Cargo.toml

@@ -5,12 +5,13 @@ authors = ["Felix Ableitner"]
 edition = "2018"
 
 [dependencies]
-reqwest = { version = "0.10.10", default-features = false, features = ["json", "rustls-tls"] }
-serde = { version = "1.0.123", features = ["derive"] }
-anyhow = "1.0.38"
-tokio = { version = "0.2.25", features = ["rt-threaded", "macros"] }
-futures = "0.3.13"
-serde_json = "1.0.64"
-clap = "2.33.3"
-semver = "1.0.7"
+reqwest = { version = "0.11.10", default-features = false, features = ["json", "rustls-tls"] }
+serde = { version = "1.0.137", features = ["derive"] }
+anyhow = "1.0.57"
+tokio = { version = "1.18.1", features = ["macros", "rt-multi-thread"] }
+futures = "0.3.21"
+serde_json = "1.0.81"
+clap = "3.1.15"
+semver = "1.0.9"
 once_cell = "1.10.0"
+lemmy_api_common = "0.16.0"

src/crawl.rs

@@ -1,9 +1,7 @@
-use crate::federated_instances::GetSiteResponse;
-use crate::node_info::NodeInfo;
 use crate::REQUEST_TIMEOUT;
 use anyhow::anyhow;
 use anyhow::Error;
-use futures::try_join;
+use lemmy_api_common::site::GetSiteResponse;
 use once_cell::sync::Lazy;
 use reqwest::Client;
 use semver::Version;
@@ -32,15 +30,17 @@ pub async fn crawl(
         }
         match fetch_instance_details(&current_instance.domain, &min_lemmy_version).await {
             Ok(details) => {
-                instance_details.push(details.to_owned());
-                for i in details.linked_instances {
-                    let is_in_crawled = crawled_instances.contains(&i);
-                    let is_in_pending = pending_instances.iter().any(|p| p.domain == i);
-                    if !is_in_crawled && !is_in_pending {
-                        let ci = CrawlInstance::new(i, current_instance.depth + 1);
-                        pending_instances.push_back(ci);
+                if let Some(federated) = &details.site_info.federated_instances.as_ref() {
+                    for i in &federated.linked {
+                        let is_in_crawled = crawled_instances.contains(i);
+                        let is_in_pending = pending_instances.iter().any(|p| &p.domain == i);
+                        if !is_in_crawled && !is_in_pending {
+                            let ci = CrawlInstance::new(i.clone(), current_instance.depth + 1);
+                            pending_instances.push_back(ci);
+                        }
                     }
                 }
+                instance_details.push(details);
             }
             Err(e) => {
                 failed_instances += 1;
@@ -50,29 +50,22 @@ pub async fn crawl(
     }
 
     // Sort by active monthly users descending
-    instance_details.sort_by_key(|i| i.users_active_month);
+    instance_details.sort_by_key(|i| {
+        i.site_info
+            .site_view
+            .as_ref()
+            .map(|s| s.counts.users_active_month)
+            .unwrap_or(0)
+    });
     instance_details.reverse();
 
     Ok((instance_details, failed_instances))
 }
 
-#[derive(Serialize, Clone)]
+#[derive(Serialize, Debug)]
 pub struct InstanceDetails {
     pub domain: String,
-    pub name: String,
-    pub description: Option<String>,
-    pub version: String,
-    pub icon: Option<String>,
-    pub online_users: i32,
-    pub total_users: i64,
-    pub users_active_halfyear: i64,
-    pub users_active_month: i64,
-    pub open_registrations: bool,
-    pub linked_instances_count: i32,
-    pub require_application: bool,
-    // The following fields are only used for aggregation, but not shown in output
-    #[serde(skip)]
-    pub linked_instances: Vec<String>,
+    pub site_info: GetSiteResponse,
 }
 
 struct CrawlInstance {
@@ -92,75 +85,23 @@ async fn fetch_instance_details(
 ) -> Result<InstanceDetails, Error> {
     let client = Client::default();
 
