Tag: FormData

Salesforce File Migration (ContentVersion) via Node.js

As part of a project I was assigned the task to move content version from one org (legacy) to another. For this purpose I used node.js as my go-to language to achieve this. First task was to download the file from legacy org and then subsequently upload the same to the active org without storing the file in the local file system.

One important thing to note here is to insert the files in content version there are 2 different approaches
– Use the JSON structure to insert a record in the content version for content lesser than 37Mb.
– Use the multipart method to insert the blob if the size of the content is greater than 37Mb.

In the below code you will see that I am fetching the latest content version file and inserting it back in the same org. But you can obviously connect with another org and push the file into that org.

const jsforce = require("jsforce");
const axios = require("axios");
var FormData = require("form-data");
const getStream = require("get-stream");
const mime = require("mime-types");
const conn = new jsforce.Connection({
loginUrl: "https://login.salesforce.com",
});
const username = "";
const password = "";
const main = async () => {
await conn.login(username, password);
const sourceContentVersionFile =
await conn.query(`SELECT Id, Title, ContentSize, VersionData, PathOnClient
FROM ContentVersion
ORDER BY CreatedDate DESC
LIMIT 1`);
const contentVersionRecord = sourceContentVersionFile.records[0];
if (contentVersionRecord.ContentSize > 37000000) {
// size greater than 37Mb use multipart blob insert.
const fileStream = await getFile(contentVersionRecord, false);
const formData = createFormData(contentVersionRecord, fileStream);
const URL =
conn.instanceUrl + "/services/data/v51.0/sobjects/ContentVersion";
await axios({
method: "post",
maxContentLength: Infinity,
maxBodyLength: Infinity,
url: URL,
headers: {
Authorization: "Bearer " + conn.accessToken,
"Content-Type": `multipart/form-data; boundary=\"boundary_string\"`,
},
data: formData,
});
} else {
const base64Body = await getFile(contentVersionRecord, true);
await conn.sobject("ContentVersion").insert({
Title: contentVersionRecord.Title,
PathOnClient: contentVersionRecord.PathOnClient,
VersionData: base64Body,
FirstPublishLocationId: "0012w00000rTbXNAA0", //Id to which the content version needs to be linked
Origin: "H",
});
}
};
const getFile = async (data, generateBase64String) => {
const file = await axios({
method: "get",
url: conn.instanceUrl + data.VersionData,
headers: {
Authorization: "Bearer " + conn.accessToken,
},
responseType: "stream",
});
if (generateBase64String) {
return await getStream(file.data, { encoding: "base64" });
} else {
return file.data; // return the stream;
}
};
const createFormData = (data, file) => {
const contentVersion = {
FirstPublishLocationId: "0012w00000rTbXNAA0",
Title: data.Title,
PathOnClient: data.PathOnClient,
Origin: "H",
};
const form = new FormData();
form.setBoundary("boundary_string");
form.append("entity_content", JSON.stringify(contentVersion), {
contentType: "application/json",
});
form.append("VersionData", file, {
filename: data.PathOnClient,
contentType: mime.lookup(data.PathOnClient),
});
return form;
};
main();
view raw main.js hosted with ❤ by GitHub

Couple of things:
– The above code shows the migration of a single file, however the same logic can be used to migrate any number of files.
– I am pulling and pushing the file in the same org. You can however connect to multiple salesforce Orgs and move the file around.

Hope it helps!