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Adding a new API to get the current transformed pipelines as a JSON (o…
…pensearch-project#4980) * Adding a new API to get the current transformed pipelines as a JSON Signed-off-by: Souvik Bose <[email protected]> * Rename the api and address comments Signed-off-by: Souvik Bose <[email protected]> --------- Signed-off-by: Souvik Bose <[email protected]> Co-authored-by: Souvik Bose <[email protected]>
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56 changes: 56 additions & 0 deletions
56
...er-core/src/main/java/org/opensearch/dataprepper/pipeline/server/GetPipelinesHandler.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
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| package org.opensearch.dataprepper.pipeline.server; | ||
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| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import com.sun.net.httpserver.HttpExchange; | ||
| import com.sun.net.httpserver.HttpHandler; | ||
| import org.opensearch.dataprepper.model.configuration.PipelineModel; | ||
| import org.opensearch.dataprepper.pipeline.PipelinesProvider; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import javax.ws.rs.HttpMethod; | ||
| import java.io.IOException; | ||
| import java.net.HttpURLConnection; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
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| public class GetPipelinesHandler implements HttpHandler { | ||
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| private final PipelinesProvider pipelinesProvider; | ||
| private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper(); | ||
| private final Logger LOG = LoggerFactory.getLogger(GetPipelinesHandler.class); | ||
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| public GetPipelinesHandler(final PipelinesProvider pipelinesProvider) { | ||
| this.pipelinesProvider = pipelinesProvider; | ||
| } | ||
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| @Override | ||
| public void handle(final HttpExchange exchange) throws IOException { | ||
| String requestMethod = exchange.getRequestMethod(); | ||
| if (!requestMethod.equals(HttpMethod.GET)) { | ||
| exchange.sendResponseHeaders(HttpURLConnection.HTTP_BAD_METHOD, 0); | ||
| exchange.getResponseBody().close(); | ||
| return; | ||
| } | ||
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| try { | ||
| List<PipelineModel> pipelineModels = new ArrayList<>(pipelinesProvider.getPipelinesDataFlowModel().getPipelines().values()); | ||
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| final byte[] response = OBJECT_MAPPER.writeValueAsString(pipelineModels).getBytes(); | ||
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| exchange.getResponseHeaders().add("Content-Type", "text/plain; charset=UTF-8"); | ||
| exchange.sendResponseHeaders(HttpURLConnection.HTTP_OK, response.length); | ||
| exchange.getResponseBody().write(response); | ||
| } catch (final Exception e) { | ||
| LOG.error("Caught exception listing pipelines", e); | ||
| exchange.sendResponseHeaders(HttpURLConnection.HTTP_INTERNAL_ERROR, 0); | ||
| } finally { | ||
| exchange.getResponseBody().close(); | ||
| } | ||
| } | ||
| } |
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126 changes: 126 additions & 0 deletions
126
...ore/src/test/java/org/opensearch/dataprepper/pipeline/server/GetPipelinesHandlerTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
|
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| package org.opensearch.dataprepper.pipeline.server; | ||
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| import com.sun.net.httpserver.Headers; | ||
| import com.sun.net.httpserver.HttpExchange; | ||
| import org.junit.jupiter.api.BeforeEach; | ||
| import org.junit.jupiter.api.extension.ExtendWith; | ||
| import org.junit.jupiter.params.ParameterizedTest; | ||
| import org.junit.jupiter.params.provider.ValueSource; | ||
| import org.mockito.Mock; | ||
| import org.mockito.junit.jupiter.MockitoExtension; | ||
| import org.opensearch.dataprepper.model.configuration.DataPrepperVersion; | ||
| import org.opensearch.dataprepper.model.configuration.PipelineModel; | ||
| import org.opensearch.dataprepper.model.configuration.PipelinesDataFlowModel; | ||
| import org.opensearch.dataprepper.model.configuration.PluginModel; | ||
| import org.opensearch.dataprepper.model.configuration.SinkModel; | ||
| import org.opensearch.dataprepper.pipeline.PipelinesProvider; | ||
|
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| import javax.ws.rs.HttpMethod; | ||
| import java.io.IOException; | ||
| import java.io.OutputStream; | ||
| import java.net.HttpURLConnection; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
