mirror of
https://github.com/Azure/cosmos-explorer.git
synced 2024-11-24 22:46:40 +00:00
280 lines
10 KiB
TypeScript
280 lines
10 KiB
TypeScript
/// <reference types="node" />
|
|
import { writeFileSync } from "fs";
|
|
import mkdirp from "mkdirp";
|
|
import fetch from "node-fetch";
|
|
import * as path from "path";
|
|
|
|
/*
|
|
Open API TypeScript Client Generator
|
|
|
|
This is a bespoke Open API client generator not intended for general public use.
|
|
It is not designed to handle the full OpenAPI spec.
|
|
Many other more general purpose generators exist, but their output is very verbose and overly complex for our use case.
|
|
But it does work well enough to generate a fully typed tree-shakeable client for the Cosmos resource provider.
|
|
Results of this file should be checked into the repo.
|
|
*/
|
|
|
|
// Array of strings to use for eventual output
|
|
const outputTypes: string[] = [""];
|
|
const version = "2020-04-01";
|
|
const schemaURL = `https://raw.githubusercontent.com/Azure/azure-rest-api-specs/master/specification/cosmos-db/resource-manager/Microsoft.DocumentDB/stable/${version}/cosmos-db.json`;
|
|
|
|
const outputDir = path.join(__dirname, `../../src/Utils/arm/generatedClients/${version}`);
|
|
mkdirp.sync(outputDir);
|
|
|
|
// Buckets for grouping operations based on their name
|
|
interface Client {
|
|
paths: string[];
|
|
functions: string[];
|
|
constructorParams: string[];
|
|
}
|
|
const clients: { [key: string]: Client } = {};
|
|
|
|
// Mapping for OpenAPI types to TypeScript types
|
|
const propertyMap: { [key: string]: string } = {
|
|
integer: "number"
|
|
};
|
|
|
|
// Converts a Open API reference: "#/definitions/Foo" to a type name: Foo
|
|
function refToType(path: string | undefined, namespace?: string) {
|
|
// References must be in the same file. Bail to `unknown` types for remote references
|
|
if (path && path.startsWith("#")) {
|
|
const type = path.split("/").pop();
|
|
return namespace ? `${namespace}.${type}` : type;
|
|
}
|
|
return "unknown";
|
|
}
|
|
|
|
// Converts "Something_Foo" -> "somethingFoo"
|
|
function camelize(str: string) {
|
|
return str
|
|
.replace(/(?:^\w|[A-Z]|\b\w)/g, (word: string, index: number) => {
|
|
return index === 0 ? word.toLowerCase() : word.toUpperCase();
|
|
})
|
|
.replace(/\s+/g, "");
|
|
}
|
|
|
|
// Converts a body paramter to the equivalent typescript function parameter type
|
|
function bodyParam(parameter: { schema: { $ref: string } }, namespace: string) {
|
|
if (!parameter) {
|
|
return "";
|
|
}
|
|
return `,body: ${refToType(parameter.schema.$ref, namespace)}`;
|
|
}
|
|
|
|
// eslint-disable-next-line @typescript-eslint/no-explicit-any
|
|
function parametersFromPath(path: string) {
|
|
// TODO: Remove any. String.matchAll is a real thing.
|
|
// eslint-disable-next-line @typescript-eslint/no-explicit-any
|
|
const matches = (path as any).matchAll(/{(\w+)}/g);
|
|
return Array.from(matches).map((match: string[]) => match[1]);
|
|
}
|
|
|
|
type Operation = { responses: { [key: string]: { schema: { $ref: string } } } };
|
|
|
|
// Converts OpenAPI response definition to TypeScript return type. Uses unions if possible. Bails to unknown
|
|
function responseType(operation: Operation, namespace: string) {
|
|
if (operation.responses) {
|
|
return Object.keys(operation.responses)
|
|
.map((responseCode: string) => {
|
|
if (!operation.responses[responseCode].schema) {
|
|
return "void";
|
|
}
|
|
return refToType(operation.responses[responseCode].schema.$ref, namespace);
|
|
})
|
|
.filter((value, index, array) => array.indexOf(value) === index)
|
|
.join(" | ");
|
|
}
|
|
return "unknown";
|
|
}
|
|
|
|
interface Property {
|
|
$ref?: string;
|
|
description?: string;
|
|
readOnly?: boolean;
|
|
type: "array" | "object" | "unknown";
|
|
properties: Property[];
|
|
items?: {
|
|
$ref: string;
|
|
};
|
|
allOf?: {
|
|
$ref: string;
|
|
}[];
|
|
}
|
|
|
|
const propertyToType = (property: Property, prop: string, required: boolean) => {
|
|
if (property) {
|
|
if (property.allOf) {
|
|
outputTypes.push(`
|
|
/* ${property.description || "undocumented"} */
|
|
${property.readOnly ? "readonly " : ""}${prop}${
|
|
required ? "" : "?"
