# tapir **URL:** https://softwaremill.community/c/tapir/5.md?page=1 [Latest](https://softwaremill.community/latest.md) · [Categories](https://softwaremill.community/categories.md) · [Tags](https://softwaremill.community/tags.md) **Page:** 2 --- ## [Integration with http4s middleware (like http4s-session)](https://softwaremill.community/t/integration-with-http4s-middleware-like-http4s-session/465)
**Author:** [@KaranAhlawat](https://softwaremill.community/u/KaranAhlawat)\ **Replies:** 6\ **Last updated:** [January 1, 2025, 8:01am UTC](https://softwaremill.community/t/integration-with-http4s-middleware-like-http4s-session/465 "2025-01-01T08:01:49Z")
Hi all, I’d like to use this little http4s middleware http4s-session. It requires session routes, which is essentially an alias for context routes with a ContextResponse instead of a regular Response. So, I am able to… --- ## [Introducing ServerSentEvents capability: failing to achieve type safety](https://softwaremill.community/t/introducing-serversentevents-capability-failing-to-achieve-type-safety/460)
**Author:** [@arturaz](https://softwaremill.community/u/arturaz)\ **Replies:** 3\ **Last updated:** [December 5, 2024, 10:59am UTC](https://softwaremill.community/t/introducing-serversentevents-capability-failing-to-achieve-type-safety/460 "2024-12-05T10:59:57Z")
Hi there. I’m introducing SSE in my own little framework. I have this code. Capability package framework.tapir.capabilities /\*\* Capability trait for server-sent events. \*/ trait ServerSentEvents Shared code extensio… --- ## [Prometheus metrics best practices](https://softwaremill.community/t/prometheus-metrics-best-practices/456)
**Author:** [@Angel-OW](https://softwaremill.community/u/Angel-OW)\ **Replies:** 1\ **Last updated:** [November 18, 2024, 8:35am UTC](https://softwaremill.community/t/prometheus-metrics-best-practices/456 "2024-11-18T08:35:42Z")
Hi, what is the standard way to collect Prometheus metrics across different endpoints with different labels using a giant MetricLabels class that contains all possible labels for every endpoint? grouping endpoints with… --- ## [Reg. validation of endpoints against provided schema](https://softwaremill.community/t/reg-validation-of-endpoints-against-provided-schema/451)
**Author:** [@hochgi](https://softwaremill.community/u/hochgi)\ **Replies:** 4\ **Last updated:** [October 30, 2024, 1:42pm UTC](https://softwaremill.community/t/reg-validation-of-endpoints-against-provided-schema/451 "2024-10-30T13:42:29Z")
Regarding this issue: I could really use such a “static validator”. Thing is, that I don’t think it’s feasible to fully validate “statically”. By “static” I mean given 2 definitions, whether they’re in openAPI format… --- ## [Collection is not shown as required in the Open API Documentation](https://softwaremill.community/t/collection-is-not-shown-as-required-in-the-open-api-documentation/449)
**Author:** [@pme123](https://softwaremill.community/u/pme123)\ **Replies:** 3\ **Last updated:** [October 22, 2024, 12:42pm UTC](https://softwaremill.community/t/collection-is-not-shown-as-required-in-the-open-api-documentation/449 "2024-10-22T12:42:14Z")
I have the following case class: case class ProductToOpen( newAccounts: Seq\[NewAccount\] = Seq(NewAccount()), someRequired: Boolean = true, .... ) This creates me the following documentation: So it works… --- ## [Any timeline on when we can expect an Ox based lambda handler?](https://softwaremill.community/t/any-timeline-on-when-we-can-expect-an-ox-based-lambda-handler/444)