-    let node_info_url = format!("https://{}/nodeinfo/2.0.json", domain);
-    let node_info_request = client.get(&node_info_url).timeout(REQUEST_TIMEOUT).send();
-
-    let site_info_url_v2 = format!("https://{}/api/v2/site", domain);
-    let site_info_request_v2 = client
-        .get(&site_info_url_v2)
+    let site_info_url = format!("https://{}/api/v3/site", domain);
+    let site_info = client
+        .get(&site_info_url)
         .timeout(REQUEST_TIMEOUT)
-        .send();
-    let site_info_url_v3 = format!("https://{}/api/v3/site", domain);
-    let site_info_request_v3 = client
-        .get(&site_info_url_v3)
-        .timeout(REQUEST_TIMEOUT)
-        .send();
+        .send()
+        .await?
+        .json::<GetSiteResponse>()
+        .await?;
 
-    let (node_info, site_info_v2, site_info_v3) = try_join!(
-        node_info_request,
-        site_info_request_v2,
-        site_info_request_v3
-    )?;
-    let node_info: NodeInfo = node_info.json().await?;
-    if node_info.software.name != "lemmy" {
-        return Err(anyhow!("not a lemmy instance"));
-    }
-    let version = Version::parse(&node_info.software.version)?;
+    let version = Version::parse(&site_info.version)?;
     if &version < min_lemmy_version {
         return Err(anyhow!("lemmy version is too old ({})", version));
     }
-    let site_info_v2 = site_info_v2.json::<GetSiteResponse>().await.ok();
-    let site_info_v3 = site_info_v3.json::<GetSiteResponse>().await.ok();
-    let mut site_info: GetSiteResponse = if let Some(site_info_v2) = site_info_v2 {
-        site_info_v2
-    } else if let Some(site_info_v3) = site_info_v3 {
-        site_info_v3
-    } else {
-        return Err(anyhow!("Failed to read site_info"));
-    };
 
-    if let Some(description) = &site_info.site_view.site.description {
-        if description.len() > 150 {
-            site_info.site_view.site.description = None;
-        }
-    }
-
-    let require_application = site_info
-        .site_view
-        .site
-        .require_application
-        .unwrap_or(false);
-    let linked_instances: Vec<String> = site_info
-        .federated_instances
-        .map(|f| f.linked)
-        .unwrap_or_default()
-        .iter()
-        .map(|l| l.to_lowercase())
-        .collect();
     Ok(InstanceDetails {
         domain: domain.to_owned(),
-        name: site_info.site_view.site.name,
-        description: site_info.site_view.site.description,
-        version: node_info.software.version,
-        icon: site_info.site_view.site.icon,
-        online_users: site_info.online as i32,
-        total_users: node_info.usage.users.total,
-        users_active_halfyear: node_info.usage.users.active_halfyear,
-        users_active_month: node_info.usage.users.active_month,
-        open_registrations: node_info.open_registrations,
-        linked_instances_count: linked_instances.len() as i32,
-        require_application,
-        linked_instances,
+        site_info,
     })
 }
 

src/federated_instances.rs

@@ -1,28 +0,0 @@
-use serde::Deserialize;
-
-#[derive(Deserialize, Debug, Clone)]
-pub struct GetSiteResponse {
-    pub site_view: SiteView,
-    pub online: usize,
-    pub federated_instances: Option<FederatedInstances>,
-}
-
-#[derive(Deserialize, Debug, Clone)]
-pub struct FederatedInstances {
-    pub linked: Vec<String>,
-    pub allowed: Option<Vec<String>>,
-    pub blocked: Option<Vec<String>>,
-}
-
-#[derive(Deserialize, Debug, Clone)]
-pub struct SiteView {
-    pub site: Site,
-}
-
-#[derive(Deserialize, Debug, Clone)]
-pub struct Site {
-    pub name: String,
-    pub icon: Option<String>,
-    pub description: Option<String>,
-    pub require_application: Option<bool>,
-}

src/lib.rs

@@ -1,8 +1,6 @@
 use std::time::Duration;
 
 pub mod crawl;
-pub mod federated_instances;
-pub mod node_info;
 
