lenso-capability-configuration-source 0.1.2

Portable bootstrap Configuration Source Capability for Lenso Hosts
Documentation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
// @generated by lenso-contract-codegen; do not edit.
use std::{fmt, rc::Rc};
use futures::future::LocalBoxFuture;
use lenso_kernel::{InvocationContext, NativeRequestEndpoint, NativeRequestFuture, NativeRequestHandle, PluginDependencies, RequestCapability, RuntimeFailure};

use lenso_plugin_authoring::{BoundCapabilityClient, CapabilityClient, CapabilityClientMany, CapabilityReference};
pub const CAPABILITY_ID: &str = "lenso.configuration.source@1";
pub const DESCRIPTOR_VERSION: &str = "1.0.0";
pub const DESCRIPTOR_DIGEST: &str = "sha256:ff815d269114b4cbe4b268a68dee06979f292395deadcc2a52a561634b48ca21";
pub const PORTABLE: bool = true;
pub const CROSS_LANE_TRANSFER: bool = false;
pub const SOURCE_CAPABILITY_ID: &str = CAPABILITY_ID;
pub const SOURCE_DESCRIPTOR_VERSION: &str = DESCRIPTOR_VERSION;
pub const SOURCE_DESCRIPTOR_DIGEST: &str = DESCRIPTOR_DIGEST;
pub const SOURCE_CONTRACT: CapabilityReference<SourceClient> = CapabilityReference::new(CAPABILITY_ID, DESCRIPTOR_VERSION, DESCRIPTOR_DIGEST);

#[doc(hidden)]
#[macro_export]
macro_rules! __lenso_provided_source { () => { "{\"capability_id\":\"lenso.configuration.source@1\",\"descriptor_version\":\"1.0.0\",\"operations\":[\"fetch\"],\"operation_kinds\":{},\"default_admission\":{\"queue_capacity\":0,\"max_concurrency\":1},\"operation_admissions\":{},\"event_admission\":null,\"cross_lane_transfer\":false}" }; }

#[doc(hidden)]
#[macro_export]
macro_rules! __lenso_required_source_client {
    () => { "{\"capability_id\":\"lenso.configuration.source@1\",\"descriptor_version\":\"1.0.0\",\"cardinality\":\"one\"}" };
    ($requirement_id:literal) => { concat!("{\"requirement_id\":", stringify!($requirement_id), ",\"capability_id\":\"lenso.configuration.source@1\",\"descriptor_version\":\"1.0.0\",\"cardinality\":\"one\"}") };
}

#[doc(hidden)]
#[macro_export]
macro_rules! __lenso_required_optional_source_client {
    ($requirement_id:literal) => { concat!("{\"requirement_id\":", stringify!($requirement_id), ",\"capability_id\":\"lenso.configuration.source@1\",\"descriptor_version\":\"1.0.0\",\"cardinality\":\"optional\"}") };
}

#[doc(hidden)]
#[macro_export]
macro_rules! __lenso_required_many_source_client {
    () => { "{\"capability_id\":\"lenso.configuration.source@1\",\"descriptor_version\":\"1.0.0\",\"cardinality\":\"many\"}" };
    ($requirement_id:literal) => { concat!("{\"requirement_id\":", stringify!($requirement_id), ",\"capability_id\":\"lenso.configuration.source@1\",\"descriptor_version\":\"1.0.0\",\"cardinality\":\"many\"}") };
}

pub const FETCH_OPERATION: &str = "fetch";

pub use lenso_contract_runtime::{Uint64, UnknownDomainError};
use lenso_contract_runtime::{decode_portable_json, encode_portable_json};

#[derive(Clone, Copy, Debug, PartialEq, serde::Serialize, serde::Deserialize)]
pub struct FetchRequest {

}

#[derive(Clone, Debug, PartialEq, serde::Serialize, serde::Deserialize)]
pub struct FetchResponse {
    #[serde(rename = "configurations")]
    #[serde(deserialize_with = "lenso_contract_runtime::serde::deserialize_required")]
    pub configurations: Vec<FetchResponseConfigurationsItem>,
    #[serde(rename = "revision")]
    #[serde(deserialize_with = "lenso_contract_runtime::serde::deserialize_required")]
    pub revision: Uint64,
}

