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Introduce encoded parameters #5317

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175c67c
Introduce encoded parameters
sebastienros Oct 20, 2025
7491bd3
Update docs/deployment/manifest-format.md
sebastienros Oct 20, 2025
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27 changes: 23 additions & 4 deletions docs/deployment/manifest-format.md
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Original file line number Diff line number Diff line change
Expand Up @@ -110,8 +110,8 @@ Publishing the manifest from the default starter template for Aspire produces th
"OTEL_DOTNET_EXPERIMENTAL_OTLP_EMIT_EXCEPTION_LOG_ATTRIBUTES": "true",
"OTEL_DOTNET_EXPERIMENTAL_OTLP_EMIT_EVENT_LOG_ATTRIBUTES": "true",
"ConnectionStrings__cache": "{cache.connectionString}",
"services__apiservice__0": "{apiservice.bindings.http.url}",
"services__apiservice__1": "{apiservice.bindings.https.url}"
"services__apiservice__http__0": "{apiservice.bindings.http.url}",
"services__apiservice__https__0": "{apiservice.bindings.https.url}"
},
"bindings": {
"http": {
Expand Down Expand Up @@ -142,8 +142,8 @@ This dependency is known because the environment variables for the _webfrontend_
"env": {
// ... other environment variables omitted for clarity
"ConnectionStrings__cache": "{cache.connectionString}",
"services__apiservice__0": "{apiservice.bindings.http.url}",
"services__apiservice__1": "{apiservice.bindings.https.url}"
"services__apiservice__http__0": "{apiservice.bindings.http.url}",
"services__apiservice__https__0": "{apiservice.bindings.https.url}"
},
```

Expand Down Expand Up @@ -228,6 +228,25 @@ The connection string placeholder references the `password` input parameter from

The preceding JSON snippet shows the `inputs` field for a resource that has a `connectionString` field. The `password` input parameter is a string type and is marked as a secret. The `default` field is used to specify a default value for the input parameter. In this case, the default value is generated using the `generate` field, with random string of a minimum length.

When a parameter is using a filter (for example `uri`), the manifest contains an additional resource that represents the filtered projection.

- The resource type is `"annotated.string"`.
- `value` references the raw parameter value (`{parameter-name.value}`).
- `filter` names the formatter (e.g., `"uri"`, ...).
- The resource name is derived from the parameter name and format (`{parameter}-{format}-encoded`). Names are deduplicated if multiple projections share the same base.

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Copilot AI Oct 20, 2025

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The documentation states that names are deduplicated but doesn't explain how deduplication works or what the resulting names would look like. Consider adding an example or brief explanation of the deduplication strategy.

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For example, if multiple projections would result in the same base name, a numeric suffix is appended to ensure uniqueness (for example, `redis-password-uri-encoded`, `redis-password-uri-encoded-1`, `redis-password-uri-encoded-2`, etc.).

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@copilot update to mention it's using {format} to deduplicate

Example projection generated for a URI-encoded password:

```json
"redis-password-uri-encoded": {
"type": "annotated.string",
"value": "{redis-password.value}",
"filter": "uri"
}
```

The original parameter remains in the manifest, preserving its secret metadata. Tools should apply the indicated `filter` when materializing the value.

## Built-in resources

The following table is a list of resource types that are explicitly generated by Aspire and
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