feat(api): update via SDK Studio

Author: stainless-app[bot]

.stats.yml

@@ -1,4 +1,4 @@
-configured_endpoints: 5
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/kernel%2Fkernel-3b19f5e2b96ede3193aa7a24d3f82d1406b8a16ea25e98ba3956e4a1a2376ad7.yml
-openapi_spec_hash: b62a6e73ddcec71674973f795a5790ac
-config_hash: df889df131f7438197abd59faace3c77
+configured_endpoints: 6
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/kernel%2Fkernel-19b0d17ba368f32827ee322d15a7f4ff7e1f3bbf66606fad227b3465f8ffc5ab.yml
+openapi_spec_hash: 4a3cb766898e8a134ef99fe6c4c87736
+config_hash: 9018b7ff17f8de1bc3e99a0ae2f2df68

api.md

@@ -5,10 +5,12 @@
 Types:
 
 - <code><a href="./src/resources/apps/deployments.ts">DeploymentCreateResponse</a></code>
+- <code><a href="./src/resources/apps/deployments.ts">DeploymentFollowResponse</a></code>
 
 Methods:
 
 - <code title="post /deploy">client.apps.deployments.<a href="./src/resources/apps/deployments.ts">create</a>({ ...params }) -> DeploymentCreateResponse</code>
+- <code title="get /apps/{id}/events">client.apps.deployments.<a href="./src/resources/apps/deployments.ts">follow</a>(id) -> DeploymentFollowResponse</code>
 
