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Add Token Range to Endpoints endpoint (#377)
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92 changes: 92 additions & 0 deletions
92
management-api-server/src/main/java/com/datastax/mgmtapi/resources/v2/TokenResourcesV2.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| /* | ||
| * Copyright DataStax, Inc. | ||
| * | ||
| * Please see the included license file for details. | ||
| */ | ||
| package com.datastax.mgmtapi.resources.v2; | ||
|
|
||
| import com.datastax.mgmtapi.ManagementApplication; | ||
| import com.datastax.mgmtapi.resources.common.BaseResources; | ||
| import com.datastax.mgmtapi.resources.helpers.ResponseTools; | ||
| import com.datastax.mgmtapi.resources.v2.models.TokenRangeToEndpointResponse; | ||
| import com.datastax.mgmtapi.resources.v2.models.TokenRangeToEndpoints; | ||
| import io.swagger.v3.oas.annotations.Operation; | ||
| import io.swagger.v3.oas.annotations.media.Content; | ||
| import io.swagger.v3.oas.annotations.media.ExampleObject; | ||
| import io.swagger.v3.oas.annotations.media.Schema; | ||
| import io.swagger.v3.oas.annotations.responses.ApiResponse; | ||
| import java.util.ArrayList; | ||
| import java.util.Arrays; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import javax.ws.rs.GET; | ||
| import javax.ws.rs.Path; | ||
| import javax.ws.rs.Produces; | ||
| import javax.ws.rs.QueryParam; | ||
| import javax.ws.rs.core.MediaType; | ||
| import javax.ws.rs.core.Response; | ||
|
|
||
| @Path("/api/v2/tokens") | ||
| public class TokenResourcesV2 extends BaseResources { | ||
|
|
||
| public TokenResourcesV2(ManagementApplication application) { | ||
| super(application); | ||
| } | ||
|
|
||
| @GET | ||
| @Path("/rangetoendpoint") | ||
| @Produces(MediaType.APPLICATION_JSON) | ||
| @Operation( | ||
| summary = "Retrieve a mapping of Token ranges to endpoints", | ||
| operationId = "getRangeToEndpointMapV2") | ||
| @ApiResponse( | ||
| responseCode = "200", | ||
| description = "Token range retrieval was successful", | ||
| content = | ||
| @Content( | ||
| mediaType = MediaType.APPLICATION_JSON, | ||
| schema = @Schema(implementation = TokenRangeToEndpointResponse.class))) | ||
| @ApiResponse( | ||
| responseCode = "404", | ||
| description = "Keyspace not found", | ||
| content = | ||
| @Content( | ||
| mediaType = MediaType.TEXT_PLAIN, | ||
| schema = @Schema(implementation = String.class), | ||
| examples = @ExampleObject(value = "keyspace not found"))) | ||
| public Response getRangeToEndpointMap(@QueryParam(value = "keyspaceName") String keyspaceName) { | ||
| return handle( | ||
| () -> { | ||
| if (keyspaceName != null && !keyspaceExists(keyspaceName)) { | ||
| return Response.status(Response.Status.NOT_FOUND).entity("keyspace not found").build(); | ||
| } | ||
|
|
||
| Map<List<String>, List<String>> map = | ||
| (Map<List<String>, List<String>>) | ||
| ResponseTools.getSingleRowResponse( | ||
| app.dbUnixSocketFile, | ||
| app.cqlService, | ||
| "CALL NodeOps.getRangeToEndpointMap(?)", | ||
| keyspaceName); | ||
| return Response.ok(convert(map)).build(); | ||
| }); | ||
| } | ||
|
|
||
| private TokenRangeToEndpointResponse convert(Map<List<String>, List<String>> map) { | ||
| List<TokenRangeToEndpoints> rangesToEndpoints = new ArrayList<>(map.size()); | ||
| map.entrySet() | ||
| .forEach( | ||
| (Map.Entry<List<String>, List<String>> e) -> { | ||
| rangesToEndpoints.add( | ||
| new TokenRangeToEndpoints(convertRanges(e.getKey()), e.getValue())); | ||
| }); | ||
| return new TokenRangeToEndpointResponse(rangesToEndpoints); | ||
| } | ||
|
|
||
| private List<Long> convertRanges(List<String> range) { | ||
| // each Range should be exactly 2 strings: start, end | ||
| assert range.size() == 2; | ||
| List<Long> tokenRange = Arrays.asList(Long.valueOf(range.get(0)), Long.parseLong(range.get(1))); | ||
| return tokenRange; | ||
| } | ||
| } |
55 changes: 55 additions & 0 deletions
55
.../src/main/java/com/datastax/mgmtapi/resources/v2/models/TokenRangeToEndpointResponse.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| /* | ||
| * Copyright DataStax, Inc. | ||
| * | ||