#[derive(Clone, Debug, PartialEq, serde::Serialize, serde::Deserialize)]
pub struct FetchResponseConfigurationsItem {
    #[serde(rename = "instance_key")]
    #[serde(deserialize_with = "lenso_contract_runtime::serde::deserialize_required")]
    pub instance_key: String,
    #[serde(rename = "plugin_id")]
    #[serde(deserialize_with = "lenso_contract_runtime::serde::deserialize_required")]
    pub plugin_id: String,
    #[serde(rename = "toml")]
    #[serde(deserialize_with = "lenso_contract_runtime::serde::deserialize_required")]
    pub toml: String,
}

#[derive(Clone, Debug, PartialEq)]
pub enum FetchError {
    InvalidSource,
    Unknown(UnknownDomainError),
}

#[derive(Debug)]
pub struct Source;
impl RequestCapability for Source {
    type Request = FetchRequest;
    type Response = FetchResponse;
    type DomainError = FetchError;
    const ID: &'static str = CAPABILITY_ID;
    const DESCRIPTOR_VERSION: &'static str = DESCRIPTOR_VERSION;

    fn invoke_native(endpoint: &dyn NativeRequestEndpoint, operation: &str, request: Self::Request, context: InvocationContext) -> NativeRequestFuture<Self> {
        if operation != FETCH_OPERATION {
            return lenso_kernel::invoke_typed_or_erased_native_request::<Self>(endpoint, operation, request, context);
        }
        let Some(typed_endpoint) = endpoint
            .typed_endpoint()
            .and_then(|endpoint| endpoint.downcast_ref::<SourceRequestEndpoint>())
        else {
            return lenso_kernel::invoke_typed_or_erased_native_request::<Self>(endpoint, operation, request, context);
        };
        Rc::clone(&typed_endpoint.provider).fetch(context, request)
    }
}

impl serde::Serialize for FetchError {
    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
    where
        S: serde::Serializer,
    {
        use serde::ser::SerializeMap;
        match self {
            Self::InvalidSource => serializer.serialize_str("invalid_source"),
            Self::Unknown(value) => {
                let mut map = serializer.serialize_map(Some(1 + usize::from(value.payload.is_some()) + value.extra.len()))?;
                map.serialize_entry("code", &value.code)?;
                if let Some(payload) = &value.payload {
                    map.serialize_entry("payload", payload)?;
                }
                for (key, extra) in &value.extra {
                    map.serialize_entry(key, extra)?;
                }
                map.end()
            },
        }
    }
}

impl<'de> serde::Deserialize<'de> for FetchError {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: serde::Deserializer<'de>,
    {
        let value = <serde_json::Value as serde::Deserialize>::deserialize(deserializer)?;
        match value {
            serde_json::Value::String(code) => match code.as_str() {
                "invalid_source" => Ok(Self::InvalidSource),
                _ => Ok(Self::Unknown(UnknownDomainError { code, payload: None, extra: std::collections::BTreeMap::new() })),
            },
            serde_json::Value::Object(mut object) => {
                let Some(code) = object.remove("code").and_then(|value| value.as_str().map(ToOwned::to_owned)) else {
                    return Err(serde::de::Error::custom("Domain Error object is missing a string code"));
                };
                let payload = object.remove("payload");
                let extra = object.into_iter().collect::<std::collections::BTreeMap<_, _>>();
                Ok(Self::Unknown(UnknownDomainError { code, payload, extra }))
            }
            other => Err(serde::de::Error::custom(format!("Domain Error must be a string or object, got {other}"))),
        }
    }
}

pub fn encode_fetch_request(value: &FetchRequest) -> Result<String, serde_json::Error> { encode_portable_json(value) }
pub fn decode_fetch_request(wire: &str) -> Result<FetchRequest, serde_json::Error> { decode_portable_json(wire) }
pub fn encode_fetch_response(value: &FetchResponse) -> Result<String, serde_json::Error> { encode_portable_json(value) }
pub fn decode_fetch_response(wire: &str) -> Result<FetchResponse, serde_json::Error> { decode_portable_json(wire) }
pub fn encode_fetch_error(value: &FetchError) -> Result<String, serde_json::Error> { encode_portable_json(value) }
pub fn decode_fetch_error(wire: &str) -> Result<FetchError, serde_json::Error> { decode_portable_json(wire) }

