Implement the api key provider (#3)

This implementation proxies the requests to Anaconda's api key endpoint
making the appropriate translations in request and response types

Author: intentionally-left-nil

.npmrc

@@ -1,3 +1,3 @@
 //npm.pkg.github.com/:_authToken=${NODE_AUTH_TOKEN}
-@runtimed:registry=https://npm.pkg.github.com/
-always-auth=true
+@runtimed/anaconda:registry=https://npm.pkg.github.com/
+always-auth=false

package-lock.json

@@ -33,10 +33,14 @@
     "build": "npx tsc"
   },
   "dependencies": {
-    "@runtimed/extensions": "^0.2.0"
+    "@runtimed/extensions": "^0.3.0",
+    "jose": "^6.0.12"
   },
   "devDependencies": {
     "prettier": "^3.6.2",
     "typescript": "^5.9.2"
+  },
+  "peerDependencies": {
+    "@cloudflare/workers-types": "^4.20250813.0"
   }
 }

package.json

@@ -0,0 +1,318 @@
+import {
+  AuthType,
+  ErrorType,
+  RuntError,
+  Scope,
+  type ProviderContext,
+  type AuthenticatedProviderContext,
+  type Passport,
+} from '@runtimed/extensions';
+import {
+  ApiKeyCapabilities,
+  ApiKeyProvider,
+  type CreateApiKeyRequest,
+  type ApiKey,
+  type ListApiKeysRequest,
+} from '@runtimed/extensions/providers/api_key';
+import * as jose from 'jose';
+
+type ExtensionConfig = {
+  apiKeyUrl: string;
+  userinfoUrl: string;
+};
+
+type AnacondaWhoamiResponse = {
+  passport: {
+    user_id: string;
+    profile: {
+      email: string;
+      first_name: string;
+      last_name: string;
+      is_confirmed: boolean;
+    };
+    scopes: string[];
+    source: string;
+  };
+};
+type AnacondaCreateApiKeyRequest = {
+  scopes: string[];
+  user_created: boolean;
+  name: string;
+  tags: string[];
+  expires_at: string;
+};
+
+type AnacondaCreateApiKeyResponse = {
+  id: string;
+  api_key: string;
+  expires_at: string;
+};
+
+type AnacondaGetApiKeyResponse = {
+  id: string;
+  name: string;
+  user_created: boolean;
+  tags: string[];
+  scopes: string[];
+  created_at: string;
+  expires_at: string;
+};
+
+const getExtensionConfig = (context: ProviderContext): ExtensionConfig => {
+  let config: ExtensionConfig;
+  if (!context.env.EXTENSION_CONFIG) {
+    throw new RuntError(ErrorType.ServerMisconfigured, {
+      message: 'The EXTENSION_CONFIG environment variable is not properly set',
+    });
+  }
+  try {
+    config = JSON.parse(context.env.EXTENSION_CONFIG) as ExtensionConfig;
+  } catch (error) {
+    throw new RuntError(ErrorType.ServerMisconfigured, {
+      message: 'The EXTENSION_CONFIG environment variable is not properly set',
+      cause: error as Error,
+    });
+  }
+  if (!config.apiKeyUrl || !config.userinfoUrl) {
+    throw new RuntError(ErrorType.ServerMisconfigured, {
+      message: 'The EXTENSION_CONFIG environment variable is missing required fields',
+    });
+  }
+  return config;
+};
+
+function createFailureHandler(url: string) {
+  return (err: unknown) => {
+    throw new RuntError(ErrorType.Unknown, {
+      message: `Failed to fetch from ${url}`,
+      cause: err as Error,
+    });
+  };
+}
+
+async function handleAnacondaResponse<T>(response: Response): Promise<T> {
+  let body: string;
+  try {
+    body = await response.text();
+  } catch (error) {
+    throw new RuntError(ErrorType.Unknown, {
+      message: `Failed to get the body from ${response.url}`,
+      cause: error as Error,
+    });
+  }
+  if (response.status === 400) {
+    throw new RuntError(ErrorType.InvalidRequest, {
+      message: 'Invalid request',
+      responsePayload: {