|
|
}: ${property.allOf.map((allof: { $ref: string }) => refToType(allof.$ref)).join(" & ")}`);
|
|
} else if (property.$ref) {
|
|
const type = refToType(property.$ref);
|
|
outputTypes.push(`
|
|
/* ${property.description || "undocumented"} */
|
|
${property.readOnly ? "readonly " : ""}${prop}${required ? "" : "?"}: ${type}
|
|
`);
|
|
} else if (property.type === "array") {
|
|
const type = refToType(property.items.$ref);
|
|
outputTypes.push(`
|
|
/* ${property.description || "undocumented"} */
|
|
${property.readOnly ? "readonly " : ""}${prop}${required ? "" : "?"}: ${type}[]
|
|
`);
|
|
} else if (property.type === "object") {
|
|
const type = refToType(property.$ref);
|
|
outputTypes.push(`
|
|
/* ${property.description || "undocumented"} */
|
|
${property.readOnly ? "readonly " : ""}${prop}${required ? "" : "?"}: ${type}
|
|
`);
|
|
} else {
|
|
if (property.type === undefined) {
|
|
console.log(`UHANDLED TYPE: ${prop}. Falling back to unknown`);
|
|
property.type = "unknown";
|
|
}
|
|
outputTypes.push(`
|
|
/* ${property.description || "undocumented"} */
|
|
${property.readOnly ? "readonly " : ""}${prop}${required ? "" : "?"}: ${
|
|
propertyMap[property.type] ? propertyMap[property.type] : property.type
|
|
}`);
|
|
}
|
|
}
|
|
};
|
|
|
|
async function main() {
|
|
const response = await fetch(schemaURL);
|
|
const schema = await response.json();
|
|
|
|
// STEP 1: Convert all definitions to TypeScript types and interfaces
|
|
for (const definition in schema.definitions) {
|
|
const properties = schema.definitions[definition].properties;
|
|
if (properties) {
|
|
outputTypes.push(`
|
|
/* ${schema.definitions[definition].description || "undocumented"} */
|
|
`);
|
|
if (schema.definitions[definition].allOf) {
|
|
const baseTypes = schema.definitions[definition].allOf
|
|
.map((allof: { $ref: string }) => refToType(allof.$ref))
|
|
.join(" & ");
|
|
outputTypes.push(`export type ${definition} = ${baseTypes} & {`);
|
|
} else {
|
|
outputTypes.push(`export interface ${definition} {`);
|
|
}
|
|
if (definition === "SqlDatabaseGetProperties") {
|
|
console.log(schema.definitions[definition]);
|
|
}
|
|
for (const prop in schema.definitions[definition].properties) {
|
|
const property = schema.definitions[definition].properties[prop];
|
|
propertyToType(property, prop, schema.definitions[definition].required?.includes(prop));
|
|
}
|
|
outputTypes.push(`}`);
|
|
outputTypes.push("\n\n");
|
|
} else {
|
|
const def = schema.definitions[definition];
|
|
if (def.enum) {
|
|
outputTypes.push(`
|
|
/* ${def.description || "undocumented"} */
|
|
export type ${definition} = ${def.enum.map((v: string) => `"${v}"`).join(" | ")}`);
|
|
outputTypes.push("\n");
|
|
} else if (def.type === "string") {
|
|
outputTypes.push(`
|
|
/* ${def.description || "undocumented"} */
|
|
export type ${definition} = string
|
|
`);
|
|
} else if (def.type === "array") {
|
|
const type = refToType(def.items.$ref);
|
|
outputTypes.push(`
|
|
/* ${def.description || "undocumented"} */
|
|
export type ${definition} = ${type}[]
|
|
`);
|
|
} else if (def.type === "object" && def.additionalProperties) {
