Using the 'context' Object in Policy Expressions

Q

How to use the built-in "context" object in Policy expressions?

✍: FYIcenter.com

A

The built-in "context" object can be used any "@(...)" expressions or "@{...}" expression blocks. The "context" object allows you to access information related to Azure API operation through its properties and methods.

Here are some examples "context" properties and methods:

@(context.Api.Name) - Returns the name of this API.
@(context.Operation.UrlTemplate) - Returns the URI template of this operation.
@(context.Request.Method) - Returns the method verb of the request.
@(context.Response.Body.As<JObject>()) - Converts the response body into a JSON Object.

For more information on the built-in "context" object, see API Management policy expressions Website.

⇒ 'context.Request.MatchedParameters' URL Template Parameters

⇐ '@{...}' Expression Blocks in Azure API Policy

⇑ Using Azure API Policy

⇑⇑ Microsoft Azure API Management Tutorials

2018-02-14, ∼3962🔥, 0💬

'context.Request.Url.Query' Query String Parameters
How to access Query String parameters from "context.Request.Url.Query" object in Azure API Policy? Query String parameters are parameters provided in the query string in the form of name=value&name=value. ..format. For example, the following URL has two query string parameters: "date" and "s... 2024-01-03, ≈18🔥, 1💬

💬 2024-01-03 BOB: something meaningful

Dump Everything from 'context.Request'
How to build a test service operation to dump everything from the "context.Request" object in the response in Azure API Policy? If you want to build a test service operation to dump everything from the request to the response with an Azure API policy, you can follow this tutorial: 1. Go to the publi... 2018-01-24, ≈15🔥, 0💬

'context.Request.MatchedParameters' URL Template Parameters
How to access URL template parameters from "context.Request.MatchedParame ters"object in Azure API Policy? URL template parameters are parameters used in the URL defined in the URL template: For example, the following URL template contains two template parameters, "cid", "oid" and "date": /customers... 2018-02-14, ≈12🔥, 0💬

'@(...)' Expressions in Azure API Policy
How to use the "@(...)" expression in Azure API Policy? The "@(...)" expression in Azure API Policy can be used to include a single C# expression as the attribute value or text value in most policy statements. When a "@(...)" expression is included in a policy statement, the C# expression will be ev... 2018-02-14, ∼5285🔥, 0💬

Using .NET CLR Types in Azure API Policy
How to use .NET CLR Types in Azure API Policy? By default, Azure imports many basic .NET CLR (Common Language Runtime) types into the API policy execution environment. Imported .NET CLR types can be used in any "@(...)" expressions or "@{...}" expression blocks. For example, the following "@{...}" e... 2018-01-24, ∼4009🔥, 0💬

Using the 'context' Object in Policy Expressions
How to use the built-in "context" object in Policy expressions? The built-in "context" object can be used any "@(...)" expressions or "@{...}" expression blocks. The "context" object allows you to access information related to Azure API operation through its properties and methods. Here are some exa... 2018-02-14, ∼3963🔥, 0💬

'@{...}' Expression Blocks in Azure API Policy
How to use the "@{...}" expression block in Azure API Policy? The "@{...}" expression block in Azure API Policy can be used to include a C# statement block as the attribute value or text value in most policy statements. C# statement block in the "@{...}" expression block must end with a "return" sta... 2018-02-14, ∼3481🔥, 0💬

Azure API Policy XML Document Structure
What is the XML Document Structure of an Azure API service operation? Azure API Policy XML Document contains 4 policy blocks: "inbound" - Policy sub element to provide policy statements that controls the generation of the inbound HTTP request to be delivered to the backend service. "backend" - Polic... 2018-03-10, ∼2563🔥, 0💬

'trace' Policy Statement
How to use the "trace" Policy Statement for an Azure API service operation? The "trace" policy statement allows you to generate debugging messages into the API trace output. The "trace" statement can be used in any policy blocks in the policy XML document. The "trace" statement has the following syn... 2018-03-10, ∼2354🔥, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.