#[doc(hidden)]
pub trait __LensoIntoSourceFetchResult {
    fn __lenso_into_result(self) -> Result<Result<FetchResponse, FetchError>, RuntimeFailure>;
}
impl __LensoIntoSourceFetchResult for Result<FetchResponse, FetchError> {
    fn __lenso_into_result(self) -> Result<Result<FetchResponse, FetchError>, RuntimeFailure> { Ok(self) }
}
impl __LensoIntoSourceFetchResult for Result<Result<FetchResponse, FetchError>, RuntimeFailure> {
    fn __lenso_into_result(self) -> Result<Result<FetchResponse, FetchError>, RuntimeFailure> { self }
}
impl __LensoIntoSourceFetchResult for Result<FetchResponse, lenso_plugin_authoring::PluginError<FetchError, RuntimeFailure>> {
    fn __lenso_into_result(self) -> Result<Result<FetchResponse, FetchError>, RuntimeFailure> {
        match self {
            Ok(value) => Ok(Ok(value)),
            Err(lenso_plugin_authoring::PluginError::Domain(error)) => Ok(Err(error)),
            Err(lenso_plugin_authoring::PluginError::Runtime(error)) => Err(error),
        }
    }
}
impl __LensoIntoSourceFetchResult for Result<FetchResponse, SourceInvocationError> {
    fn __lenso_into_result(self) -> Result<Result<FetchResponse, FetchError>, RuntimeFailure> {
        match self {
            Ok(value) => Ok(Ok(value)),
            Err(SourceInvocationError::Domain(error)) => Ok(Err(error)),
            Err(SourceInvocationError::Runtime(error)) => Err(error),
        }
    }
}

pub trait SourceProvider: fmt::Debug + 'static {
    fn fetch(&self, context: InvocationContext, request: FetchRequest) -> NativeRequestFuture<Source>;
}

#[doc(hidden)]
#[macro_export]
macro_rules! __lenso_native_lower_source {
    ($plugin:ty, $support:path) => {
        use $support as __LensoNativeSupportSource;
        impl $crate::SourceProvider for $plugin {
        fn fetch(&self, context: __LensoNativeSupportSource::InvocationContext, request: $crate::FetchRequest) -> __LensoNativeSupportSource::NativeRequestFuture<$crate::Source> {
            let plugin = self.clone();
            ::std::boxed::Box::pin(async move {
                let result = <$plugin>::fetch(&plugin, context, request).await;
                $crate::__LensoIntoSourceFetchResult::__lenso_into_result(result)
            })
        }
        }
    };
}

#[doc(hidden)]
#[macro_export]
macro_rules! __lenso_native_lower_object_source {
    ($object:ty, $plugin:ty, $support:path) => {
        use $support as __LensoNativeSupportSource;
        impl $crate::SourceProvider for $object {
        fn fetch(&self, context: __LensoNativeSupportSource::InvocationContext, request: $crate::FetchRequest) -> __LensoNativeSupportSource::NativeRequestFuture<$crate::Source> {
            let object = self.clone();
            ::std::boxed::Box::pin(async move {
                let plugin = object.get()?;
                let result = <$plugin>::fetch(plugin.as_ref(), context, request).await;
                $crate::__LensoIntoSourceFetchResult::__lenso_into_result(result)
            })
        }
        }
    };
}

#[doc(hidden)]
#[macro_export]
macro_rules! __lenso_native_lower_trait_object_source {
    ($object:ty, $plugin:ty, $support:path) => {
        use $support as __LensoNativeSupportSource;
        impl $crate::SourceProvider for $object {
        fn fetch(&self, context: __LensoNativeSupportSource::InvocationContext, request: $crate::FetchRequest) -> __LensoNativeSupportSource::NativeRequestFuture<$crate::Source> {
            let object = self.clone();
            ::std::boxed::Box::pin(async move {
                let plugin = object.get()?;
                <$plugin as $crate::SourceProvider>::fetch(plugin.as_ref(), context, request).await
            })
        }
        }
    };
}

#[derive(Debug)]
struct SourceRequestEndpoint { provider: Rc<dyn SourceProvider> }

