Separate drive and file apis
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208007c0f7
commit
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1 changed files with 84 additions and 170 deletions
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@ -1,203 +1,131 @@
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const std = @import("std");
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const sql = @import("sql");
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const util = @import("util");
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const Uuid = util.Uuid;
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const DateTime = util.DateTime;
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pub const FileOwner = union(enum) {
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user_id: Uuid,
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community_id: Uuid,
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pub const FileStatus = enum {
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uploading,
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uploaded,
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external,
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deleted,
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};
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pub const DriveFile = struct {
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pub const FileUpload = struct {
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id: Uuid,
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path: []const u8,
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filename: []const u8,
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owner: FileOwner,
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created_by: Uuid,
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size: usize,
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description: []const u8,
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content_type: []const u8,
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filename: []const u8,
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description: ?[]const u8,
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content_type: ?[]const u8,
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sensitive: bool,
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status: FileStatus,
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created_at: DateTime,
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updated_at: DateTime,
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};
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const EntryType = enum {
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dir,
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file,
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};
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pub const CreateFileArgs = struct {
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dir: []const u8,
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pub const FileMeta = struct {
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filename: []const u8,
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owner: FileOwner,
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created_by: Uuid,
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description: ?[]const u8,
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content_type: ?[]const u8,
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sensitive: bool,
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};
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fn lookupDirectory(db: anytype, owner: FileOwner, path: []const u8, alloc: std.mem.Allocator) !Uuid {
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return (try db.queryRow(
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std.meta.Tuple(
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&.{util.Uuid},
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),
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\\SELECT id
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\\FROM drive_entry_path
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\\WHERE
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\\ path = (CASE WHEN LENGTH($1) = 0 THEN '/' ELSE '/' || $1 || '/' END)
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\\ AND account_owner_id IS NOT DISTINCT FROM $2
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\\ AND community_owner_id IS NOT DISTINCT FROM $3
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\\ AND kind = 'dir'
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\\LIMIT 1
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,
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.{
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std.mem.trim(u8, path, "/"),
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if (owner == .user_id) owner.user_id else null,
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if (owner == .community_id) owner.community_id else null,
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},
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alloc,
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))[0];
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pub fn Partial(comptime T: type) type {
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const t_fields = std.meta.fields(T);
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var fields: [t_fields]std.builtin.Type.StructField = undefined;
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for (std.meta.fields(T)) |f, i| fields[i] = .{
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.name = f.name,
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.field_type = ?f.field_type,
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.default_value = &@as(?f.field_type, null),
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.is_comptime = false,
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.alignment = @alignOf(?f.field_type),
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};
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return @Type(.{ .Struct = .{
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.layout = .Auto,
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.fields = fields,
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.decls = &.{},
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.is_tuple = false,
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} });
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}
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fn lookup(db: anytype, owner: FileOwner, path: []const u8, alloc: std.mem.Allocator) !Uuid {
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return (try db.queryRow(
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std.meta.Tuple(
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&.{util.Uuid},
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),
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\\SELECT id
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\\FROM drive_entry_path
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\\WHERE
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\\ path = (CASE WHEN LENGTH($1) = 0 THEN '/' ELSE '/' || $1 || '/' END)
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\\ AND account_owner_id IS NOT DISTINCT FROM $2
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\\ AND community_owner_id IS NOT DISTINCT FROM $3
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\\LIMIT 1
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,
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.{
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std.mem.trim(u8, path, "/"),
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if (owner == .user_id) owner.user_id else null,
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if (owner == .community_id) owner.community_id else null,
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},
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alloc,
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))[0];
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}
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pub fn update(db: anytype, id: Uuid, meta: Partial(FileMeta), alloc: std.mem.Allocator) !void {
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var builder = sql.QueryBuilder.init(alloc);
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defer builder.deinit();
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pub fn mkdir(db: anytype, owner: FileOwner, path: []const u8, alloc: std.mem.Allocator) !void {
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var split = std.mem.splitBackwards(u8, std.mem.trim(u8, path, "/"), "/");
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const name = split.first();
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const dir = split.rest();
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std.log.debug("'{s}' / '{s}'", .{ name, dir });
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try builder.appendSlice("UPDATE file_upload");
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if (name.len == 0) return error.EmptyName;
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if (meta.filename) |_| try builder.set("filename", "$2");
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if (meta.description) |_| try builder.set("description", "$3");
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if (meta.content_type) |_| try builder.set("content_type", "$4");
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if (meta.sensitive) |_| try builder.set("sensitive", "$5");
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const id = Uuid.randV4(util.getThreadPrng());
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if (meta.set_statements_appended == 0) return error.NoChange;
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const tx = try db.begin();
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errdefer tx.rollback();
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try builder.andWhere("id = $1");
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const parent = try lookupDirectory(tx, owner, dir, alloc);
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try builder.appendSlice("\nLIMIT 1");
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try tx.insert("drive_entry", .{
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.id = id,
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.account_owner_id = if (owner == .user_id) owner.user_id else null,
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.community_owner_id = if (owner == .community_id) owner.community_id else null,
