instamancer
Version:
Scrape the Instagram API with Puppeteer
916 lines • 64.9 kB
JavaScript
"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Instagram = void 0;
const await_lock_1 = __importDefault(require("await-lock"));
const chalk_1 = __importDefault(require("chalk"));
const Either_1 = require("fp-ts/lib/Either");
const PathReporter_1 = require("io-ts/lib/PathReporter");
const ThrowReporter_1 = require("io-ts/lib/ThrowReporter");
const _ = __importStar(require("lodash/object"));
const puppeteer_1 = require("puppeteer");
const winston = __importStar(require("winston"));
const plugins_1 = require("../../plugins");
const postIdSet_1 = require("./postIdSet");
/**
* Instagram API wrapper
*/
class Instagram {
/**
* Create API wrapper instance
* @param endpoint the url for the type of resource to scrape
* @param id the identifier for the resource
* @param pageQuery the query to identify future pages in the nested API structure
* @param edgeQuery the query to identify posts in the nested API structure
* @param options configuration details
* @param validator response type validator
*/
constructor(endpoint, id, pageQuery, edgeQuery, options = {}, validator) {
// Iteration state
this.started = false;
this.paused = false;
this.finished = false;
// Instagram URLs
this.catchURL = "https://www.instagram.com/graphql/query";
this.postURL = "https://www.instagram.com/p/";
this.defaultPostURL = "https://www.instagram.com/p/";
// Number of jumps before grafting
this.jumpMod = 100;
// Depth of jumps
this.jumpSize = 2;
// Implementation-specific page functions
this.defaultPageFunctions = [];
// Validations
this.strict = false;
this.browserDisconnected = true;
// Array of scraped posts and lock
this.postBuffer = [];
this.postBufferLock = new await_lock_1.default();
// Request and Response buffers and locks
this.requestBuffer = [];
this.requestBufferLock = new await_lock_1.default();
this.responseBuffer = [];
this.responseBufferLock = new await_lock_1.default();
// Get full amount of data from API
this.fullAPI = false;
this.pagePromises = [];
// Grafting state
this.enableGrafting = true;
this.sameBrowser = false;
this.graft = false;
this.graftURL = null;
this.graftHeaders = null;
this.foundGraft = false;
// Hibernation due to rate limiting
this.hibernate = false;
this.hibernationTime = 60 * 20; // 20 minutes
// Number of jumps before exiting because lack of data
this.failedJumps = 20;
this.responseFromAPI = false;
this.index = 0;
this.jumps = 0;
// Number of times to attempt to visit url initially
this.maxPageUrlAttempts = 3;
this.pageUrlAttempts = 0;
this.postPageRetries = 5;
// Output
this.silent = false;
this.writeLock = new await_lock_1.default();
// Sleep time remaining
this.sleepRemaining = 0;
// Length of time to sleep for
this.sleepTime = 2;
// Plugins to be run
this.pluginFunctions = {
browser: [],
construction: [],
grafting: [],
postPage: [],
request: [],
response: [],
};
this.id = id;
this.postIds = new postIdSet_1.PostIdSet();
this.url = endpoint.replace("[id]", id);
options = Instagram.defaultOptions(options);
this.total = options.total;
this.pageQuery = pageQuery;
this.edgeQuery = edgeQuery;
this.browserInstance = options.browserInstance;
this.headless = options.headless;
this.logger = options.logger;
this.silent = options.silent;
this.strict = options.strict;
this.enableGrafting = options.enableGrafting;
this.sameBrowser = options.sameBrowser;
this.sleepTime = options.sleepTime;
this.hibernationTime = options.hibernationTime;
this.fullAPI = options.fullAPI;
this.proxyURL = options.proxyURL;
this.executablePath = options.executablePath;
this.validator = options.validator || validator;
this.addPlugins(options["plugins"]);
this.executePlugins("construction");
}
/**
* Apply defaults to undefined options
*/
