92 lines
2.2 KiB
Go
92 lines
2.2 KiB
Go
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// SPDX-FileCopyrightText: Copyright The Miniflux Authors. All rights reserved.
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// SPDX-License-Identifier: Apache-2.0
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package storage // import "miniflux.app/v2/internal/storage"
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import (
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"database/sql"
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"fmt"
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"strings"
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"miniflux.app/v2/internal/model"
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)
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type BatchBuilder struct {
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db *sql.DB
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args []any
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conditions []string
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limit int
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}
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func (s *Storage) NewBatchBuilder() *BatchBuilder {
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return &BatchBuilder{
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db: s.db,
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}
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}
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func (b *BatchBuilder) WithBatchSize(batchSize int) *BatchBuilder {
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b.limit = batchSize
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return b
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}
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func (b *BatchBuilder) WithUserID(userID int64) *BatchBuilder {
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b.conditions = append(b.conditions, fmt.Sprintf("user_id = $%d", len(b.args)+1))
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b.args = append(b.args, userID)
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return b
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}
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func (b *BatchBuilder) WithCategoryID(categoryID int64) *BatchBuilder {
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b.conditions = append(b.conditions, fmt.Sprintf("category_id = $%d", len(b.args)+1))
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b.args = append(b.args, categoryID)
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return b
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}
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func (b *BatchBuilder) WithErrorLimit(limit int) *BatchBuilder {
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if limit > 0 {
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b.conditions = append(b.conditions, fmt.Sprintf("parsing_error_count < $%d", len(b.args)+1))
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b.args = append(b.args, limit)
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}
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return b
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}
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func (b *BatchBuilder) WithNextCheckExpired() *BatchBuilder {
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b.conditions = append(b.conditions, "next_check_at < now()")
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return b
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}
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func (b *BatchBuilder) WithoutDisabledFeeds() *BatchBuilder {
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b.conditions = append(b.conditions, "disabled is false")
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return b
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}
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func (b *BatchBuilder) FetchJobs() (jobs model.JobList, err error) {
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var parts []string
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parts = append(parts, `SELECT id, user_id FROM feeds`)
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if len(b.conditions) > 0 {
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parts = append(parts, fmt.Sprintf("WHERE %s", strings.Join(b.conditions, " AND ")))
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}
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if b.limit > 0 {
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parts = append(parts, fmt.Sprintf("ORDER BY next_check_at ASC LIMIT %d", b.limit))
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}
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query := strings.Join(parts, " ")
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rows, err := b.db.Query(query, b.args...)
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if err != nil {
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return nil, fmt.Errorf(`store: unable to fetch batch of jobs: %v`, err)
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}
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defer rows.Close()
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for rows.Next() {
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var job model.Job
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if err := rows.Scan(&job.FeedID, &job.UserID); err != nil {
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return nil, fmt.Errorf(`store: unable to fetch job: %v`, err)
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}
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jobs = append(jobs, job)
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}
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return jobs, nil
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}
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