feat: In-memory provider for e2e testing and minimal usage #546
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Signed-off-by: liran2000 <liran2000@gmail.com>
beeme1mr
changed the title
| private Flags.State state; | ||
| private Map<String, Object> variants; | ||
| private String defaultVariant; | ||
| } |
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I propose adding a context evaluator backed by a user-provided callback
See go-sdk implementation for example - https://github.com/open-feature/go-sdk/blob/main/pkg/openfeature/memprovider/in_memory_provider.go#L167-L175
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Trying to understand what is the purpose and value here with enhancing with additional testing capabilities. The in-memory provider is for testing purposes, how is adding a context evaluator helping with testing actual flow ? it will only test the testing provider ?
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The current implementation resides as a test source. This mismatch with the requirement of the specification.
When we agreed on the in-memory provider through OFEP and added it to the specification 1, the agreement was to make the in-memory an extra provider built into the SDK itself. And we agreed to support evaluation contexts through lambda/callback.
So the packaging of the implementation should be corrected first. I am proposing to move it to a package named memprovider or any better-named package.
Regarding the purpose, the main benefit of having evaluation context support is testing SDK. It allows us to write end-to-end tests (or to migrate existing ones based on flagd) for context evaluations and verify SDK correctness. Besides, end users can use the provider to prototype OpenFeature features.
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Overall great work. I would love to get this to mergeable status. Please check comments from my initial review and let me know if you have any concerns |
Signed-off-by: liran2000 <liran2000@gmail.com>
Signed-off-by: liran2000 <liran2000@gmail.com>
| @@ -16,20 +16,6 @@ If you think we might be out of date with the spec, you can check that by invoki | |||
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| If you're adding tests to cover something in the spec, use the `@Specification` annotation like you see throughout the test suites. | |||
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| ## End-to-End Tests | |||
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Rather than removing, IMO we should mention that the e2e tests use InMemoryProvider. Consider the GO SDK readme for reference - https://github.com/open-feature/go-sdk/blob/main/e2e/README.md
| File file = new File(classLoader.getResource("features/testing-flags.json").getFile()); | ||
| Path resPath = file.toPath(); | ||
| String conf = new String(java.nio.file.Files.readAllBytes(resPath), "UTF8"); | ||
| Flags flags = Flags.builder().setConfigurationJson(conf).build(); |
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This is unused and unnecessary 🤔 Was the intention here to fail fast with flag configuration validation?
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Leftover, will remove it
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Some observations and suggestions for improvement In the current implementation, flag configurations are loaded from a string. I think this is not ideal for general usage and diverge from the specification 1
I am suggesting changing the constructor to accept a known map of flags. The end user may use any mechanism to parse their flags and initialize the provider. Further, this should allow us to simplify Footnotes |
- move to non-test package - add ContextEvaluator - update Flags structure - implement events provider - enrich tests - refactor Signed-off-by: liran2000 <liran2000@gmail.com>
Signed-off-by: liran2000 <liran2000@gmail.com>
Signed-off-by: liran2000 <liran2000@gmail.com>
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| </plugins> | |||
| </build> | |||
| </profile> | |||
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We do not need to remove this profile. It is still needed and works normally
Changes you made at StepDefinisions.java [1] is sufficient to fulfill the comment
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Without this section, we do not initialize the test-harness submodule. See the build result - https://github.com/open-feature/java-sdk/actions/runs/5824793560/job/15795407914?pr=546
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By this comment it can be removed, if you still think it should remain update here and I can return it.
<!-- this profile handles running the flagd e2e tests -->
<!-- TODO: this profile can likely be removed with TODO: this section should be updated with https://github.com/open-feature/java-sdk/issues/523 -->
<!-- TODO: we should pull the submodule and run these tests unconditionall once flagd isn't required -->
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yes, we still need them. Tests are now independent from flagd but we need this profile to intialize git submodule and run gherkin tetsts
See the GitHub action - https://github.com/open-feature/java-sdk/blob/main/.github/workflows/pullrequest.yml#L42-L43
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I was thinking we could just always pull the submodule and copy the gherkin tests, since now they don't require the external flagd process. I dont really mind if we keep these integration tests on a separate profile or not.
I think if we keep the profile though, we should add back the little bit of documentation in the contributing guide about it.
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| private static Value objectToValue(Object object) { |
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I think this should be exposed in Value class itself. This will help other provider implementations
| * @param map map of objects | ||
| * @return a Structure object in the SDK format | ||
| */ | ||
| public static Structure mapToStructure(Map<String, Object> map) { |
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This can be exposed from MutableStructure class so that it can be commonly used where needed
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| package dev.openfeature.sdk.providers.memory; | |||
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I think this is a good package name and differentiate from contrib provider implemenations (dev.openfeature.contrib.providers.*)
| provider.updateFlags(flags); | ||
| } | ||
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| public static Map<String, Flag<?>> buildFlags() { |
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Given the public accessor status & multiple usages, I think this fits well into testutils - https://github.com/open-feature/java-sdk/tree/main/src/test/java/dev/openfeature/sdk/testutils
Probably with a class named TestFlags
| import dev.openfeature.sdk.Reason; | ||
| import dev.openfeature.sdk.Structure; | ||
| import dev.openfeature.sdk.Value; | ||
| import dev.openfeature.sdk.*; |
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Please consider avoiding wildcard imports (check other places too)
Signed-off-by: liran2000 <liran2000@gmail.com>
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| /** | ||
| * Building flags for testing purposes. | ||
| * @return |
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| * @return |
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suggesting the removal as return is not defined
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| @SneakyThrows | ||
| @Test | ||
| void mapToStructureTest() { |
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Let's move this to StructureTest
Signed-off-by: liran2000 <liran2000@gmail.com>
src/main/java/dev/openfeature/sdk/providers/memory/InMemoryProvider.java
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src/main/java/dev/openfeature/sdk/providers/memory/InMemoryProvider.java
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src/test/java/dev/openfeature/sdk/providers/memory/InMemoryProviderTest.java
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| * Building flags for testing purposes. | ||
| * @return map of flags | ||
| */ | ||
| public static Map<String, Flag<?>> buildFlags() { |
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I think this API looks pretty solid. It's what I expected. Interested in @justinabrahms @thisthat 's takes.
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Overall this looks really good, thanks @liran2000 !!
I have a few small comments, in particular this one (unless I'm missing something). Also watch out for the Javadoc stuff I mentioned to make sure people don't accidentally think some of these classes are for general SDK usage.
I think with a few small changes this can be merged!
Signed-off-by: liran2000 <liran2000@gmail.com>
src/test/java/dev/openfeature/sdk/providers/memory/InMemoryProviderTest.java
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@liran2000 don't worry about the codecov... IMHO your coverage of new code is fine, but there's an issue with one test. |
Signed-off-by: liran2000 <liran2000@gmail.com>
toddbaert
changed the title
verify emit event called on the spied provider as it verifies the config changed event was emitted, which is the in-memory provider implementation. The event itself is a functionality of the events framework, thus not needed to be tested here, Signed-off-by: liran2000 <liran2000@gmail.com>
…o feat/523-in-memory-provider
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Implementation looks good to me, and tests look stable now. Thanks again @liran2000
Approving. I will wait until EOD before merging to give others a chance to review.
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Kudos, SonarCloud Quality Gate passed!
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@liran2000 I opened a small PR to satisfy codecov: #561, and made some other minor changes I didn't notice here. |
This PR
Issue 523 - In-memory provider for e2e testing and minimal SDK usage