static defaultOptions(options) {
if (options.enableGrafting === undefined) {
options.enableGrafting = true;
}
if (options.sameBrowser === undefined) {
options.sameBrowser = false;
}
if (options.fullAPI === undefined) {
options.fullAPI = false;
}
if (options.headless === undefined) {
options.headless = true;
}
if (options.logger === undefined) {
options.logger = winston.createLogger({
silent: true,
});
}
if (options.silent === undefined) {
options.silent = true;
}
if (options.sleepTime === undefined) {
options.sleepTime = 2;
}
if (options.hibernationTime === undefined) {
options.hibernationTime = 60 * 20;
}
if (options.total === undefined) {
options.total = 0;
}
return options;
}
/**
* Toggle pausing data collection
*/
pause() {
this.paused = !this.paused;
}
/**
* Toggle prolonged pausing
*/
toggleHibernation() {
this.hibernate = true;
}
/**
* Force the API to stop
*/
async forceStop(force) {
if (!force && !this.started) {
return;
}
this.started = false;
this.finish(FinishedReasons.FORCED_STOP);
try {
this.requestBufferLock.release();
// tslint:disable-next-line: no-empty
}
catch (e) { }
try {
this.responseBufferLock.release();
// tslint:disable-next-line: no-empty
}
catch (e) { }
await this.stop();
}
/**
* Generator of posts on page
*/
async *generator() {
// Start if haven't done so already
if (!this.started) {
await this.start();
}
while (true) {
// Get more posts
await this.getNext();
// Yield posts from buffer
let post = await this.postPop();
while (post) {
yield post;
post = await this.postPop();
}
// End loop when finished, check for pagePromises if fullAPI
if (this.finished && this.pagePromises.length === 0) {
break;
}
}
await this.stop();
// Add newline to end of output
if (!this.silent) {
process.stdout.write("\n");
}
}
/**
* Construct page and add listeners
*/
async start() {
let pageConstructed;
this.pageUrlAttempts = 0;
while (this.pageUrlAttempts++ < this.maxPageUrlAttempts) {
pageConstructed = await this.constructPage();
if (pageConstructed) {
break;
}
}
if (!pageConstructed) {
await this.forceStop(true);
throw new Error("Failed to visit URL");
}
// Build page and visit url
await this.executePlugins("browser");
this.started = true;
// Add event listeners for requests and responses
await this.page.setRequestInterception(true);
this.page.on("request", (req) => this.interceptRequest(req));
this.page.on("response", (res) => this.interceptResponse(res));
this.page.on("requestfailed", (res) => this.interceptFailure(res));
this.page.on("console", (message) => this.logger.info("Console log", { message }));
// Ignore dialog boxes
this.page.on("dialog", (dialog) => dialog.dismiss());
// Log errors
/* istanbul ignore next */
this.page.on("error", (error) => this.logger.error("Console error", { error }));
// Gather initial posts from web page
if (this.fullAPI) {
await this.scrapeDefaultPosts();
}
}
/**
* Match the url to the url used in API requests
*/
matchURL(url) {
return url.startsWith(this.catchURL) && !url.includes("include_reel");
}
/**
* Close the page and browser
*/
async stop() {
await this.progress(Progress.CLOSING);
// Remove listeners
if (!this.page.isClosed()) {
this.page.removeAllListeners("request");
this.page.removeAllListeners("response");
this.page.removeAllListeners("requestfailed");
}
// Clear request buffers
await this.requestBufferLock.acquireAsync();
this.requestBuffer = [];
this.requestBufferLock.release();
// Clear response buffers
await this.responseBufferLock.acquireAsync();
this.responseBuffer = [];
this.responseBufferLock.release();
// Close page
if (!this.page.isClosed()) {
await this.page.close();
}
if (this.finished &&
!this.browserDisconnected &&
!this.browserInstance) {
await this.browser.close();
}
}
/**
* Finish retrieving data for the generator
*/
finish(reason) {
this.finished = true;