#[derive(Debug)]
pub struct SourceEndpoint<P: SourceProvider> { provider: Rc<P>, request_endpoint: SourceRequestEndpoint }
impl<P: SourceProvider> SourceEndpoint<P> {
    pub fn new(provider: P) -> Self {
        let provider = Rc::new(provider);
        let request_provider: Rc<dyn SourceProvider> = provider.clone();
        Self { provider, request_endpoint: SourceRequestEndpoint { provider: request_provider } }
    }
}

impl<P: SourceProvider> NativeRequestEndpoint for SourceEndpoint<P> {
    fn capability_id(&self) -> &'static str { CAPABILITY_ID }
    fn descriptor_version(&self) -> &'static str { DESCRIPTOR_VERSION }
    fn operations(&self) -> &'static [&'static str] { &[
        FETCH_OPERATION,
    ] }
    fn typed_endpoint(&self) -> Option<&dyn std::any::Any> { Some(&self.request_endpoint) }
    fn invoke(&self, operation: &str, request: Box<dyn std::any::Any>, context: InvocationContext) -> LocalBoxFuture<'static, Result<Result<Box<dyn std::any::Any>, Box<dyn std::any::Any>>, RuntimeFailure>> {
        match operation {
            FETCH_OPERATION => {
                let Ok(request) = request.downcast::<FetchRequest>() else {
                    return Box::pin(futures::future::ready(Err(RuntimeFailure::ProtocolViolation { capability: CAPABILITY_ID })));
                };
                let invocation = Rc::clone(&self.provider).fetch(context, *request);
                Box::pin(async move {
                    invocation.await.map(|result| {
                        result
                            .map(|value| Box::new(value) as Box<dyn std::any::Any>)
                            .map_err(|error| Box::new(error) as Box<dyn std::any::Any>)
                    })
                })
            }
            _ => Box::pin(futures::future::ready(Err(RuntimeFailure::UnknownOperation { capability: CAPABILITY_ID, operation: operation.to_owned() }))),
        }
    }
}

#[doc(hidden)]
#[macro_export]
macro_rules! __lenso_native_endpoints_source {
    ($provider:expr, $support:path) => {{
        use $support as __LensoNativeSupport;
        let endpoint = ::std::rc::Rc::new($crate::SourceEndpoint::new($provider));
        (
            vec![endpoint.clone() as ::std::rc::Rc<dyn __LensoNativeSupport::NativeRequestEndpoint>],
            vec![],
            vec![],
        )
    }};
}

#[doc(hidden)]
#[macro_export]
macro_rules! __lenso_native_provide_source {
    ($provider:expr, $lifecycle:expr, $support:path) => {{
        use $support as __LensoNativeSupport;
        let (request_endpoints, stream_endpoints, event_endpoints) =
            $crate::__lenso_native_endpoints_source!($provider, $support);
        __LensoNativeSupport::NativePluginInstance::with_all_endpoints(
            request_endpoints,
            stream_endpoints,
            event_endpoints,
            $lifecycle,
        )
    }};
}

#[derive(Clone, Debug)]
pub struct SourceClient {
    fetch: NativeRequestHandle<Source>,
}
impl SourceClient {
    pub fn new(handle: NativeRequestHandle<Source>) -> Self {
        Self { fetch: handle }
    }

    pub fn from_dependencies(dependencies: &PluginDependencies) -> Result<Self, RuntimeFailure> {
        <Self as CapabilityClient>::from_dependencies(dependencies)
    }

    pub fn from_requirement(
        dependencies: &PluginDependencies,
        requirement_id: &str,
    ) -> Result<Self, RuntimeFailure> {
        <Self as CapabilityClient>::from_requirement(dependencies, requirement_id)
    }

    pub async fn fetch(&self, request: FetchRequest) -> Result<FetchResponse, SourceInvocationError> {
        self.fetch.invoke(FETCH_OPERATION, request).await
            .map_err(SourceInvocationError::Runtime)?
            .map_err(SourceInvocationError::Domain)
    }

    pub async fn fetch_with_context(&self, context: InvocationContext, request: FetchRequest) -> Result<FetchResponse, SourceInvocationError> {
        self.fetch.invoke_with_context(FETCH_OPERATION, context, request).await
            .map_err(SourceInvocationError::Runtime)?
            .map_err(SourceInvocationError::Domain)
    }
}