|
|
outputTypes.push(`
|
|
/* ${def.description || "undocumented"} */
|
|
export type ${definition} = { [key: string]: ${def.additionalProperties.type}}
|
|
`);
|
|
} else if (def.type === "object" && def.allOf) {
|
|
const type = refToType(def.allOf[0].$ref);
|
|
outputTypes.push(`
|
|
/* ${def.description} */
|
|
export type ${definition} = ${type}
|
|
`);
|
|
} else {
|
|
console.log("UNHANDLED MODEL:", def, schema.definitions[def]);
|
|
}
|
|
}
|
|
}
|
|
|
|
// STEP 2: Group all paths by output client and extract common constructor parameters
|
|
// Functions are grouped into clients based on operation name
|
|
for (const path in schema.paths) {
|
|
for (const method in schema.paths[path]) {
|
|
const operation = schema.paths[path][method];
|
|
const [namespace] = operation.operationId.split("_");
|
|
if (clients[namespace] === undefined) {
|
|
clients[namespace] = { paths: [], functions: [], constructorParams: [] };
|
|
clients[namespace];
|
|
}
|
|
if (!clients[namespace].paths.includes(path)) {
|
|
clients[namespace].paths.push(path);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Write all grouped fetch functions to objects
|
|
for (const clientName in clients) {
|
|
const outputClient: string[] = [""];
|
|
outputClient.push(`import { armRequest } from "../../request"\n`);
|
|
outputClient.push(`import * as Types from "./types"\n`);
|
|
outputClient.push(`import { configContext } from "../../../../ConfigContext";\n`);
|
|
outputClient.push(`const apiVersion = "${version}"\n\n`);
|
|
for (const path of clients[clientName].paths) {
|
|
for (const method in schema.paths[path]) {
|
|
const operation = schema.paths[path][method];
|
|
const [, methodName] = operation.operationId.split("_");
|
|
const bodyParameter = operation.parameters.find(
|
|
(parameter: { in: string; required: boolean }) => parameter.in === "body" && parameter.required === true
|
|
);
|
|
outputClient.push(`
|
|
/* ${operation.description || "undocumented"} */
|
|
export async function ${sanitize(camelize(methodName))} (
|
|
${parametersFromPath(path)
|
|
.map(p => `${p}: string`)
|
|
.join(",\n")}
|
|
${bodyParam(bodyParameter, "Types")}
|
|
) : Promise<${responseType(operation, "Types")}> {
|
|
const path = \`${path.replace(/{/g, "${")}\`
|
|
return armRequest({ host: configContext.ARM_ENDPOINT, path, method: "${method.toLocaleUpperCase()}", apiVersion, ${
|
|
bodyParameter ? "body" : ""
|
|
} })
|
|
}
|
|
`);
|
|
}
|
|
}
|
|
writeOutputFile(`./${camelize(clientName)}.ts`, outputClient);
|
|
}
|
|
|
|
writeOutputFile("./types.ts", outputTypes);
|
|
}
|
|
|
|
function sanitize(name: string) {
|
|
if (name === "delete") {
|
|
return "destroy";
|
|
}
|
|
return name;
|
|
}
|
|
|
|
function writeOutputFile(outputPath: string, components: string[]) {
|
|
components.unshift(`/*
|
|
AUTOGENERATED FILE
|
|
Do not manually edit
|
|
Run "npm run generateARMClients" to regenerate
|
|
*/\n\n`);
|
|
writeFileSync(path.join(outputDir, outputPath), components.join(""));
|
|
}
|
|
|
|
main().catch(e => {
|
|
console.error(e);
|
|
process.exit(1);
|
|
});
|