this.finishedReason = reason;
this.logger.info("Finished collecting", { reason });
}
/**
* Process the requests in the request buffer
*/
async processRequests() {
await this.requestBufferLock.acquireAsync();
let newApiRequest = false;
for (const req of this.requestBuffer) {
// Match url
if (!this.matchURL(req.url())) {
continue;
}
else {
newApiRequest = true;
}
// Begin grafting if required, else continue the request
if (this.graft) {
if (this.foundGraft === false) {
// Gather details
this.graftURL = req.url();
this.graftHeaders = req.headers();
this.foundGraft = true;
// Cancel request
await req.abort();
}
else {
// Swap request
const overrides = {
headers: this.graftHeaders,
url: this.graftURL,
};
await this.executePlugins("request", req, overrides);
await req.continue(overrides);
// Reset grafting data
this.graft = false;
this.foundGraft = false;
this.graftURL = null;
this.graftHeaders = null;
}
// Stop reading requests
break;
}
else {
const overrides = {};
this.executePlugins("request", req, overrides);
await req.continue(overrides);
}
}
// Clear buffer and release
this.requestBuffer = [];
this.requestBufferLock.release();
if (this.foundGraft && newApiRequest) {
// Restart browser and page, clearing all buffers
await this.stop();
await this.start();
}
}
/**
* Process the responses in the response buffer
*/
async processResponses() {
await this.responseBufferLock.acquireAsync();
for (const res of this.responseBuffer) {
// Match url
if (!this.matchURL(res.url())) {
continue;
}
// Acknowledge receipt of response
this.responseFromAPI = true;
// Get JSON data
let data;
try {
data = await res.json();
if (typeof data !== "object") {
this.logger.error("Response data is not an object", { data });
continue;
}
}
catch (error) {
this.logger.error("Error processing response JSON", {
data,
error,
});
continue;
}
// Emit event
this.executePlugins("response", res, data);
// Check for rate limiting
if (data && "status" in data && data["status"] === "fail") {
this.logger.info("Rate limited");
this.hibernate = true;
continue;
}
// Check for next page
if (!(_.get(data, this.pageQuery + ".has_next_page", false) &&
_.get(data, this.pageQuery + ".end_cursor", false))) {
this.logger.info("No posts remaining", { data });
this.finish(FinishedReasons.API_FINISHED);
}
await this.processResponseData(data);
}
// Clear buffer and release
this.responseBuffer = [];
this.responseBufferLock.release();
}
async processResponseData(data) {
// Get posts
const posts = _.get(data, this.edgeQuery, []);
for (const post of posts) {
const postId = post["node"]["id"];
// Check it hasn't already been cached
const contains = this.postIds.add(postId);
if (contains) {
this.logger.info("Duplicate id found", { postId });
continue;
}
// Add to postBuffer
if (this.index < this.total || this.total === 0) {
this.index++;
if (this.fullAPI) {
this.pagePromises.push(this.postPage(post["node"]["shortcode"], this.postPageRetries));
}
else {
await this.addToPostBuffer(post);
}
}
else {
this.finish(FinishedReasons.TOTAL_REACHED_API);
break;
}
}
}
/**
* Open a post in a new page, then extract its metadata
*/
async postPage(post, retries) {
// Create page
const postPage = await this.browser.newPage();
await postPage.setRequestInterception(true);
postPage.on("request", async (req) => {
if (!req.url().includes("/p/" + post)) {
await req.abort();
}
else {
await req.continue();
}
});
postPage.on("requestfailed", async (req) => this.interceptFailure(req));
// Visit post and read state
let parsed;
try {
await postPage.goto(this.postURL + post + "/");
}
catch (error) {
await this.handlePostPageError(postPage, error, "Couldn't navigate to page", post, retries);
return;
}
// Load data from memory
let data;
try {
/* istanbul ignore next */
data = await postPage.evaluate(async () => {