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.name = name,
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.parent_directory_id = parent,
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}, alloc);
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try tx.commit();
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}
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pub fn rmdir(db: anytype, owner: FileOwner, path: []const u8, alloc: std.mem.Allocator) !void {
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const tx = try db.begin();
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errdefer tx.rollback();
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const id = try lookupDirectory(tx, owner, path, alloc);
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try tx.exec("DELETE FROM drive_directory WHERE id = $1", .{id}, alloc);
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try tx.commit();
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}
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fn insertFileRow(tx: anytype, id: Uuid, filename: []const u8, owner: FileOwner, dir: Uuid, alloc: std.mem.Allocator) !void {
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try tx.insert("drive_entry", .{
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.id = id,
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.account_owner_id = if (owner == .user_id) owner.user_id else null,
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.community_owner_id = if (owner == .community_id) owner.community_id else null,
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.parent_directory_id = dir,
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.name = filename,
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.file_id = id,
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try db.exec(try builder.terminate(), .{
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id,
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meta.filename orelse null,
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meta.description orelse null,
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meta.content_type orelse null,
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meta.sensitive orelse null,
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}, alloc);
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}
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pub fn createFile(db: anytype, args: CreateFileArgs, data: []const u8, alloc: std.mem.Allocator) !void {
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pub fn create(db: anytype, created_by: Uuid, meta: FileMeta, data: []const u8, alloc: std.mem.Allocator) !void {
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const id = Uuid.randV4(util.getThreadPrng());
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const now = DateTime.now();
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try db.insert("file_upload", .{
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.id = id,
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{
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var tx = try db.begin();
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errdefer tx.rollback();
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.created_by = created_by,
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.size = data.len,
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const dir_id = try lookupDirectory(tx, args.owner, args.dir, alloc);
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.filename = meta.filename,
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.description = meta.description,
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.content_type = meta.content_type,
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.sensitive = meta.sensitive,
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try tx.insert("file_upload", .{
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.id = id,
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.status = .uploading,
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.filename = args.filename,
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.created_at = now,
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.updated_at = now,
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}, alloc);
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.created_by = args.created_by,
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.size = data.len,
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.description = args.description,
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.content_type = args.content_type,
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.sensitive = args.sensitive,
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.is_deleted = false,
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.created_at = now,
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.updated_at = now,
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}, alloc);
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var sub_tx = try tx.savepoint();
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if (insertFileRow(sub_tx, id, args.filename, args.owner, dir_id, alloc)) |_| {
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try sub_tx.release();
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} else |err| {
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std.log.debug("{}", .{err});
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switch (err) {
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error.UniqueViolation => {
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try sub_tx.rollbackSavepoint();
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// Rename the file before trying again
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var split = std.mem.split(u8, args.filename, ".");
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const name = split.first();
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const ext = split.rest();
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var buf: [256]u8 = undefined;
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const drive_filename = try std.fmt.bufPrint(&buf, "{s}.{}.{s}", .{ name, id, ext });
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try insertFileRow(tx, id, drive_filename, args.owner, dir_id, alloc);
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},
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else => return error.DatabaseFailure,
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}
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}
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try tx.commit();
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}
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errdefer {
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db.exec("DELETE FROM file_upload WHERE ID = $1", .{id}, alloc) catch |err| {
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std.log.err("Unable to remove file record in DB: {}", .{err});
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saveFile(id, data) catch |err| {
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db.exec("DELETE FROM file_upload WHERE ID = $1", .{id}, alloc) catch |e| {
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std.log.err("Unable to remove file record in DB: {}", .{e});
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};
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db.exec("DELETE FROM drive_entry WHERE ID = $1", .{id}, alloc) catch |err| {
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std.log.err("Unable to remove file record in DB: {}", .{err});
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};
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}
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return err;
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};
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try saveFile(id, data);
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try db.exec(
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\\UPDATE file_upload
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\\SET status = 'uploaded'
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\\WHERE id = $1
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\\LIMIT 1
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, .{id}, alloc);
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}
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pub fn delete(db: anytype, id: Uuid, alloc: std.mem.Allocator) !void {
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var dir = try std.fs.cwd().openDir(data_root, .{});
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defer dir.close();
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try dir.deleteFile(id.toCharArray());
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try db.exec(
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\\DELETE FROM file_upload
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\\WHERE id = $1
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\\LIMIT 1
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, .{id}, alloc);
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}
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const data_root = "./files";
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@ -218,17 +146,3 @@ pub fn deref(alloc: std.mem.Allocator, id: Uuid) ![]const u8 {
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return dir.readFileAlloc(alloc, &id.toCharArray(), 1 << 32);
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}
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pub fn deleteFile(db: anytype, alloc: std.mem.Allocator, id: Uuid) !void {
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var dir = try std.fs.cwd().openDir(data_root, .{});
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defer dir.close();
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try dir.deleteFile(id.toCharArray());
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const tx = try db.beginOrSavepoint();
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errdefer tx.rollback();
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tx.exec("DELETE FROM drive_entry WHERE ID = $1", .{id}, alloc) catch return error.DatabaseFailure;
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tx.exec("DELETE FROM file_upload WHERE ID = $1", .{id}, alloc) catch return error.DatabaseFailure;
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try tx.commitOrRelease();
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}
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