impl CapabilityClient for SourceClient {
    type Dependencies = PluginDependencies;
    type Error = RuntimeFailure;

    const CAPABILITY_ID: &'static str = CAPABILITY_ID;
    const DESCRIPTOR_VERSION: &'static str = DESCRIPTOR_VERSION;

    fn from_dependencies(dependencies: &PluginDependencies) -> Result<Self, RuntimeFailure> {
        Ok(Self {
            fetch: dependencies.one::<Source>()?,
        })
    }

    fn from_requirement(
        dependencies: &PluginDependencies,
        requirement_id: &str,
    ) -> Result<Self, RuntimeFailure> {
        let dependencies = dependencies.requirement(requirement_id)?;
        Self::from_dependencies(&dependencies)
    }

    fn already_connected() -> RuntimeFailure {
        RuntimeFailure::PluginFailure {
            detail: format!("Capability Port {CAPABILITY_ID} was connected more than once"),
        }
    }
}

impl CapabilityClientMany for SourceClient {
    fn many_from_dependencies(
        dependencies: &PluginDependencies,
    ) -> Result<Vec<BoundCapabilityClient<Self>>, RuntimeFailure> {
        dependencies
            .bindings()
            .iter()
            .filter(|binding| binding.capability_id() == CAPABILITY_ID)
            .map(|binding| {
                Ok(BoundCapabilityClient::new(
                    binding.provider_instance(),
                    Self {
                    fetch: binding.handle().ok_or(RuntimeFailure::Unavailable { capability: CAPABILITY_ID })?.typed::<Source>()?,
                    },
                ))
            })
            .collect()
    }

    fn many_from_requirement(
        dependencies: &PluginDependencies,
        requirement_id: &str,
    ) -> Result<Vec<BoundCapabilityClient<Self>>, RuntimeFailure> {
        let dependencies = dependencies.requirement(requirement_id)?;
        Self::many_from_dependencies(&dependencies)
    }
}

#[derive(Clone, Debug, PartialEq)]
pub enum SourceInvocationError {
    Domain(FetchError),
    Runtime(RuntimeFailure),
}

#[derive(Clone, Copy, Debug)]
pub struct SourceGuestClient<'a, H: lenso_guest_sdk::HostImports> {
    capability: lenso_guest_sdk::GuestCapability<'a, H>,
}

impl<'a, H: lenso_guest_sdk::HostImports> SourceGuestClient<'a, H> {
    pub fn from_context(context: &'a lenso_guest_sdk::GuestContext<H>) -> Result<Self, lenso_guest_sdk::GuestError<serde_json::Value>> {
        context
            .require(CAPABILITY_ID, DESCRIPTOR_VERSION, &[FETCH_OPERATION], &[], &[])
            .map(|capability| Self { capability })
    }

    pub fn fetch(&self, request: &FetchRequest) -> Result<FetchResponse, lenso_guest_sdk::GuestError<FetchError>> {
        self.capability.request(FETCH_OPERATION, request)
    }
}

#[derive(Debug, Default)]
pub struct SourceJsonCodec;

impl lenso_runtime_codec::JsonCapabilityCodec for SourceJsonCodec {
    fn capability_id(&self) -> &'static str { CAPABILITY_ID }

    fn descriptor_version(&self) -> &'static str { DESCRIPTOR_VERSION }

    fn descriptor_digest(&self) -> &'static str { DESCRIPTOR_DIGEST }

    fn request_operations(&self) -> &'static [&'static str] { &[FETCH_OPERATION] }
    fn stream_operations(&self) -> &'static [&'static str] { &[] }
    fn event_operations(&self) -> &'static [&'static str] { &[] }

    fn encode_request(&self, operation: &str, request: &dyn std::any::Any) -> Result<serde_json::Value, RuntimeFailure> {
        match operation {
            FETCH_OPERATION => {
                let value = request.downcast_ref::<FetchRequest>().ok_or_else(runtime_codec_protocol_failure)?;
                serde_json::to_value(value).map_err(|_| runtime_codec_protocol_failure())
            },
            _ => Err(runtime_codec_unknown_operation(operation)),
        }
    }