// Wait for _sharedData value to be set
await new Promise((resolve) => {
let i = 0;
const findSharedData = setInterval(() => {
if (window["_sharedData"] !== undefined || i++ > 5) {
resolve();
clearInterval(findSharedData);
}
}, 2000);
});
return JSON.stringify(window["_sharedData"].entry_data.PostPage[0].graphql);
});
}
catch (error) /* istanbul ignore next */ {
await this.handlePostPageError(postPage, error, "Couldn't evaluate on page", post, retries);
return;
}
// Close page
await postPage.close();
// Parse data to PostType
try {
parsed = JSON.parse(data);
}
catch (error) /* istanbul ignore next */ {
await this.handlePostPageError(postPage, error, "Couldn't parse page data", post, retries);
return;
}
await this.executePlugins("postPage", parsed);
await this.addToPostBuffer(parsed);
}
async handlePostPageError(page, error, message, post, retries) {
// Log error and wait
this.logger.error(message, { error });
await this.progress(Progress.ABORTED);
await this.sleep(2);
// Close existing attempt
if (!page.isClosed()) {
await page.close();
}
// Retry
if (retries > 0) {
await this.postPage(post, --retries);
}
}
async validatePost(post) {
const validationResult = this.validator.decode(post);
if (this.strict) {
try {
ThrowReporter_1.ThrowReporter.report(validationResult);
}
catch (e) {
await this.forceStop();
throw e;
}
return;
}
if (Either_1.isLeft(validationResult)) {
const validationReporter = PathReporter_1.PathReporter.report(validationResult);
this.logger.warn(`
Warning! The Instagram API has been changed since this version of instamancer was released.
More info: https://scriptsmith.github.io/instamancer/api-change
`, { validationReporter, post });
}
}
/**
* Stimulate the page until responses gathered
*/
async getNext() {
await this.progress(Progress.SCRAPING);
while (true) {
// Process results (if any)
await this.processRequests();
await this.processResponses();
// Finish page promises
if (this.pagePromises.length > 0) {
await this.progress(Progress.BRANCHING);
await Promise.all(this.pagePromises);
this.pagePromises = [];
}
// Check if finished
if (this.finished) {
break;
}
// Pause if paused
await this.waitResume();
// Interact with page to stimulate request
await this.jump();
// Stop if no data is being gathered
if (this.jumps === this.failedJumps) {
if (this.fullAPI) {
if (!this.responseFromAPI) {
this.finish(FinishedReasons.NO_RESPONSE);
}
}
else if (this.index === 0) {
this.finish(FinishedReasons.NO_INCREMENT);
const pageContent = { content: "" };
try {
pageContent.content = await this.page.content();
}
catch (e) {
// No content
}
this.logger.error("Page failed to make requests", pageContent);
break;
}
}
// Enable grafting if required
if (this.jumps % this.jumpMod === 0) {
await this.initiateGraft();
}
// Sleep
await this.sleep(this.sleepTime);
// Hibernate if rate-limited
if (this.hibernate) {
await this.sleep(this.hibernationTime);
this.hibernate = false;
}
// Break if posts in buffer
await this.postBufferLock.acquireAsync();
const posts = this.postBuffer.length;
this.postBufferLock.release();
if (posts > 0) {
break;
}
}
}
/**
* Halt execution
* @param time Seconds
*/
async sleep(time) {
for (let i = time; i > 0; i--) {
this.sleepRemaining = i;
await this.progress(Progress.SCRAPING);
await new Promise((resolve) => {
setTimeout(resolve, i >= 1 ? 1000 : i * 1000);
});
}
this.sleepRemaining = 0;
await this.progress(Progress.SCRAPING);
}
/**
* Create the browser and page, then visit the url
*/
async constructPage() {
// Browser args
const args = [];
/* istanbul ignore if */
if (process.env.NO_SANDBOX) {
args.push("--no-sandbox");
args.push("--disable-setuid-sandbox");
}
if (this.proxyURL !== undefined) {
args.push("--proxy-server=" + this.proxyURL);
}
// Browser launch options
const options = {
args,
