@dataplan/pg
Version:
PostgreSQL step classes for Grafast
54 lines • 3.04 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.PgContextPlugin = exports.EMPTY_OBJECT = void 0;
const pgServices_js_1 = require("../pgServices.js");
const version_js_1 = require("../version.js");
exports.EMPTY_OBJECT = Object.freeze(Object.create(null));
exports.PgContextPlugin = {
name: "PgContextPlugin",
description: "Extends the runtime GraphQL context with details needed to support your configured pgServices",
version: version_js_1.version,
grafast: {
middleware: {
prepareArgs(next, { args }) {
if (!args.contextValue) {
args.contextValue = Object.create(null);
}
const { resolvedPreset: config, requestContext: ctx } = args;
const contextValue = args.contextValue;
if (config?.pgServices) {
for (const pgService of config.pgServices) {
const { pgSettings, pgSettingsKey, withPgClientKey, pgSubscriberKey, pgSubscriber, } = pgService;
if (pgSettings && pgSettingsKey == null) {
throw new Error(`pgService '${pgService.name}' specifies pgSettings, but has no pgSettingsKey.`);
}
if (pgSubscriber && pgSubscriberKey == null) {
throw new Error(`pgService '${pgService.name}' specifies pgSubscriber, but has no pgSubscriberKey.`);
}
if (pgSettingsKey != null) {
if (pgSettingsKey in contextValue) {
throw new Error(`Key '${pgSettingsKey}' already set on the context; refusing to overwrite - please check your configuration.`);
}
contextValue[pgSettingsKey] =
typeof pgSettings === "function"
? pgSettings(ctx ?? exports.EMPTY_OBJECT)
: (pgSettings ?? undefined);
}
if (pgSubscriberKey != null) {
if (pgSubscriberKey in contextValue) {
throw new Error(`Key '${pgSubscriberKey}' already set on the context; refusing to overwrite - please check your configuration.`);
}
contextValue[pgSubscriberKey] = pgSubscriber;
}
if (withPgClientKey in contextValue) {
throw new Error(`Key '${withPgClientKey}' already set on the context; refusing to overwrite - please check your configuration.`);
}
contextValue[withPgClientKey] = pgServices_js_1.withPgClientFromPgService.bind(null, pgService);
}
}
return next();
},
},
},
};
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