| * Please see the included license file for details. | ||
| */ | ||
| package com.datastax.mgmtapi.resources.v2.models; | ||
|
|
||
| import com.fasterxml.jackson.annotation.JsonCreator; | ||
| import com.fasterxml.jackson.annotation.JsonProperty; | ||
| import com.fasterxml.jackson.core.JsonProcessingException; | ||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import java.util.List; | ||
| import java.util.Objects; | ||
|
|
||
| public class TokenRangeToEndpointResponse { | ||
|
|
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| @JsonProperty(value = "token_range_to_endpoints", required = true) | ||
| public final List<TokenRangeToEndpoints> tokenRangeToEndpoints; | ||
|
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| @JsonCreator | ||
| public TokenRangeToEndpointResponse( | ||
| @JsonProperty(value = "token_range_to_endpoints", required = true) | ||
| List<TokenRangeToEndpoints> list) { | ||
| this.tokenRangeToEndpoints = list; | ||
| } | ||
|
|
||
| @Override | ||
| public int hashCode() { | ||
| return 83 * Objects.hashCode(tokenRangeToEndpoints); | ||
| } | ||
|
|
||
| @Override | ||
| public boolean equals(Object obj) { | ||
| if (this == obj) { | ||
| return true; | ||
| } | ||
| if (obj == null) { | ||
| return false; | ||
| } | ||
| if (getClass() != obj.getClass()) { | ||
| return false; | ||
| } | ||
| TokenRangeToEndpointResponse other = (TokenRangeToEndpointResponse) obj; | ||
| return Objects.equals(this.tokenRangeToEndpoints, other.tokenRangeToEndpoints); | ||
| } | ||
|
|
||
| @Override | ||
| public String toString() { | ||
| try { | ||
| return new ObjectMapper().writeValueAsString(this); | ||
| } catch (JsonProcessingException e) { | ||
| return String.format("Unable to format TokenRangeToEndpointResponse (%s)", e.getMessage()); | ||
| } | ||
| } | ||
| } |
62 changes: 62 additions & 0 deletions
62
...-server/src/main/java/com/datastax/mgmtapi/resources/v2/models/TokenRangeToEndpoints.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| /* | ||
| * Copyright DataStax, Inc. | ||
| * | ||
| * Please see the included license file for details. | ||
| */ | ||
| package com.datastax.mgmtapi.resources.v2.models; | ||
|
|
||
| import com.fasterxml.jackson.annotation.JsonCreator; | ||
| import com.fasterxml.jackson.annotation.JsonProperty; | ||
| import com.fasterxml.jackson.core.JsonProcessingException; | ||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import java.util.List; | ||
| import java.util.Objects; | ||
|
|
||
| public class TokenRangeToEndpoints { | ||
|
|
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| @JsonProperty(value = "tokens", required = true) | ||
| public final List<Long> tokens; | ||
|
|
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| @JsonProperty(value = "endpoints", required = true) | ||
| public final List<String> endpoints; | ||
|
|
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| @JsonCreator | ||
| public TokenRangeToEndpoints( | ||
| @JsonProperty(value = "tokens", required = true) List<Long> tokens, | ||
| @JsonProperty(value = "endpoints", required = true) List<String> endpoints) { | ||
| this.tokens = tokens; | ||
| this.endpoints = endpoints; | ||
| } | ||
|
|
||
| @Override | ||
| public boolean equals(Object obj) { | ||
| if (this == obj) { | ||
| return true; | ||
| } | ||
| if (obj == null) { | ||
| return false; | ||
| } | ||
| if (getClass() != obj.getClass()) { | ||
| return false; | ||
| } | ||
| TokenRangeToEndpoints other = (TokenRangeToEndpoints) obj; | ||
| if (!Objects.equals(this.tokens, other.tokens)) { | ||
| return false; | ||
| } | ||
| return Objects.equals(this.endpoints, other.endpoints); | ||
| } | ||
|
|
||
| @Override | ||
| public int hashCode() { | ||
| return 83 * Objects.hashCode(this.tokens) * Objects.hashCode(this.endpoints); | ||
| } | ||
|
|
||
| @Override | ||
| public String toString() { | ||
| try { | ||
| return new ObjectMapper().writeValueAsString(this); | ||
| } catch (JsonProcessingException e) { | ||
| return String.format("Unable to format TokenRangeToEndpoints (%s)", e.getMessage()); | ||
| } | ||
| } | ||
| } |
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