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Refactor feed creation to allow setting most fields via API
Allow API clients to create disabled feeds or define field like "ignore_http_cache".
This commit is contained in:
Frédéric Guillot
fguillot
parent
ab82c4b300
commit
f0610bdd9c
26 changed files with 370 additions and 264 deletions
212
reader/handler/handler.go
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212
reader/handler/handler.go
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// Copyright 2017 Frédéric Guillot. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package handler // import "miniflux.app/reader/handler"
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import (
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"fmt"
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"time"
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"miniflux.app/config"
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"miniflux.app/errors"
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"miniflux.app/http/client"
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"miniflux.app/locale"
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"miniflux.app/logger"
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"miniflux.app/model"
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"miniflux.app/reader/browser"
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"miniflux.app/reader/icon"
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"miniflux.app/reader/parser"
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"miniflux.app/reader/processor"
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"miniflux.app/storage"
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"miniflux.app/timer"
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)
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var (
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errDuplicate = "This feed already exists (%s)"
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errNotFound = "Feed %d not found"
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errCategoryNotFound = "Category not found for this user"
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)
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// FeedCreationArgs represents the arguments required to create a new feed.
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type FeedCreationArgs struct {
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UserID int64
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CategoryID int64
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FeedURL string
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UserAgent string
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Username string
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Password string
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Crawler bool
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Disabled bool
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IgnoreHTTPCache bool
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FetchViaProxy bool
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ScraperRules string
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RewriteRules string
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BlocklistRules string
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KeeplistRules string
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}
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// CreateFeed fetch, parse and store a new feed.
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func CreateFeed(store *storage.Storage, args *FeedCreationArgs) (*model.Feed, error) {
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defer timer.ExecutionTime(time.Now(), fmt.Sprintf("[CreateFeed] FeedURL=%s", args.FeedURL))
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if !store.CategoryExists(args.UserID, args.CategoryID) {
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return nil, errors.NewLocalizedError(errCategoryNotFound)
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}
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request := client.NewClientWithConfig(args.FeedURL, config.Opts)
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request.WithCredentials(args.Username, args.Password)
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request.WithUserAgent(args.UserAgent)
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if args.FetchViaProxy {
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request.WithProxy()
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}
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response, requestErr := browser.Exec(request)
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if requestErr != nil {
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return nil, requestErr
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}
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if store.FeedURLExists(args.UserID, response.EffectiveURL) {
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return nil, errors.NewLocalizedError(errDuplicate, response.EffectiveURL)
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}
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subscription, parseErr := parser.ParseFeed(response.EffectiveURL, response.BodyAsString())
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if parseErr != nil {
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return nil, parseErr
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}
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subscription.UserID = args.UserID
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subscription.UserAgent = args.UserAgent
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subscription.Username = args.Username
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subscription.Password = args.Password
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subscription.Crawler = args.Crawler
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subscription.Disabled = args.Disabled
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subscription.IgnoreHTTPCache = args.IgnoreHTTPCache
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subscription.FetchViaProxy = args.FetchViaProxy
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subscription.ScraperRules = args.ScraperRules
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subscription.RewriteRules = args.RewriteRules
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subscription.BlocklistRules = args.BlocklistRules
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subscription.KeeplistRules = args.KeeplistRules
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subscription.WithCategoryID(args.CategoryID)
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subscription.WithClientResponse(response)
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subscription.CheckedNow()
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processor.ProcessFeedEntries(store, subscription)
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if storeErr := store.CreateFeed(subscription); storeErr != nil {
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return nil, storeErr
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}
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logger.Debug("[CreateFeed] Feed saved with ID: %d", subscription.ID)
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checkFeedIcon(store, subscription.ID, subscription.SiteURL, args.FetchViaProxy)
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return subscription, nil
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}
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// RefreshFeed refreshes a feed.