**Author:** [@DamianReeves](https://softwaremill.community/u/DamianReeves)\ **Replies:** 1\ **Last updated:** [September 30, 2024, 8:55am UTC](https://softwaremill.community/t/any-timeline-on-when-we-can-expect-an-ox-based-lambda-handler/444 "2024-09-30T08:55:18Z")
I am enjoying the simplicity of the Ox based sever for Netty and am hoping to use it in AWS Lambda where not having a project with a ton of dependencies in a good thing. --- ## [Newest zio & tapir seem to break rewriting middleware](https://softwaremill.community/t/newest-zio-tapir-seem-to-break-rewriting-middleware/436)
**Author:** [@rleibman](https://softwaremill.community/u/rleibman)\ **Replies:** 2\ **Last updated:** [September 6, 2024, 3:16pm UTC](https://softwaremill.community/t/newest-zio-tapir-seem-to-break-rewriting-middleware/436 "2024-09-06T15:16:16Z")
I posted this as well in the zio discord because I’m not sure which of the two updates broke it. Thanks for the help! After the last update to zio-http, a middleware I have has stopped working (it could also have to do… --- ## [Maximal number of successive inlines (32) exceeded](https://softwaremill.community/t/maximal-number-of-successive-inlines-32-exceeded/440)
**Author:** [@objektwerks](https://softwaremill.community/u/objektwerks)\ **Replies:** 1\ **Last updated:** [September 3, 2024, 11:24pm UTC](https://softwaremill.community/t/maximal-number-of-successive-inlines-32-exceeded/440 "2024-09-03T23:24:26Z")
Please reference this Tapir schema: I receive this error: Maximal number of successive inlines (32) exceeded This project, though, works just fine: Setting scalacOptions to “-Xmax-inlines=128” does not work. Thought… --- ## [Prometheus JVM metrics](https://softwaremill.community/t/prometheus-jvm-metrics/429)
**Author:** [@matejcerny](https://softwaremill.community/u/matejcerny)\ **Replies:** 3\ **Last updated:** [September 3, 2024, 1:28pm UTC](https://softwaremill.community/t/prometheus-jvm-metrics/429 "2024-09-03T13:28:22Z")
Hi, Any ideas on how to implement JVM metrics with tapir? So far, I’ve come up with this object MetricsRouter: private val registry = PrometheusRegistry.defaultRegistry private val threadDemonCount = Metric\[IO, Ga… --- ## [Access request attributes supplied by EndpointInterceptor](https://softwaremill.community/t/access-request-attributes-supplied-by-endpointinterceptor/431)
**Author:** [@ArtyomGabeev](https://softwaremill.community/u/ArtyomGabeev)\ **Replies:** 3\ **Last updated:** [September 3, 2024, 1:27pm UTC](https://softwaremill.community/t/access-request-attributes-supplied-by-endpointinterceptor/431 "2024-09-03T13:27:22Z")
Hi, Is it possible to access attributes populated by EndpointInterceptor? My use case, trying to extract some observability logic, and I found endpoint context to be useful in order to get template path / principal. H… --- ## [Dealing with assembly duplicate in generated project](https://softwaremill.community/t/dealing-with-assembly-duplicate-in-generated-project/438)
**Author:** [@fayi](https://softwaremill.community/u/fayi)\ **Replies:** 4\ **Last updated:** [September 2, 2024, 9:55am UTC](https://softwaremill.community/t/dealing-with-assembly-duplicate-in-generated-project/438 "2024-09-02T09:55:11Z")
Hi, I generated a sample project with scala3(3.5.0), zio, zio-http and zio-json. I added sbt-assembly to build a fat jar and and immediately had a duplicate error i’m not sure how to deal with. \[error\] 1 error(s) were … --- ## [Getting the Tapir annotations of fields](https://softwaremill.community/t/getting-the-tapir-annotations-of-fields/435)