headless: this.headless,
};
if (this.executablePath !== undefined) {
options.executablePath = this.executablePath;
}
// Launch browser
if (this.browserInstance) {
await this.progress(Progress.LAUNCHING);
this.browser = this.browserInstance;
this.browserDisconnected = !this.browser.isConnected();
this.browser.on("disconnected", () => (this.browserDisconnected = true));
}
else if (!this.sameBrowser || (this.sameBrowser && !this.started)) {
await this.progress(Progress.LAUNCHING);
this.browser = await puppeteer_1.launch(options);
this.browserDisconnected = false;
this.browser.on("disconnected", () => (this.browserDisconnected = true));
}
// New page
this.page = await this.browser.newPage();
await this.progress(Progress.OPENING);
// Attempt to visit URL
try {
await this.page.goto(this.url);
// Check page loads
/* istanbul ignore next */
const pageLoaded = await this.page.evaluate(() => {
const headings = document.querySelectorAll("h2");
for (const heading of Array.from(headings)) {
if (heading.innerHTML ===
"Sorry, this page isn't available.") {
return false;
}
}
return true;
});
if (!pageLoaded) {
await this.handleConstructionError("Page loaded with no content", 10);
return false;
}
// Run defaultPagePlugins
for (const f of this.defaultPageFunctions) {
await this.page.evaluate(f);
}
// Fix issue with disabled scrolling
/* istanbul ignore next */
await this.page.evaluate(() => {
setInterval(() => {
try {
document.body.style.overflow = "";
}
catch (error) {
this.logger.error("Failed to update style", { error });
}
}, 10000);
});
}
catch (e) {
await this.handleConstructionError(e, 60);
return false;
}
return true;
}
/***
* Handle errors that occur during page construction
*/
async handleConstructionError(error, timeout) {
// Log error and wait
this.logger.error("Construction error", { error, url: this.url });
await this.progress(Progress.ABORTED);
await this.sleep(timeout);
// Close existing attempt
if (!this.page.isClosed()) {
await this.page.close();
}
await this.browser.close();
}
/**
* Pause and wait until resumed
*/
async waitResume() {
// Pause for 200 milliseconds
function f() {
return new Promise((resolve) => {
setTimeout(resolve, 200);
});
}
// Pause until pause toggled
while (this.paused === true) {
await this.progress(Progress.PAUSED);
await f();
}
}
/**
* Pop a post off the postBuffer (using locks). Returns null if no posts in buffer
*/
async postPop() {
let post = null;
await this.postBufferLock.acquireAsync();
if (this.postBuffer.length > 0) {
post = this.postBuffer.shift();
}
this.postBufferLock.release();
return post;
}
/**
* Print progress to stderr
*/
async progress(state) {
// End if silent
if (this.silent) {
return;
}
// Lock
await this.writeLock.acquireAsync();
// Calculate total
const total = this.total === 0 ? "Unlimited" : this.total;
// Generate output string
const idStr = chalk_1.default.bgYellow.black(` ${this.id} `);
const totalStr = chalk_1.default.bgBlack(` Total: ${total} `);
const stateStr = chalk_1.default.bgWhite.black(` State: ${state} `);
const sleepStr = chalk_1.default.bgWhite.black(` Sleeping: ${this.sleepRemaining} `);
const indexStr = chalk_1.default.bgWhite.black(` Scraped: ${this.index} `);
this.logger.debug({
id: this.id,
index: this.index,
sleepRemaining: this.sleepRemaining,
state,
total,
});
// Print output
process.stderr.write(`\r${idStr}${totalStr}${stateStr}${sleepStr}${indexStr}\u001B[K`);
// Release
this.writeLock.release();
}
/**
* Add request to the request buffer
*/
async interceptRequest(req) {
await this.requestBufferLock.acquireAsync();
this.requestBuffer.push(req);
await this.requestBufferLock.release();
}
/**
* Add the response to the response buffer
*/
async interceptResponse(res) {
await this.responseBufferLock.acquireAsync();
this.responseBuffer.push(res);