 ## Invocations
 

src/core/streaming.ts

@@ -0,0 +1,301 @@
+import { KernelError } from './error';
+import { type ReadableStream } from '../internal/shim-types';
+import { makeReadableStream } from '../internal/shims';
+import { findDoubleNewlineIndex, LineDecoder } from '../internal/decoders/line';
+import { ReadableStreamToAsyncIterable } from '../internal/shims';
+import { isAbortError } from '../internal/errors';
+import { encodeUTF8 } from '../internal/utils/bytes';
+
+type Bytes = string | ArrayBuffer | Uint8Array | null | undefined;
+
+export type ServerSentEvent = {
+  event: string | null;
+  data: string;
+  raw: string[];
+};
+
+export class Stream<Item> implements AsyncIterable<Item> {
+  controller: AbortController;
+
+  constructor(
+    private iterator: () => AsyncIterator<Item>,
+    controller: AbortController,
+  ) {
+    this.controller = controller;
+  }
+
+  static fromSSEResponse<Item>(response: Response, controller: AbortController): Stream<Item> {
+    let consumed = false;
+
+    async function* iterator(): AsyncIterator<Item, any, undefined> {
+      if (consumed) {
+        throw new KernelError('Cannot iterate over a consumed stream, use `.tee()` to split the stream.');
+      }
+      consumed = true;
+      let done = false;
+      try {
+        for await (const sse of _iterSSEMessages(response, controller)) {
+          try {
+            yield JSON.parse(sse.data);
+          } catch (e) {
+            console.error(`Could not parse message into JSON:`, sse.data);
+            console.error(`From chunk:`, sse.raw);
+            throw e;
+          }
+        }
+        done = true;
+      } catch (e) {
+        // If the user calls `stream.controller.abort()`, we should exit without throwing.
+        if (isAbortError(e)) return;
+        throw e;
+      } finally {
+        // If the user `break`s, abort the ongoing request.
+        if (!done) controller.abort();
+      }
+    }
+
+    return new Stream(iterator, controller);
+  }
+
+  /**
+   * Generates a Stream from a newline-separated ReadableStream
+   * where each item is a JSON value.
+   */
+  static fromReadableStream<Item>(readableStream: ReadableStream, controller: AbortController): Stream<Item> {
+    let consumed = false;
+
+    async function* iterLines(): AsyncGenerator<string, void, unknown> {
+      const lineDecoder = new LineDecoder();
+
+      const iter = ReadableStreamToAsyncIterable<Bytes>(readableStream);
+      for await (const chunk of iter) {
+        for (const line of lineDecoder.decode(chunk)) {
+          yield line;
+        }
+      }
+
+      for (const line of lineDecoder.flush()) {
+        yield line;
+      }
+    }
+
+    async function* iterator(): AsyncIterator<Item, any, undefined> {
+      if (consumed) {
+        throw new KernelError('Cannot iterate over a consumed stream, use `.tee()` to split the stream.');
+      }
+      consumed = true;
+      let done = false;
+      try {
+        for await (const line of iterLines()) {
+          if (done) continue;
+          if (line) yield JSON.parse(line);
+        }
+        done = true;
+      } catch (e) {
+        // If the user calls `stream.controller.abort()`, we should exit without throwing.
+        if (isAbortError(e)) return;
+        throw e;
+      } finally {
+        // If the user `break`s, abort the ongoing request.
+        if (!done) controller.abort();
+      }
+    }
+
+    return new Stream(iterator, controller);
+  }
+
+  [Symbol.asyncIterator](): AsyncIterator<Item> {
+    return this.iterator();
+  }
+
+  /**
+   * Splits the stream into two streams which can be
+   * independently read from at different speeds.
+   */
+  tee(): [Stream<Item>, Stream<Item>] {
+    const left: Array<Promise<IteratorResult<Item>>> = [];
+    const right: Array<Promise<IteratorResult<Item>>> = [];
+    const iterator = this.iterator();
+
+    const teeIterator = (queue: Array<Promise<IteratorResult<Item>>>): AsyncIterator<Item> => {
+      return {
+        next: () => {
+          if (queue.length === 0) {
+            const result = iterator.next();
+            left.push(result);
+            right.push(result);
+          }
+          return queue.shift()!;
+        },
+      };
+    };
+
+    return [
+      new Stream(() => teeIterator(left), this.controller),
+      new Stream(() => teeIterator(right), this.controller),
+    ];
+  }
+
+  /**
+   * Converts this stream to a newline-separated ReadableStream of
+   * JSON stringified values in the stream
+   * which can be turned back into a Stream with `Stream.fromReadableStream()`.
+   */
+  toReadableStream(): ReadableStream {
+    const self = this;
+    let iter: AsyncIterator<Item>;
+
+    return makeReadableStream({
+      async start() {
+        iter = self[Symbol.asyncIterator]();
+      },
+      async pull(ctrl: any) {
+        try {
+          const { value, done } = await iter.next();
+          if (done) return ctrl.close();
+
+          const bytes = encodeUTF8(JSON.stringify(value) + '\n');
+
+          ctrl.enqueue(bytes);
+        } catch (err) {
+          ctrl.error(err);
+        }
+      },
+      async cancel() {
+        await iter.return?.();
+      },
+    });
+  }
+}
+
+export async function* _iterSSEMessages(
+  response: Response,
+  controller: AbortController,
+): AsyncGenerator<ServerSentEvent, void, unknown> {
+  if (!response.body) {
+    controller.abort();
+    if (
+      typeof (globalThis as any).navigator !== 'undefined' &&
+      (globalThis as any).navigator.product === 'ReactNative'
+    ) {
+      throw new KernelError(
+        `The default react-native fetch implementation does not support streaming. Please use expo/fetch: https://docs.expo.dev/versions/latest/sdk/expo/#expofetch-api`,
+      );
+    }
+    throw new KernelError(`Attempted to iterate over a response with no body`);
+  }
+
+  const sseDecoder = new SSEDecoder();
+  const lineDecoder = new LineDecoder();
+
+  const iter = ReadableStreamToAsyncIterable<Bytes>(response.body);
+  for await (const sseChunk of iterSSEChunks(iter)) {
+    for (const line of lineDecoder.decode(sseChunk)) {
+      const sse = sseDecoder.decode(line);
+      if (sse) yield sse;
+    }
+  }
+
+  for (const line of lineDecoder.flush()) {
+    const sse = sseDecoder.decode(line);
+    if (sse) yield sse;
+  }
+}
+
+/**
+ * Given an async iterable iterator, iterates over it and yields full
+ * SSE chunks, i.e. yields when a double new-line is encountered.
+ */
+async function* iterSSEChunks(iterator: AsyncIterableIterator<Bytes>): AsyncGenerator<Uint8Array> {
+  let data = new Uint8Array();
+
+  for await (const chunk of iterator) {
+    if (chunk == null) {
+      continue;
+    }
+
+    const binaryChunk =
+      chunk instanceof ArrayBuffer ? new Uint8Array(chunk)
+      : typeof chunk === 'string' ? encodeUTF8(chunk)
+      : chunk;
+
+    let newData = new Uint8Array(data.length + binaryChunk.length);
+    newData.set(data);
+    newData.set(binaryChunk, data.length);
+    data = newData;
+
+    let patternIndex;
+    while ((patternIndex = findDoubleNewlineIndex(data)) !== -1) {
+      yield data.slice(0, patternIndex);
+      data = data.slice(patternIndex);
+    }
+  }
+
+  if (data.length > 0) {
+    yield data;
+  }
+}
+
+class SSEDecoder {
+  private data: string[];
+  private event: string | null;
+  private chunks: string[];
+
+  constructor() {
+    this.event = null;
+    this.data = [];
+    this.chunks = [];
+  }
+
+  decode(line: string) {
+    if (line.endsWith('\r')) {
+      line = line.substring(0, line.length - 1);
+    }
+
+    if (!line) {
+      // empty line and we didn't previously encounter any messages
+      if (!this.event && !this.data.length) return null;
+
+      const sse: ServerSentEvent = {
+        event: this.event,
+        data: this.data.join('\n'),
+        raw: this.chunks,
+      };
+
+      this.event = null;
+      this.data = [];
+      this.chunks = [];
+
+      return sse;
+    }
+
+    this.chunks.push(line);
+
+    if (line.startsWith(':')) {
+      return null;
+    }
+
+    let [fieldname, _, value] = partition(line, ':');
+
+    if (value.startsWith(' ')) {
+      value = value.substring(1);
+    }
+
+    if (fieldname === 'event') {
+      this.event = value;
+    } else if (fieldname === 'data') {
+      this.data.push(value);
+    }
+
+    return null;
+  }
+}
+
+function partition(str: string, delimiter: string): [string, string, string] {
+  const index = str.indexOf(delimiter);
+  if (index !== -1) {
+    return [str.substring(0, index), delimiter, str.substring(index + delimiter.length)];
+  }
+
+  return [str, '', ''];
+}