**Author:** [@Iltotore](https://softwaremill.community/u/Iltotore)\ **Replies:** 1\ **Last updated:** [August 16, 2024, 9:43am UTC](https://softwaremill.community/t/getting-the-tapir-annotations-of-fields/435 "2024-08-16T09:43:04Z")
Hello. I am trying to get the Tapir annotations (e.g @description) of the fields of a case class in order to use apply them to another schema. For example, I would like to be able to get the description of each field fo… --- ## [Embedding the custom body model validation as a given Codec?](https://softwaremill.community/t/embedding-the-custom-body-model-validation-as-a-given-codec/433)
**Author:** [@coryfklein](https://softwaremill.community/u/coryfklein)\ **Replies:** 2\ **Last updated:** [August 16, 2024, 9:36am UTC](https://softwaremill.community/t/embedding-the-custom-body-model-validation-as-a-given-codec/433 "2024-08-16T09:36:27Z")
Say I have a User model that is an input to my server: case class User(name: String, age: Int) object User: val validator: Validator.Custom\[User\] = Validator.Custom\[User\] { u =\> if u.age \< 0 then … --- ## [Security in token for auth.bearer](https://softwaremill.community/t/security-in-token-for-auth-bearer/427)
**Author:** [@Razvan\_Bugariu](https://softwaremill.community/u/Razvan_Bugariu)\ **Replies:** 4\ **Last updated:** [August 5, 2024, 11:57am UTC](https://softwaremill.community/t/security-in-token-for-auth-bearer/427 "2024-08-05T11:57:05Z")
I have this tapir endpoint: val secretPlace: Endpoint\[AuthenticationToken, Unit, String, String, Any\] = endpoint.get .securityIn("secret-place") .securityIn(auth.bearer\[String\]().mapTo\[AuthenticationToken\]) … --- ## [Why LocalDateTime codec is actually OffsetDateTime in UTC?](https://softwaremill.community/t/why-localdatetime-codec-is-actually-offsetdatetime-in-utc/425)
**Author:** [@mon4ter](https://softwaremill.community/u/mon4ter)\ **Replies:** 1\ **Last updated:** [August 5, 2024, 10:54am UTC](https://softwaremill.community/t/why-localdatetime-codec-is-actually-offsetdatetime-in-utc/425 "2024-08-05T10:54:10Z")
Why it’s shadily converts LocalDateTime to OffsetDateTime, so that adds Z suffix? Isn’t it supposed to be string.map(LocalDateTime.parse(\_))(DateTimeFormatter.ISO\_LOCAL\_DATE\_TIME.format).schema(Schema.schemaForLocalDat… --- ## [Custom co-recursive schemas](https://softwaremill.community/t/custom-co-recursive-schemas/422)
**Author:** [@uri](https://softwaremill.community/u/uri)\ **Replies:** 10\ **Last updated:** [July 25, 2024, 3:37pm UTC](https://softwaremill.community/t/custom-co-recursive-schemas/422 "2024-07-25T15:37:19Z")
Seen a couple examples of a recursive Schema and those have been tough enough to grok, but I seem to have gone further and have a co-recursive case. I have not seen that discussed, but please point me to where to look if… --- ## [Duplicate operationId's](https://softwaremill.community/t/duplicate-operationids/416)
**Author:** [@Thijs](https://softwaremill.community/u/Thijs)\ **Replies:** 14\ **Last updated:** [July 18, 2024, 2:29pm UTC](https://softwaremill.community/t/duplicate-operationids/416 "2024-07-18T14:29:06Z")
Currently Tapir is rendering specs with duplicate operationId’s. According the OpenAPI specification this should not be allowed, they should be unique. I think spec generation should fail, right? Reusing endpoint defini… --- ## [Codec equality considerations](https://softwaremill.community/t/codec-equality-considerations/401)
**Author:** [@tkroman](https://softwaremill.community/u/tkroman)\ **Replies:** 8\ **Last updated:** [July 18, 2024, 4:47am UTC](https://softwaremill.community/t/codec-equality-considerations/401 "2024-07-18T04:47:45Z")
Hello. Since codec instantiation happens like this: we have e.g. (new Tapir{}.emptyIO == new Tapir{}.emptyIO) == false This is obviously a synthetic example but a more general question is IMO valid: given that Endp… --- ## [Custom Recursive Schemas](https://softwaremill.community/t/custom-recursive-schemas/419)