+        upstreamCode: response.status,
+      },
+      debugPayload: {
+        upstreamBody: body,
+      },
+    });
+  }
+  if (response.status === 401) {
+    throw new RuntError(ErrorType.AuthTokenInvalid, {
+      responsePayload: {
+        upstreamCode: response.status,
+      },
+      debugPayload: {
+        upstreamBody: body,
+      },
+    });
+  }
+  if (response.status === 403) {
+    throw new RuntError(ErrorType.AccessDenied, {
+      responsePayload: {
+        upstreamCode: response.status,
+      },
+      debugPayload: {
+        upstreamBody: body,
+      },
+    });
+  }
+  if (response.status === 404) {
+    throw new RuntError(ErrorType.NotFound, {
+      responsePayload: {
+        upstreamCode: response.status,
+      },
+      debugPayload: {
+        upstreamBody: body,
+      },
+    });
+  }
+  if (!response.ok) {
+    throw new RuntError(ErrorType.Unknown, {
+      responsePayload: {
+        upstreamCode: response.status,
+      },
+      debugPayload: {
+        upstreamBody: body,
+      },
+    });
+  }
+  if (response.status === 204) {
+    return undefined as T;
+  }
+  try {
+    return JSON.parse(body) as T;
+  } catch (error) {
+    throw new RuntError(ErrorType.Unknown, {
+      message: 'Invalid JSON response',
+      responsePayload: {
+        upstreamCode: response.status,
+      },
+    });
+  }
+}
+
+const anacondaToRuntScopes = (scopes: string[]): Scope[] => {
+  let result: Scope[] = [];
+  for (const scope of scopes) {
+    if (scope === 'cloud:read') {
+      result.push(Scope.RuntRead);
+    }
+    if (scope === 'cloud:write') {
+      result.push(Scope.RuntExecute);
+    }
+  }
+  return result;
+};
+
+const anacondaToRuntApiKey = (
+  id: string,
+  context: AuthenticatedProviderContext,
+  anacondaResponse: AnacondaGetApiKeyResponse
+): ApiKey => {
+  return {
+    id,
+    userId: context.passport.user.id,
+    name: anacondaResponse.name,
+    scopes: anacondaToRuntScopes(anacondaResponse.scopes),
+    expiresAt: anacondaResponse.expires_at,
+    userGenerated: anacondaResponse.user_created,
+    revoked: false,
+  };
+};
+
+const provider: ApiKeyProvider = {
+  capabilities: new Set([ApiKeyCapabilities.Delete]),
+  isApiKey: (context: ProviderContext): boolean => {
+    if (!context.bearerToken) {
+      return false;
+    }
+    const unverified = jose.decodeJwt(context.bearerToken);
+    return unverified.ver === 'api:1';
+  },
+  validateApiKey: async (context: ProviderContext): Promise<Passport> => {
+    if (!context.bearerToken) {
+      throw new RuntError(ErrorType.MissingAuthToken);
+    }
+    const config = getExtensionConfig(context);
+    const whoami: AnacondaWhoamiResponse = await fetch(config.userinfoUrl, {
+      headers: {
+        Authorization: `Bearer ${context.bearerToken}`,
+      },
+    })
+      .catch(createFailureHandler(config.userinfoUrl))
+      .then(handleAnacondaResponse<AnacondaWhoamiResponse>);
+
+    if (whoami.passport.source !== 'api_key') {
+      throw new RuntError(ErrorType.AuthTokenInvalid, {
+        message: 'Non api key used',
+        debugPayload: {
+          upstreamCode: 401,
+          upstreamBody: whoami,
+        },
+      });
+    }
+
+    let scopes: Scope[] = anacondaToRuntScopes(whoami.passport.scopes);
+    return {
+      type: AuthType.ApiKey,
+      user: {
+        id: whoami.passport.user_id,
+        email: whoami.passport.profile.email,
+        givenName: whoami.passport.profile.first_name,
