コード例 #1
0
        private static void GetScrapees(Facebook fb)
        {
            log.Info("Verifying scrapees");
            using (var db = new FacebookDebatEntities())
            {
                var scrapees = db.Scrapees.Where(x => x.entity_id == null && x.enabled).ToList();
                log.Info("Found " + scrapees.Count + " new entities.");
                foreach (var scrapee in scrapees)
                {
                    try
                    {
                        var fb_entity = fb.GetUser(scrapee.fb_id);

                        var entity = new Entity
                        {
                            fb_id = fb_entity.fb_id,
                            name  = fb_entity.name
                        };

                        db.Entities.Add(entity);

                        scrapee.Entity = entity;
                        scrapee.name   = fb_entity.name;

                        db.Entry(scrapee).State = System.Data.Entity.EntityState.Modified;
                    }
                    catch (Exception) { }
                }
                log.Info("Done");
                db.SaveChanges();
            }
        }
コード例 #2
0
        private static void GetPosts(Facebook fb, int lookbackDays, DateTime dateFrom)
        {
            using (var db = new FacebookDebatEntities())
            {
                db.Configuration.AutoDetectChangesEnabled = false;
                var scrapees = db.Scrapees.Where(x => x.enabled).Select(x => new { name = x.name, entity = x.Entity }).ToList();

                log.Info("Getting posts for " + scrapees.Count + " scrapees.");
                // Get posts for each page
                Parallel.ForEach(scrapees, new ParallelOptions {
                    MaxDegreeOfParallelism = 15
                }, (scrapee) =>
                {
                    if (scrapee.entity == null)
                    {
                        return;
                    }

                    try
                    {
                        var fb_posts = fb.GetPosts(scrapee.entity.fb_id, lookbackDays, dateFrom);
                        foreach (var fb_post in fb_posts)
                        {
                            Post post;
                            lock (db)
                                post = db.Posts.SingleOrDefault(x => x.fb_id == fb_post.id);

                            if (post == null)
                            {
                                post = new Post()
                                {
                                    fb_id   = fb_post.id,
                                    message = fb_post.message,
                                    Entity  = scrapee.entity,
                                    date    = fb_post.date,
                                    shares  = fb_post.shares
                                };
                                lock (db)
                                    db.Posts.Add(post);
                            }
                            else
                            {
                                lock (db)
                                {
                                    if (post.message != fb_post.message || post.shares != fb_post.shares)
                                    {
                                        post.message         = fb_post.message;
                                        post.shares          = fb_post.shares;
                                        db.Entry(post).State = System.Data.Entity.EntityState.Modified;
                                    }
                                }
                            }
                        }
                        lock (db)
                            db.SaveChanges();
                    }
                    catch (Exception e)
                    {
                        log.Error("Problem with " + scrapee.name);
                        log.Error(e.ToString());
                    }
                });
                log.Info("Done.");
            }
        }