**Author:** [@lgmyrek](https://softwaremill.community/u/lgmyrek)\ **Replies:** 5\ **Last updated:** [July 12, 2024, 7:00am UTC](https://softwaremill.community/t/custom-recursive-schemas/419 "2024-07-12T07:00:24Z")
Let’s assume I need to make some kind of custom coproduct schema that is also recursive and it is neither wrapped nor it has discriminator - let’s say for API compatibility example: model type Tree\[A\] = A Or Node\[A… --- ## [Why \`subtypeNameToSchemaName\` in Schema derivation always recalculates Snames](https://softwaremill.community/t/why-subtypenametoschemaname-in-schema-derivation-always-recalculates-snames/409)
**Author:** [@lgmyrek](https://softwaremill.community/u/lgmyrek)\ **Replies:** 10\ **Last updated:** [July 10, 2024, 12:22pm UTC](https://softwaremill.community/t/why-subtypenametoschemaname-in-schema-derivation-always-recalculates-snames/409 "2024-07-10T12:22:22Z")
I was wondering why subtypeNameToSchemaName in SchemaMagnoliaDerivation always recalculates names based on TypeName, instead eg. attempting to get those names from known Schema.name and if it doesn’t exist then fallback … --- ## [Why does \`query\` \`Codec\` uses \`List\[String\]\` as the low-level value?](https://softwaremill.community/t/why-does-query-codec-uses-list-string-as-the-low-level-value/413)
**Author:** [@arturaz](https://softwaremill.community/u/arturaz)\ **Replies:** 1\ **Last updated:** [July 1, 2024, 5:48pm UTC](https://softwaremill.community/t/why-does-query-codec-uses-list-string-as-the-low-level-value/413 "2024-07-01T17:48:05Z")
Hey. While implementing a Codec for my custom data type I was surprised that a Codec\[String, MyType, CodecFormat.TextPlain\] could not be used for query input. Turns out query is defined like this: def query\[T: Codec\[L… --- ## [Path parameter style support](https://softwaremill.community/t/path-parameter-style-support/411)
**Author:** [@Thijs](https://softwaremill.community/u/Thijs)\ **Replies:** 8\ **Last updated:** [June 28, 2024, 1:07pm UTC](https://softwaremill.community/t/path-parameter-style-support/411 "2024-06-28T13:07:46Z")
I am trying to implement an endpoint definition with a comma separated path parameter, a List\[String\] (actually each String should be validated with a specific regex). I was yet unabled to build a proper, validated path… --- ## [ResponseInterceptor?](https://softwaremill.community/t/responseinterceptor/410)
**Author:** [@MaxPeroch](https://softwaremill.community/u/MaxPeroch)\ **Replies:** 2\ **Last updated:** [June 21, 2024, 3:42pm UTC](https://softwaremill.community/t/responseinterceptor/410 "2024-06-21T15:42:39Z")
Hello, Apologies in advance as I’m not too sure how to even phrase my question… I’m using a RequestInterceptor to read a correlation id header and set it to a IOLocal so that it can be added to the MDC when logging, or… --- ## [How to improve Open API documentation for Iron (Refined) Types](https://softwaremill.community/t/how-to-improve-open-api-documentation-for-iron-refined-types/396)
**Author:** [@pme123](https://softwaremill.community/u/pme123)\ **Replies:** 9\ **Last updated:** [May 28, 2024, 11:33am UTC](https://softwaremill.community/t/how-to-improve-open-api-documentation-for-iron-refined-types/396 "2024-05-28T11:33:19Z")
Hi How can I improve the documentation of Iron Types in Tapir Open API documentation? Here some examples: type Percentage = Int :| (GreaterEqual\[0\] & LessEqual\[100\]) type SelectedPensionType = Int :| any.In\[( 113932… --- ## [Log request body with ServerLog for http4s](https://softwaremill.community/t/log-request-body-with-serverlog-for-http4s/398)