    fn decode_response(&self, operation: &str, value: serde_json::Value) -> Result<Box<dyn std::any::Any>, RuntimeFailure> {
        match operation {
            FETCH_OPERATION => serde_json::from_value::<FetchResponse>(value)
                .map(|value| Box::new(value) as Box<dyn std::any::Any>)
                .map_err(|_| runtime_codec_protocol_failure()),
            _ => Err(runtime_codec_unknown_operation(operation)),
        }
    }

    fn decode_domain_error(&self, operation: &str, value: serde_json::Value) -> Result<Box<dyn std::any::Any>, RuntimeFailure> {
        match operation {
            FETCH_OPERATION => serde_json::from_value::<FetchError>(value)
                .map(|value| Box::new(value) as Box<dyn std::any::Any>)
                .map_err(|_| runtime_codec_protocol_failure()),
            _ => Err(runtime_codec_unknown_operation(operation)),
        }
    }

    fn encode_stream_open(&self, operation: &str, _request: &dyn std::any::Any) -> Result<serde_json::Value, RuntimeFailure> {
        Err(runtime_codec_unknown_operation(operation))
    }

    fn encode_stream_message(&self, operation: &str, _message: &dyn std::any::Any) -> Result<serde_json::Value, RuntimeFailure> {
        Err(runtime_codec_unknown_operation(operation))
    }

    fn decode_stream_message(&self, operation: &str, _value: serde_json::Value) -> Result<Box<dyn std::any::Any>, RuntimeFailure> {
        Err(runtime_codec_unknown_operation(operation))
    }

    fn decode_stream_domain_error(&self, operation: &str, _value: serde_json::Value) -> Result<Box<dyn std::any::Any>, RuntimeFailure> {
        Err(runtime_codec_unknown_operation(operation))
    }

    fn encode_event(&self, operation: &str, _event: &dyn std::any::Any) -> Result<serde_json::Value, RuntimeFailure> {
        Err(runtime_codec_unknown_operation(operation))
    }

    fn invoke_host_request(&self, dependency: lenso_kernel::PluginDependencyHandle, operation: String, request: serde_json::Value, context: InvocationContext) -> lenso_runtime_codec::JsonHostRequestFuture {
        match operation.as_str() {
            FETCH_OPERATION => {
                let request = serde_json::from_value::<FetchRequest>(request).map_err(|_| runtime_codec_protocol_failure());
                Box::pin(async move {
                    let request = request?;
                    let handle = dependency.typed::<Source>()?;
                    match handle.invoke_with_context(FETCH_OPERATION, context, request).await? {
                        Ok(response) => serde_json::to_value(response)
                            .map(lenso_runtime_codec::JsonInvocationOutcome::Success)
                            .map_err(|_| runtime_codec_protocol_failure()),
                        Err(error) => serde_json::to_value(error)
                            .map(lenso_runtime_codec::JsonInvocationOutcome::DomainError)
                            .map_err(|_| runtime_codec_protocol_failure()),
                    }
                })
            },
            _ => Box::pin(std::future::ready(Err(runtime_codec_unknown_operation(&operation)))),
        }
    }

    fn open_host_stream(&self, _dependency: lenso_kernel::PluginStreamDependencyHandle, operation: String, _request: serde_json::Value, _context: InvocationContext) -> lenso_runtime_codec::JsonHostStreamOpenFuture {
        Box::pin(std::future::ready(Err(runtime_codec_unknown_operation(&operation))))
    }

    fn publish_host_event(&self, _dependency: lenso_kernel::PluginEventDependencyHandle, operation: String, _event: serde_json::Value, _context: InvocationContext) -> futures::future::LocalBoxFuture<'static, Result<(), RuntimeFailure>> {
        Box::pin(std::future::ready(Err(runtime_codec_unknown_operation(&operation))))
    }
}

fn runtime_codec_protocol_failure() -> RuntimeFailure { RuntimeFailure::ProtocolViolation { capability: CAPABILITY_ID } }

fn runtime_codec_unknown_operation(operation: &str) -> RuntimeFailure {
    RuntimeFailure::UnknownOperation { capability: CAPABILITY_ID, operation: operation.to_owned() }
}