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func RefreshFeed(store *storage.Storage, userID, feedID int64) error {
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defer timer.ExecutionTime(time.Now(), fmt.Sprintf("[RefreshFeed] feedID=%d", feedID))
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userLanguage := store.UserLanguage(userID)
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printer := locale.NewPrinter(userLanguage)
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originalFeed, storeErr := store.FeedByID(userID, feedID)
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if storeErr != nil {
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return storeErr
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}
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if originalFeed == nil {
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return errors.NewLocalizedError(errNotFound, feedID)
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}
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weeklyEntryCount := 0
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if config.Opts.PollingScheduler() == model.SchedulerEntryFrequency {
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var weeklyCountErr error
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weeklyEntryCount, weeklyCountErr = store.WeeklyFeedEntryCount(userID, feedID)
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if weeklyCountErr != nil {
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return weeklyCountErr
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}
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}
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originalFeed.CheckedNow()
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originalFeed.ScheduleNextCheck(weeklyEntryCount)
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request := client.NewClientWithConfig(originalFeed.FeedURL, config.Opts)
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request.WithCredentials(originalFeed.Username, originalFeed.Password)
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request.WithUserAgent(originalFeed.UserAgent)
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if !originalFeed.IgnoreHTTPCache {
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request.WithCacheHeaders(originalFeed.EtagHeader, originalFeed.LastModifiedHeader)
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}
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if originalFeed.FetchViaProxy {
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request.WithProxy()
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}
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response, requestErr := browser.Exec(request)
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if requestErr != nil {
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originalFeed.WithError(requestErr.Localize(printer))
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store.UpdateFeedError(originalFeed)
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return requestErr
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}
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if store.AnotherFeedURLExists(userID, originalFeed.ID, response.EffectiveURL) {
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storeErr := errors.NewLocalizedError(errDuplicate, response.EffectiveURL)
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originalFeed.WithError(storeErr.Error())
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store.UpdateFeedError(originalFeed)
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return storeErr
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}
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if originalFeed.IgnoreHTTPCache || response.IsModified(originalFeed.EtagHeader, originalFeed.LastModifiedHeader) {
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logger.Debug("[RefreshFeed] Feed #%d has been modified", feedID)
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updatedFeed, parseErr := parser.ParseFeed(response.EffectiveURL, response.BodyAsString())
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if parseErr != nil {
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originalFeed.WithError(parseErr.Localize(printer))
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store.UpdateFeedError(originalFeed)
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return parseErr
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}
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originalFeed.Entries = updatedFeed.Entries
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processor.ProcessFeedEntries(store, originalFeed)
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// We don't update existing entries when the crawler is enabled (we crawl only inexisting entries).
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if storeErr := store.RefreshFeedEntries(originalFeed.UserID, originalFeed.ID, originalFeed.Entries, !originalFeed.Crawler); storeErr != nil {
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originalFeed.WithError(storeErr.Error())
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store.UpdateFeedError(originalFeed)
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return storeErr
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}
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// We update caching headers only if the feed has been modified,
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// because some websites don't return the same headers when replying with a 304.
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originalFeed.WithClientResponse(response)
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checkFeedIcon(store, originalFeed.ID, originalFeed.SiteURL, originalFeed.FetchViaProxy)
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} else {
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logger.Debug("[RefreshFeed] Feed #%d not modified", feedID)
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}
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originalFeed.ResetErrorCounter()
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if storeErr := store.UpdateFeed(originalFeed); storeErr != nil {
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originalFeed.WithError(storeErr.Error())
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store.UpdateFeedError(originalFeed)
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return storeErr
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}
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return nil
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}
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func checkFeedIcon(store *storage.Storage, feedID int64, websiteURL string, fetchViaProxy bool) {
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if !store.HasIcon(feedID) {
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icon, err := icon.FindIcon(websiteURL, fetchViaProxy)
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if err != nil {
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logger.Debug(`[CheckFeedIcon] %v (feedID=%d websiteURL=%s)`, err, feedID, websiteURL)
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} else if icon == nil {
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logger.Debug(`[CheckFeedIcon] No icon found (feedID=%d websiteURL=%s)`, feedID, websiteURL)
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} else {
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if err := store.CreateFeedIcon(feedID, icon); err != nil {
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logger.Debug(`[CheckFeedIcon] %v (feedID=%d websiteURL=%s)`, err, feedID, websiteURL)
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}
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}
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}
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}
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