**Author:** [@Ravenow](https://softwaremill.community/u/Ravenow)\ **Replies:** 4\ **Last updated:** [May 20, 2024, 6:01pm UTC](https://softwaremill.community/t/log-request-body-with-serverlog-for-http4s/398 "2024-05-20T18:01:10Z")
Im using tapir with http4s, and I want to log requests bodies, for that I’ve created custom ServerLog\[F\] implementation, and for example in ServerLog.requestHandled method, im trying to extract request body from underlyi… --- ## [Tapir IDE support (IntelliJ)](https://softwaremill.community/t/tapir-ide-support-intellij/392)
**Author:** [@kamilkloch](https://softwaremill.community/u/kamilkloch)\ **Replies:** 4\ **Last updated:** [May 10, 2024, 5:22pm UTC](https://softwaremill.community/t/tapir-ide-support-intellij/392 "2024-05-10T17:22:27Z")
hello, question to tapir maintainers: how are you dealing with IntelliJ being overwhelmed by the gargantuan (379033 settings, +300 subprojects) tapir codebase? I attach the screen from the IDE. Given its complexity, work… --- ## [How to handle extraction of two or more variables within single path segment?](https://softwaremill.community/t/how-to-handle-extraction-of-two-or-more-variables-within-single-path-segment/367)
**Author:** [@limpid-kzonix](https://softwaremill.community/u/limpid-kzonix)\ **Replies:** 3\ **Last updated:** [May 7, 2024, 3:01pm UTC](https://softwaremill.community/t/how-to-handle-extraction-of-two-or-more-variables-within-single-path-segment/367 "2024-05-07T15:01:46Z")
The issue that I came across is that the input does not support defining advanced use cases of URI matching, such as the following: multiple path variables in the same path segment, e.g., /people/{firstName}-{lastName}… --- ## [Multi param query parameters in Tapir](https://softwaremill.community/t/multi-param-query-parameters-in-tapir/388)
**Author:** [@SkyAblo2000](https://softwaremill.community/u/SkyAblo2000)\ **Replies:** 6\ **Last updated:** [April 24, 2024, 2:18pm UTC](https://softwaremill.community/t/multi-param-query-parameters-in-tapir/388 "2024-04-24T14:18:47Z")
Hello, I’m trying to define a Tapir endpoint that has two OptionalMultiQueryParamDecoderMatcher query parameters. Let’s say one parameter has the name id and the other name, such that I could call the endpoint with some… --- ## [Tapir-redoc annotations not working as expected](https://softwaremill.community/t/tapir-redoc-annotations-not-working-as-expected/289)
**Author:** [@andersbohn](https://softwaremill.community/u/andersbohn)\ **Replies:** 23\ **Last updated:** [April 18, 2024, 6:27am UTC](https://softwaremill.community/t/tapir-redoc-annotations-not-working-as-expected/289 "2024-04-18T06:27:20Z")
Hello Guys, Something about Tapir annotations with Redoc is not working as I would expect: When annotating attributes with @Schema.annotation.deprecated it mostly gets picked up. But when a case class is used for anot… --- ## [Unit testing websocket endpoint issue](https://softwaremill.community/t/unit-testing-websocket-endpoint-issue/383)
**Author:** [@rluk](https://softwaremill.community/u/rluk)\ **Replies:** 1\ **Last updated:** [April 5, 2024, 8:06am UTC](https://softwaremill.community/t/unit-testing-websocket-endpoint-issue/383 "2024-04-05T08:06:36Z")
Hello! I’m trying to add some unit tests for a websocket endpoint (Endpoint\[Unit, Long, String, Pipe\[IO, Request, Response\], Any with Fs2Streams\[IO\] with WebSockets\]). However, when I try to test connecting to the webso… [Previous page](https://softwaremill.community/c/tapir/5.md) [Next page](https://softwaremill.community/c/tapir/5.md?page=2)