+        familyName: whoami.passport.profile.last_name,
+      },
+      claims: jose.decodeJwt(context.bearerToken),
+      scopes,
+      resources: null,
+    };
+  },
+  createApiKey: async (context: AuthenticatedProviderContext, request: CreateApiKeyRequest): Promise<string> => {
+    const config = getExtensionConfig(context);
+    const scopeMapping: Record<Scope, string> = {
+      [Scope.RuntRead]: 'cloud:read',
+      [Scope.RuntExecute]: 'cloud:write',
+    };
+
+    const requestBody: AnacondaCreateApiKeyRequest = {
+      scopes: request.scopes.map(scope => scopeMapping[scope]),
+      user_created: request.userGenerated,
+      name: request.name ?? 'runt-api-key',
+      tags: ['runt'],
+      expires_at: request.expiresAt,
+    };
+    let result: AnacondaCreateApiKeyResponse = await fetch(config.apiKeyUrl, {
+      method: 'POST',
+      body: JSON.stringify(requestBody),
+      headers: {
+        'Content-Type': 'application/json',
+        Authorization: `Bearer ${context.bearerToken}`,
+      },
+    })
+      .catch(createFailureHandler(config.apiKeyUrl))
+      .then(handleAnacondaResponse<AnacondaCreateApiKeyResponse>);
+    return result.api_key;
+  },
+  getApiKey: async (context: AuthenticatedProviderContext, id: string): Promise<ApiKey> => {
+    // Anaconda's API auth doesn't have an endpoint to get a single api key
+    // Instead, we have to list all of them and then filter out the correct one
+    const config = getExtensionConfig(context);
+    const result: AnacondaGetApiKeyResponse[] = await fetch(config.apiKeyUrl, {
+      headers: {
+        Authorization: `Bearer ${context.bearerToken}`,
+      },
+    })
+      .catch(createFailureHandler(config.apiKeyUrl))
+      .then(handleAnacondaResponse<AnacondaGetApiKeyResponse[]>);
+    const match = result.find(r => r.id === id);
+    if (!match) {
+      throw new RuntError(ErrorType.NotFound, {
+        message: 'Api key not found',
+      });
+    }
+    return anacondaToRuntApiKey(id, context, match);
+  },
+  listApiKeys: async (context: AuthenticatedProviderContext, request: ListApiKeysRequest): Promise<ApiKey[]> => {
+    const config = getExtensionConfig(context);
+    const result: AnacondaGetApiKeyResponse[] = await fetch(config.apiKeyUrl, {
+      headers: {
+        Authorization: `Bearer ${context.bearerToken}`,
+      },
+    })
+      .catch(createFailureHandler(config.apiKeyUrl))
+      .then(handleAnacondaResponse<AnacondaGetApiKeyResponse[]>);
+    return result.map(r => anacondaToRuntApiKey(r.id, context, r));
+  },
+  revokeApiKey: async (_context: AuthenticatedProviderContext, _id: string): Promise<void> => {
+    throw new RuntError(ErrorType.CapabilityNotAvailable, {
+      message: 'revoke capability is not supported',
+    });
+  },
+  deleteApiKey: async (context: AuthenticatedProviderContext, id: string): Promise<void> => {
+    const config = getExtensionConfig(context);
+    await fetch(`${config.apiKeyUrl}/${id}`, {
+      method: 'DELETE',
+      headers: {
+        Authorization: `Bearer ${context.bearerToken}`,
+      },
+    })
+      .catch(createFailureHandler(config.apiKeyUrl))
+      .then(handleAnacondaResponse<void>);
+  },
+};
+
+export default provider;

src/api_key.ts

@@ -1,4 +1,7 @@
 import { BackendExtension } from '@runtimed/extensions';
+import apiKeyProvider from './api_key';
 
-const extension: BackendExtension = {};
+const extension: BackendExtension = {
+  apiKey: apiKeyProvider,
+};
 export default extension;