await this.responseBufferLock.release();
}
/**
* Log failed requests
*/
async interceptFailure(req) {
this.logger.info("Failed request", { url: req.url() });
await this.progress(Progress.ABORTED);
}
/**
* Add post to buffer
*/
async addToPostBuffer(post) {
await this.postBufferLock.acquireAsync();
await this.validatePost(post);
this.postBuffer.push(post);
this.postBufferLock.release();
}
/**
* Manipulate the page to stimulate a request
*/
async jump() {
await this.page.keyboard.press("PageUp");
const jumpSize = this.graft ? 1 : this.jumpSize;
for (let i = 0; i < jumpSize; i++) {
await this.page.keyboard.press("End");
}
// Move mouse randomly
const width = this.page.viewport()["width"];
const height = this.page.viewport()["height"];
await this.page.mouse.move(Math.round(width * Math.random()), Math.round(height * Math.random()));
++this.jumps;
}
/**
* Clear request and response buffers
*/
async initiateGraft() {
// Check if enabled
if (!this.enableGrafting) {
return;
}
await this.progress(Progress.GRAFTING);
this.executePlugins("grafting");
// Enable grafting
this.graft = true;
}
/**
* Read the posts that are pre-loaded on the page
*/
async scrapeDefaultPosts() {
// Get shortcodes from page
/* istanbul ignore next */
const shortCodes = await this.page.evaluate((url) => {
return Array.from(document.links)
.filter((link) => {
return (link.href.startsWith(url) &&
link.href.split("/").length >= 2);
})
.map((link) => {
const linkSplit = link.href.split("/");
return linkSplit[linkSplit.length - 2];
});
}, this.defaultPostURL);
// Add postPage promises
for (const shortCode of shortCodes) {
if (this.index < this.total || this.total === 0) {
this.index++;
this.pagePromises.push(this.postPage(shortCode, this.postPageRetries));
}
else {
this.finish(FinishedReasons.TOTAL_REACHED_PAGE);
break;
}
}
}
addPlugins(plugins) {
if (!plugins) {
return;
}
for (const plugin of plugins) {
for (const event of Object.keys(this.pluginFunctions)) {
const pluginEvent = plugin[event + "Event"];
if (pluginEvent) {
const context = {
plugin,
state: this,
};
this.pluginFunctions[event].push(pluginEvent.bind(context));
}
}
}
}
executePlugins(event, ...args) {
if (event in plugins_1.SyncPluginEvents) {
for (const pluginFunction of this.pluginFunctions["construction"]) {
pluginFunction();
}
return;
}
return Promise.all(
// @ts-ignore
this.pluginFunctions[event].map((cb) => cb(...args)));
}
}
exports.Instagram = Instagram;
/**
* The states of progress that the API can be in. Used to output status.
*/
var Progress;
(function (Progress) {
Progress["LAUNCHING"] = "Launching";
Progress["OPENING"] = "Navigating";
Progress["SCRAPING"] = "Scraping";
Progress["BRANCHING"] = "Branching";
Progress["GRAFTING"] = "Grafting";
Progress["CLOSING"] = "Closing";
Progress["PAUSED"] = "Paused";
Progress["ABORTED"] = "Request aborted";
})(Progress || (Progress = {}));
/**
* Reasons why the collection finished
*/
var FinishedReasons;
(function (FinishedReasons) {
// forceStop used
FinishedReasons[FinishedReasons["FORCED_STOP"] = 0] = "FORCED_STOP";
// API response doesn't contain next page
FinishedReasons[FinishedReasons["API_FINISHED"] = 1] = "API_FINISHED";
// Total posts required have been collected from the API
FinishedReasons[FinishedReasons["TOTAL_REACHED_API"] = 2] = "TOTAL_REACHED_API";
// Total posts required have been collected from the default posts
FinishedReasons[FinishedReasons["TOTAL_REACHED_PAGE"] = 3] = "TOTAL_REACHED_PAGE";
// No API response intercepted after interacting with page
FinishedReasons[FinishedReasons["NO_RESPONSE"] = 4] = "NO_RESPONSE";
// Index hasn't increased after interacting with page
FinishedReasons[FinishedReasons["NO_INCREMENT"] = 5] = "NO_INCREMENT";
})(FinishedReasons || (FinishedReasons = {}));
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