Create model and parser for keep manifest

Feature #13855

Arvados-DCO-1.1-Signed-off-by: Michal Klobukowski <michal.klobukowski@contractors.roche.com>

diff --git a/src/models/keep-manifest.test.ts b/src/models/keep-manifest.test.ts
new file mode 100644 (file)
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+++ b/src/models/keep-manifest.test.ts
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+// Copyright (C) The Arvados Authors. All rights reserved.
+//
+// SPDX-License-Identifier: AGPL-3.0
+
+import { parseKeepManifestText, parseKeepManifestStream } from "./keep-manifest";
+
+describe('parseKeepManifestText', () => {
+    it('should return correct number of streams', () => {
+        const manifestText = `. 930625b054ce894ac40596c3f5a0d947+33 0:0:a 0:0:b 0:33:output.txt
+        ./c d41d8cd98f00b204e9800998ecf8427e+0 0:0:d`;
+        const manifest = parseKeepManifestText(manifestText);
+        expect(manifest).toHaveLength(2);
+    });
+});
+
+describe('parseKeepManifestStream', () => {
+    const streamText = './c 930625b054ce894ac40596c3f5a0d947+33 0:0:a 0:0:b 0:33:output.txt';
+    const stream = parseKeepManifestStream(streamText);
+
+    it('should parse stream name', () => {
+        expect(stream.streamName).toBe('./c');
+    });
+    it('should parse stream locators', () => {
+        expect(stream.locators).toEqual(['930625b054ce894ac40596c3f5a0d947+33']);
+    });
+    it('should parse stream files', () => {
+        expect(stream.files).toEqual([
+            {fileName: 'a', position: '0', size: 0},
+            {fileName: 'b', position: '0', size: 0},
+            {fileName: 'output.txt', position: '0', size: 33},
+        ]);
+    });
+});
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diff --git a/src/models/keep-manifest.ts b/src/models/keep-manifest.ts
new file mode 100644 (file)
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+++ b/src/models/keep-manifest.ts
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+// Copyright (C) The Arvados Authors. All rights reserved.
+//
+// SPDX-License-Identifier: AGPL-3.0
+
+export type KeepManifest = KeepManifestStream[];
+
+export interface KeepManifestStream {
+    streamName: string;
+    locators: string[];
+    files: Array<KeepManifestStreamFile>;
+}
+
+export interface KeepManifestStreamFile {
+    fileName: string;
+    position: string;
+    size: number;
+}
+
+/**
+ * Documentation [http://doc.arvados.org/api/storage.html](http://doc.arvados.org/api/storage.html)
+ */
+export const parseKeepManifestText = (text: string) =>
+    text.split(/\n/).map(parseKeepManifestStream);
+
+/**
+ * Documentation [http://doc.arvados.org/api/storage.html](http://doc.arvados.org/api/storage.html)
+ */
+export const parseKeepManifestStream = (stream: string): KeepManifestStream => {
+    const tokens = stream.split(' ');
+    return {
+        streamName: streamName(tokens),
+        locators: locators(tokens),
+        files: files(tokens)
+    };
+};
+
+const FILE_LOCATOR_REGEXP = /^([0-9a-f]{32})\+([0-9]+)(\+[A-Z][-A-Za-z0-9@_]*)*$/;
+
+const FILE_REGEXP = /([0-9]+):([0-9]+):(.*)/;
+
+const streamName = (tokens: string[]) => tokens[0];
+
+const locators = (tokens: string[]) => tokens.filter(isFileLocator);
+
+const files = (tokens: string[]) => tokens.filter(isFile).map(parseFile);
+
+const isFileLocator = (token: string) => FILE_LOCATOR_REGEXP.test(token);
+
+const isFile = (token: string) => FILE_REGEXP.test(token);
+
+const parseFile = (token: string): KeepManifestStreamFile => {
+    const match = FILE_REGEXP.exec(token);
+    const [position, size, fileName] = match!.slice(1);
+    return { fileName, position, size: parseInt(size, 10) };
+};
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