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phoenix_live_view
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0.1.0
Rich, real-time user experiences with server-rendered HTML
Security advisory:
This version has known vulnerabilities.
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Files
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Files
assets/js/phoenix_live_view/entry_uploader.js
import { logError } from "./utils";
export default class EntryUploader {
constructor(entry, config, liveSocket) {
const { chunk_size, chunk_timeout } = config;
this.liveSocket = liveSocket;
this.entry = entry;
this.offset = 0;
this.chunkSize = chunk_size;
this.chunkTimeout = chunk_timeout;
this.chunkTimer = null;
this.errored = false;
this.uploadChannel = liveSocket.channel(`lvu:${entry.ref}`, {
token: entry.metadata(),
});
}
error(reason) {
if (this.errored) {
return;
}
this.uploadChannel.leave();
this.errored = true;
this.chunkTimer != null && clearTimeout(this.chunkTimer);
this.entry.error(reason);
}
upload() {
this.uploadChannel.onError((reason) => this.error(reason));
this.uploadChannel
.join()
.receive("ok", (_data) => this.readNextChunk())
.receive("error", ({ reason }) => this.error(reason));
}
isDone() {
return this.offset >= this.entry.file.size;
}
readNextChunk() {
const reader = new window.FileReader();
const blob = this.entry.file.slice(
this.offset,
this.chunkSize + this.offset,
);
reader.onload = (e) => {
if (e.target?.error === null) {
this.offset += /** @type {ArrayBuffer} */ (e.target.result).byteLength;
this.pushChunk(/** @type {ArrayBuffer} */ (e.target.result));
} else {
return logError("Read error: " + e.target?.error);
}
};
reader.readAsArrayBuffer(blob);
}
pushChunk(chunk) {
if (!this.uploadChannel.isJoined()) {
return;
}
this.uploadChannel
.push("chunk", chunk, this.chunkTimeout)
.receive("ok", () => {
this.entry.progress((this.offset / this.entry.file.size) * 100);
if (!this.isDone()) {
this.chunkTimer = setTimeout(
() => this.readNextChunk(),
this.liveSocket.getLatencySim() || 0,
);
}
})
.receive("error", ({ reason }) => this.error(reason));
}
}