157
Introduction 157
Troubleshooting your Azure Functions 158
How to do it... 158
Viewing real-time application logs 158
Diagnosing the entire function app 160
There's more... 161
Integrating Azure Functions with Application Insights 163
Getting ready 163
How to do it... 164
How it works... 166
There's more... 166
Monitoring your Azure Functions 166
How to do it... 166
How it works... 168
Pushing custom telemetry details to Application Insights Analytics 168
Getting ready 170
How to do it... 170
Creating an Application Insights function 171
Configuring access keys 172
Integrating and testing an Application Insights query 174
Configuring the custom derived metric report 176
How it works... 178
Sending application telemetry details via email 179
Getting ready 179
How to do it... 180
How it works... 182
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There's more... 182
See also 182
Integrating real-time Application Insights monitoring data
with Power BI using Azure Functions 182
Getting ready 183
How to do it... 184
Configuring Power BI with a dashboard, a dataset, and the push URI 184
Creating an Azure Application Insights real-time Power BI – C# function 190
How it works... 193
There's more... 193
Chapter 7: Developing Reliable Serverless Applications Using
Durable Functions 195
Introduction 195
Configuring Durable Functions in the Azure Management portal 196
Getting ready 196
How to do it... 197
There's more... 198
Creating a Durable Function hello world app 199
Getting ready 199
How to do it... 199
Creating an HttpStart function in the Orchestrator client 200
Creating the Orchestrator function 202
Creating an activity function 204
How it works... 205
There's more... 205
Testing and troubleshooting Durable Functions 205
Getting ready 206
How to do it... 206
Implementing multithreaded reliable applications using
Durable Functions 208
Getting ready 208
How to do it... 209
Creating the Orchestrator function 209
Creating a GetAllCustomers activity function 210
Creating a CreateBARCodeImagesPerCustomer activity function 211
How it works... 213
There's more... 213
Chapter 8: Bulk Import of Data Using Azure Durable Functions
and Cosmos DB 215
Introduction 215
Business problem 216
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Durable serverless way of implementing an Excel import 217
Uploading employee data into Blob Storage 217
How to do it... 218
How it works... 221
There’s more... 222
Creating a Blob trigger 222
Getting ready 222
How to do it... 226
There’s more... 226
Creating the Durable Orchestrator and triggering it for each
Excel import 227
How to do it... 227
How it works... 230
There’s more... 230
Reading Excel data using activity functions 231
Getting ready 231
How to do it... 232
Read data from Blob Storage 232
Read Excel data from the stream 233
Create the activity function 234
There’s more... 236
Auto-scaling Cosmos DB throughput 237
Getting ready 237
How to do it... 239
There’s more... 241
Bulk inserting data into Cosmos DB 241
How to do it... 241
There’s more... 242
Chapter 9: Implementing Best Practices for Azure Functions 243
Adding multiple messages to a queue using the IAsyncCollector
function 244
Getting ready 244
How to do it... 245
How it works... 247
There's more... 247
Implementing defensive applications using Azure Functions
and queue triggers 247
Getting ready 248
How to do it... 248
CreateQueueMessage – C# console application 248
Developing the Azure Function – queue trigger 249
Running tests using the console application 250
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How it works... 251
There's more... 251
Handling massive ingress using Event Hubs for IoT and other
similar scenarios 252
Getting ready 252
How to do it... 252
Creating an Azure Function event hub trigger 252
Developing a console application that simulates IoT data 253
Avoiding cold starts by warming the app at regular intervals 256
Getting ready 256
How to do it... 257
Creating an HTTP trigger 257
Creating a timer trigger 257
There's more... 258
See also 258
Enabling authorization for function apps 258
Getting ready 258
How to do it... 259
How it works... 260
There's more... 260
Controlling access to Azure Functions using function keys 260
How to do it... 261
Configuring the function key for each application 261
Configuring one host key for all the functions in a single function app 262
There's more... 264
Securing Azure Functions using Azure Active Directory 264
Getting ready 265
How to do it... 265
Configuring Azure AD to the function app 265
Registering the client app in Azure AD 266
Granting the client app access to the backend app 269
Testing the authentication functionality using a JWT token 269
Configuring throttling of Azure Functions using API Management 271
Getting ready 272
How to do it... 273
Integrating Azure Functions with API Management 273
Configuring request throttling using inbound policies 276
Testing the rate limit inbound policy configuration 278
How it works... 279
Securely accessing SQL Database from Azure Functions using
Managed Service Identity 280
Getting ready 280
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How to do it... 281
Creating a function app using Visual Studio 2017 with V1 runtime 281
Creating a Logical SQL Server and a SQL Database 284
Enabling the managed service identity 284
There's more... 287
See also 287
Shared code across Azure Functions using class libraries 287
How to do it... 288
How it works... 290
There's more... 291
Using strongly typed classes in Azure Functions 291
Getting ready 291
How to do it... 292
How it works... 294
There's more... 294
Chapter 10: Configuring of Serverless Applications in the
Production Environment 295
Introduction 295
Deploying Azure Functions using the Run From Package 296
Getting ready 297
How to do it... 298
How it works... 299
There's more... 299
Deploying Azure Function using ARM templates 299
Getting ready 299
How to do it... 300
There's more... 303
Configuring custom domain to Azure Functions 303
Getting ready 304
How to do it... 304
Configuring function app with an existing domain 306
Techniques to access Application Settings 308
Getting ready 308
How to do it... 308
Accessing Application Settings and connection strings in the Azure Function code 308
Application setting – binding expressions 311
Creating and generating open API specifications using Swagger 311
Getting ready 312
How to do it... 312
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Breaking down large APIs into small subsets of APIs using proxies 316
Getting ready 316
How to do it... 317
Creating microservices 318
Creating the gateway proxies 318
Testing the proxy URLs 321
There's more... 321
See also 322
Moving configuration items from one environment to another
using resources 322
Getting ready 323
How to do it... 324
Chapter 11: Implementing and Deploying Continuous
Integration Using Azure DevOps 329
Introduction 329
Prerequisites 330
Continuous integration – creating a build definition 331
Getting ready 332
How to do it... 333
How it works... 337
There's more... 338
Continuous integration – queuing a build and triggering it manually 338
Getting ready 338
How to do it... 339
Configuring and triggering an automated build 341
How to do it... 342
How it works... 344
There's more... 344
Continuous integration – executing unit test cases in the pipeline 345
How to do it.. 346
There's more... 348
Creating a release definition 348
Getting ready 349
How to do it... 350
How it works... 358
There's more... 358
See also 359
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Triggering the release automatically 360
Getting ready 360
How to do it... 360
How it works... 362
There's more... 362
Other Books You May Enjoy 363
Index 367