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| import static org.mockito.ArgumentMatchers.any; | ||
| import static org.mockito.ArgumentMatchers.anyLong; | ||
| import static org.mockito.ArgumentMatchers.anyString; | ||
| import static org.mockito.ArgumentMatchers.eq; | ||
| import static org.mockito.Mockito.doNothing; | ||
| import static org.mockito.Mockito.mock; | ||
| import static org.mockito.Mockito.verify; | ||
| import static org.mockito.Mockito.when; | ||
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| @ExtendWith(MockitoExtension.class) | ||
| public class GetPipelinesHandlerTest { | ||
| @Mock | ||
| private PipelinesProvider pipelinesProvider; | ||
| @Mock | ||
| private HttpExchange httpExchange; | ||
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| @Mock | ||
| private OutputStream outputStream; | ||
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| @BeforeEach | ||
| public void beforeEach() { | ||
| when(httpExchange.getResponseBody()) | ||
| .thenReturn(outputStream); | ||
| } | ||
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| private GetPipelinesHandler createObjectUnderTest() { | ||
| return new GetPipelinesHandler(pipelinesProvider); | ||
| } | ||
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| @ParameterizedTest | ||
| @ValueSource(strings = { HttpMethod.GET }) | ||
| public void testGivenPipelinesThenResponseWritten(String httpMethod) throws IOException { | ||
| final String pipelineName = "test-pipeline"; | ||
| final Headers headers = mock(Headers.class); | ||
| doNothing().when(headers).add(anyString(), anyString()); | ||
| final DataPrepperVersion version = DataPrepperVersion.parse("2.0"); | ||
| final PluginModel source = new PluginModel("testSource", (Map<String, Object>) null); | ||
| final List<PluginModel> processors = Collections.singletonList(new PluginModel("testProcessor", (Map<String, Object>) null)); | ||
| final List<SinkModel> sinks = Collections.singletonList(new SinkModel("testSink", Collections.emptyList(), null, Collections.emptyList(), Collections.emptyList(), null)); | ||
| final PipelineModel pipelineModel = new PipelineModel(source, null, processors, null, sinks, 8, 50); | ||
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| final PipelinesDataFlowModel pipelinesDataFlowModel = new PipelinesDataFlowModel(version, Collections.singletonMap(pipelineName, pipelineModel)); | ||
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| when(pipelinesProvider.getPipelinesDataFlowModel()) | ||
| .thenReturn(pipelinesDataFlowModel); | ||
| when(httpExchange.getResponseHeaders()) | ||
| .thenReturn(headers); | ||
| when(httpExchange.getRequestMethod()) | ||
| .thenReturn(httpMethod); | ||
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| final GetPipelinesHandler handler = createObjectUnderTest(); | ||
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| handler.handle(httpExchange); | ||
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| verify(headers) | ||
| .add(eq("Content-Type"), eq("text/plain; charset=UTF-8")); | ||
| verify(httpExchange) | ||
| .sendResponseHeaders(eq(HttpURLConnection.HTTP_OK), anyLong()); | ||
| verify(outputStream) | ||
| .write(any(byte[].class)); | ||
| verify(outputStream) | ||
| .close(); | ||
| } | ||
|
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| @ParameterizedTest | ||
| @ValueSource(strings = { HttpMethod.DELETE, HttpMethod.PATCH, HttpMethod.PUT, HttpMethod.POST }) | ||
| public void testGivenProhibitedHttpMethodThenErrorResponseWritten(String httpMethod) throws IOException { | ||
| final GetPipelinesHandler handler = createObjectUnderTest(); | ||
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| when(httpExchange.getRequestMethod()) | ||
| .thenReturn(httpMethod); | ||
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| handler.handle(httpExchange); | ||
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| verify(httpExchange) | ||
| .sendResponseHeaders(eq(HttpURLConnection.HTTP_BAD_METHOD), eq(0L)); | ||
| verify(outputStream) | ||
| .close(); | ||
| } | ||
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| @ParameterizedTest | ||
| @ValueSource(strings = { HttpMethod.GET }) | ||
| public void testGivenExceptionThrownThenErrorResponseWritten(String httpMethod) throws IOException { | ||
| when(httpExchange.getRequestMethod()) | ||
| .thenReturn(httpMethod); | ||
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| pipelinesProvider = null; | ||
| final GetPipelinesHandler handler = createObjectUnderTest(); | ||
| handler.handle(httpExchange); | ||
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| verify(httpExchange) | ||
| .sendResponseHeaders(eq(HttpURLConnection.HTTP_INTERNAL_ERROR), eq(0L)); | ||
| verify(outputStream) | ||
| .close(); | ||
| } | ||
| } |