Exemple #1
0
        /// <summary>
        /// Mounts the bucket. Mount is necessary before using a bucket to ensure the existence of tables and indexes.
        /// </summary>
        public async Task MountAsync(CancellationToken cancelToken = default)
        {
            if (this.Mounted)
            {
                return;
            }

            var filesTableResult = await EnsureTable(this.fileTableName, cancelToken)
                                   .ConfigureAwait(false);

            if (filesTableResult.TablesCreated == 1)
            {
                //index the file paths of completed files and status
                ReqlFunction1 pathIx = row => { return(R.Array(row[FileInfo.StatusJsonName], row[FileInfo.FileNameJsonName], row[FileInfo.FinishedDateJsonName])); };
                await CreateIndex(this.fileTableName, this.fileIndex, pathIx, cancelToken)
                .ConfigureAwait(false);


                //prefix IX
                ReqlFunction1 prefixIx = doc =>
                {
                    //return r.array(doc[FileInfo.FileNameJsonName].split("/").slice(1, -1), doc[FileInfo.FinishedDateJsonName]);
                    return(R.Branch(doc[FileInfo.StatusJsonName].Eq(Status.Completed),
                                    R.Array(doc[FileInfo.FileNameJsonName].Split("/").Slice(1, -1), doc[FileInfo.FinishedDateJsonName]),
                                    R.Error()));
                };
                await CreateIndex(this.fileTableName, this.fileIndexPrefix, prefixIx, cancelToken)
                .ConfigureAwait(false);
            }


            // CHUNK TAABLE INDEXES

            var chunkTableResult = await EnsureTable(this.chunkTableName, cancelToken)
                                   .ConfigureAwait(false);

            if (chunkTableResult.TablesCreated == 1)
            {
                //Index the chunks and their parent [fileid, n].
                ReqlFunction1 chunkIx = row => { return(R.Array(row[Chunk.FilesIdJsonName], row[Chunk.NumJsonName])); };
                await CreateIndex(this.chunkTableName, this.chunkIndexName, chunkIx, cancelToken)
                .ConfigureAwait(false);
            }

            this.Mounted = true;
        }