 pub const REQUEST_TIMEOUT: Duration = Duration::from_secs(10);
 pub const DEFAULT_START_INSTANCES: &str = "lemmy.ml";

src/main.rs

@@ -1,20 +1,20 @@
 use anyhow::Error;
-use clap::{App, Arg};
+use clap::{Arg, Command};
 use lemmy_stats_crawler::crawl::{crawl, InstanceDetails};
 use lemmy_stats_crawler::{DEFAULT_MAX_CRAWL_DEPTH, DEFAULT_START_INSTANCES, EXCLUDE_INSTANCES};
 use serde::Serialize;
 
 #[tokio::main]
 pub async fn main() -> Result<(), Error> {
-    let matches = App::new("Lemmy Stats Crawler")
+    let matches = Command::new("Lemmy Stats Crawler")
         .arg(
-            Arg::with_name("start-instances")
+            Arg::new("start-instances")
                 .long("start-instances")
                 .takes_value(true),
         )
-        .arg(Arg::with_name("exclude").long("exclude").takes_value(true))
+        .arg(Arg::new("exclude").long("exclude").takes_value(true))
         .arg(
-            Arg::with_name("max-crawl-depth")
+            Arg::new("max-crawl-depth")
                 .long("max-crawl-depth")
                 .takes_value(true),
         )
@@ -49,25 +49,43 @@ pub async fn main() -> Result<(), Error> {
 struct TotalStats {
     crawled_instances: i32,
     failed_instances: i32,
+    online_users: usize,
     total_users: i64,
-    total_online_users: i32,
+    users_active_day: i64,
+    users_active_week: i64,
+    users_active_month: i64,
+    users_active_halfyear: i64,
     instance_details: Vec<InstanceDetails>,
 }
 
 fn aggregate(instance_details: Vec<InstanceDetails>, failed_instances: i32) -> TotalStats {
-    let mut crawled_instances = 0;
+    let mut online_users = 0;
     let mut total_users = 0;
-    let mut total_online_users = 0;
+    let mut users_active_day = 0;
+    let mut users_active_week = 0;
+    let mut users_active_month = 0;
+    let mut users_active_halfyear = 0;
+    let mut crawled_instances = 0;
     for i in &instance_details {
         crawled_instances += 1;
-        total_users += i.total_users;
-        total_online_users += i.online_users;
+        online_users += i.site_info.online;
+        if let Some(site_view) = &i.site_info.site_view {
+            total_users += site_view.counts.users;
+            users_active_day += site_view.counts.users_active_day;
+            users_active_week += site_view.counts.users_active_week;
+            users_active_month += site_view.counts.users_active_month;
+            users_active_halfyear += site_view.counts.users_active_half_year;
+        }
     }
     TotalStats {
         crawled_instances,
         failed_instances,
+        online_users,
         total_users,
-        total_online_users,
+        users_active_day,
+        users_active_week,
+        users_active_halfyear,
+        users_active_month,
         instance_details,
     }
 }

src/node_info.rs

@@ -1,33 +0,0 @@
-use serde::Deserialize;
-
-#[derive(Deserialize, Debug)]
-#[serde(rename_all = "camelCase")]
-pub struct NodeInfo {
-    pub version: String,
-    pub software: NodeInfoSoftware,
-    pub protocols: Vec<String>,
-    pub usage: NodeInfoUsage,
-    pub open_registrations: bool,
-}
-
-#[derive(Deserialize, Debug)]
-pub struct NodeInfoSoftware {
-    pub name: String,
-    pub version: String,
-}
-
-#[derive(Deserialize, Debug)]
-#[serde(rename_all = "camelCase")]
-pub struct NodeInfoUsage {
-    pub users: NodeInfoUsers,
-    pub local_posts: i64,
-    pub local_comments: i64,
-}
-
-#[derive(Deserialize, Debug)]
-#[serde(rename_all = "camelCase")]
-pub struct NodeInfoUsers {
-    pub total: i64,
-    pub active_halfyear: i64,
-    pub active_month: i64,
-}