backups: root ~~canal~~ path surgery

remove rootPath and getBackupFilePath from the backup target and
make this backend specific.

src/storage/noop.js

@@ -33,11 +33,11 @@ async function getAvailableSize(apiConfig) {
     return Number.POSITIVE_INFINITY;
 }
 
-async function upload(apiConfig, backupFilePath) {
+async function upload(apiConfig, remotePath) {
     assert.strictEqual(typeof apiConfig, 'object');
-    assert.strictEqual(typeof backupFilePath, 'string');
+    assert.strictEqual(typeof remotePath, 'string');
 
-    debug(`upload: ${backupFilePath}`);
+    debug(`upload: ${remotePath}`);
 
     const uploadStream = fs.createWriteStream('/dev/null');
 
@@ -47,40 +47,40 @@ async function upload(apiConfig, backupFilePath) {
     };
 }
 
-async function exists(apiConfig, backupFilePath) {
+async function exists(apiConfig, remotePath) {
     assert.strictEqual(typeof apiConfig, 'object');
-    assert.strictEqual(typeof backupFilePath, 'string');
+    assert.strictEqual(typeof remotePath, 'string');
 
-    debug(`exists: ${backupFilePath}`);
+    debug(`exists: ${remotePath}`);
 
     return false;
 }
 
-async function download(apiConfig, backupFilePath) {
+async function download(apiConfig, remotePath) {
     assert.strictEqual(typeof apiConfig, 'object');
-    assert.strictEqual(typeof backupFilePath, 'string');
+    assert.strictEqual(typeof remotePath, 'string');
 
-    debug('download: %s', backupFilePath);
+    debug('download: %s', remotePath);
 
     throw new BoxError(BoxError.NOT_IMPLEMENTED, 'Cannot download from noop backend');
 }
 
-async function listDir(apiConfig, dir, batchSize, marker) {
+async function listDir(apiConfig, remotePath, batchSize, marker) {
     assert.strictEqual(typeof apiConfig, 'object');
-    assert.strictEqual(typeof dir, 'string');
+    assert.strictEqual(typeof remotePath, 'string');
     assert.strictEqual(typeof batchSize, 'number');
     assert(typeof marker !== 'undefined');
 
     return { entries: [], marker: null };
 }
 
-async function copy(apiConfig, oldFilePath, newFilePath, progressCallback) {
+async function copy(apiConfig, fromRemotePath, toRemotePath, progressCallback) {
     assert.strictEqual(typeof apiConfig, 'object');
-    assert.strictEqual(typeof oldFilePath, 'string');
-    assert.strictEqual(typeof newFilePath, 'string');
+    assert.strictEqual(typeof fromRemotePath, 'string');
+    assert.strictEqual(typeof toRemotePath, 'string');
     assert.strictEqual(typeof progressCallback, 'function');
 
-    debug(`copy: ${oldFilePath} -> ${newFilePath}`);
+    debug(`copy: ${fromRemotePath} -> ${toRemotePath}`);
 }
 
 async function remove(apiConfig, filename) {
@@ -90,12 +90,12 @@ async function remove(apiConfig, filename) {
     debug(`remove: ${filename}`);
 }
 
-async function removeDir(apiConfig, pathPrefix, progressCallback) {
+async function removeDir(apiConfig, remotePathPrefix, progressCallback) {
     assert.strictEqual(typeof apiConfig, 'object');
-    assert.strictEqual(typeof pathPrefix, 'string');
+    assert.strictEqual(typeof remotePathPrefix, 'string');
     assert.strictEqual(typeof progressCallback, 'function');
 
-    debug(`removeDir: ${pathPrefix}`);
+    debug(`removeDir: ${remotePathPrefix}`);
 }
 
 async function cleanup(apiConfig, progressCallback) {