Oracle Cloud Object Storage

このスニペットは、Oracle Cloud Object StorageバケットにIoTデータを送信する機能を提供します。

Resources used: HTTPS x 1

Details

send_oracle 関数は、HTTPS経由で事前認証されたリクエストを使用して、渡された文字列オブジェクト「payload」をOracle Object Storageバケットの指定した「object」に PUT できます。 結果（エラー/レスポンス）は、コールバック関数に渡されます。

このスニペットを使用するには、 PAR_URL (バケットからの事前認証済みリクエストURL)と CA をユーザーが設定する必要があります。

注意: 提供されている関数では、最大4KBまでのデータを取り扱うことができます。より大きなサイズのデータを取り扱う場合は、neqto.jsドキュメントのhttpsオブジェクト、分割書き込みを参考にしてください。

CAの取得方法はこちら。

var CA = "-----BEGIN CERTIFICATE-----\n...<CA>...\n-----END CERTIFICATE-----"

//=================================================================
// ORACLE SNIPPET
//=================================================================

//=================================================================
// The following configuration are MANDATORY. Set by user.
//=================================================================
// The address of the Pre-Authenticated Request (PAR) URL from the bucket.
// eg. 'objectstorage.us-phoenix-1.oraclecloud.com/p/j3DoSvgQHbUaw6ADzHkDlnaqMuXWef_lhTxCiS9ngCw/n/docs/b/par-bucket/o/'
var PAR_URL = '<YOUR_PAR-URL>';

// Public certificate of the certificate authority that signed the Oracle server certificate for SSL/TLS handshake.  
// eg. '-----BEGIN CERTIFICATE-----\n...<CA>...\n-----END CERTIFICATE-----'
var CA = '<YOUR_CA>';
//=================================================================

/**
 * Post data to Oracle Object Storage Bucket using PAR (Pre-Authenticated Request).
 * https://docs.cloud.oracle.com/en-us/iaas/Content/Object/Tasks/usingpreauthenticatedrequests.htm
 * @function send_oracle
 * @param {string} object - Name of the object/file to be put, as a String.
 * @param {string} payload - Data to be sent to Oracle server, as a String.
 * @param {function} callback - User callback to return the result (error/response).
 * @returns {undefined}
 */
var send_oracle = function (object, payload, callback) {
    var body = payload.toString();
    var host = PAR_URL.split(/\/(.+)/)[0];
    var path = PAR_URL.split(/\/(.+)/)[1];
    var options = {
        "method": 'PUT',
        "host": host,
        "path": `/${path}${object}`,
        "headers": {
            "Content-Length": body.length.toString()
        },
        "ca": CA
    };
    var request = https.request(options, function (response) {
        response.on('end', function () {
            callback(null, { "statusCode": response.statusCode, "statusMessage": response.statusMessage, "body": response.read() });
        });
    });
    request.on('error', function () {
        callback({ "errCode": request.errCode }, null);
    });
    request.end(body.toString(), function () {
        print("[request] SUCCESS");
    });
}

Function Usage Example

/*
<INSERT ABOVE SNIPPET HERE WITH SET CONFIGURATIONS>
*/

//=================================================================
log.setLevel(-1);       //-1:NONE 0:ERROR 1:WARNING 2:DEBUG 3:TRACE
log.printLevel(2);      //0:DISABLE 1:LOG 2:CONSOLE 3:BOTH
//=================================================================
// MAIN SCENARIO
//=================================================================

/**
 * Callback to fetch error/response from the request.
 * @function callback
 * @param {object} err - Error returned in case of a failed request. Has one property - `errCode`.
 * @param {object} data - Response returned by a successfully completed request. Has three properties - `statusCode`, `statusMessage`, and `body`.
 */
var callback = function (err, data) {
    if (err) {
        print("[error]", err.errCode);
    } else {
        print("[status]", data.statusCode, data.statusMessage);
        print("[response]", data.body);
    }
}

var object = "folder/file.txt";
var payload = "Hello from NEQTO Device";
send_oracle(object, payload, callback);
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Updated: 2023-04-14
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