miniflux-v2/reader/processor/processor.go

79 lines
2.3 KiB
Go

// Copyright 2018 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
package processor
import (
"time"
"miniflux.app/config"
"miniflux.app/logger"
"miniflux.app/metric"
"miniflux.app/model"
"miniflux.app/reader/rewrite"
"miniflux.app/reader/sanitizer"
"miniflux.app/reader/scraper"
"miniflux.app/storage"
)
// ProcessFeedEntries downloads original web page for entries and apply filters.
func ProcessFeedEntries(store *storage.Storage, feed *model.Feed) {
for _, entry := range feed.Entries {
logger.Debug("[Feed #%d] Processing entry %s", feed.ID, entry.URL)
if feed.Crawler {
if !store.EntryURLExists(feed.ID, entry.URL) {
startTime := time.Now()
content, scraperErr := scraper.Fetch(entry.URL, feed.ScraperRules, feed.UserAgent)
if config.Opts.HasMetricsCollector() {
status := "success"
if scraperErr != nil {
status = "error"
}
metric.ScraperRequestDuration.WithLabelValues(status).Observe(time.Since(startTime).Seconds())
}
if scraperErr != nil {
logger.Error(`[Filter] Unable to crawl this entry: %q => %v`, entry.URL, scraperErr)
} else if content != "" {
// We replace the entry content only if the scraper doesn't return any error.
entry.Content = content
}
}
}
entry.Content = rewrite.Rewriter(entry.URL, entry.Content, feed.RewriteRules)
// The sanitizer should always run at the end of the process to make sure unsafe HTML is filtered.
entry.Content = sanitizer.Sanitize(entry.URL, entry.Content)
}
}
// ProcessEntryWebPage downloads the entry web page and apply rewrite rules.
func ProcessEntryWebPage(entry *model.Entry) error {
startTime := time.Now()
content, scraperErr := scraper.Fetch(entry.URL, entry.Feed.ScraperRules, entry.Feed.UserAgent)
if config.Opts.HasMetricsCollector() {
status := "success"
if scraperErr != nil {
status = "error"
}
metric.ScraperRequestDuration.WithLabelValues(status).Observe(time.Since(startTime).Seconds())
}
if scraperErr != nil {
return scraperErr
}
content = rewrite.Rewriter(entry.URL, content, entry.Feed.RewriteRules)
content = sanitizer.Sanitize(entry.URL, content)
if content != "" {
entry.Content = content
}
return nil
}