Cargo.toml

@@ -5,18 +5,17 @@ authors = ["Felix Ableitner"]
 edition = "2018"
 
 [dependencies]
-reqwest = { version = "0.11.13", default-features = false, features = ["json", "rustls-tls"] }
-serde = { version = "1.0.149", features = ["derive"] }
-anyhow = "1.0.66"
-tokio = { version = "1.22.0", features = ["macros", "rt-multi-thread"] }
-futures = "0.3.25"
-serde_json = "1.0.89"
-semver = "1.0.14"
-once_cell = "1.16.0"
-lemmy_api_common = "=0.16.0"
-lemmy_db_schema = "=0.16.0"
+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"
+semver = "1.0.9"
+once_cell = "1.10.0"
+lemmy_api_common = "0.16.0"
 async-recursion = "1.0.0"
 log = "0.4.17"
 derive-new = "0.5.9"
-stderrlog = "0.5.4"
+stderrlog = "0.5.1"
 structopt = "0.3.26"

src/crawl.rs

@@ -1,12 +1,12 @@
-use crate::node_info::{NodeInfo, NodeInfoWellKnown};
 use crate::CLIENT;
-use anyhow::{anyhow, Error};
+use crate::REQUEST_TIMEOUT;
+use anyhow::Error;
 use async_recursion::async_recursion;
 use futures::future::join_all;
 use lemmy_api_common::site::GetSiteResponse;
 use log::debug;
-use reqwest::Url;
 use semver::Version;
+use serde::Serialize;
 use std::collections::HashSet;
 use std::ops::Deref;
 use std::sync::Arc;
@@ -27,16 +27,15 @@ pub struct CrawlParams {
     crawled_instances: Arc<Mutex<HashSet<String>>>,
 }
 
-#[derive(Debug)]
-pub struct CrawlResult {
+#[derive(Serialize, Debug)]
+pub struct InstanceDetails {
     pub domain: String,
-    pub node_info: NodeInfo,
-    pub site_info: Option<GetSiteResponse>,
+    pub site_info: GetSiteResponse,
 }
 
 impl CrawlJob {
     #[async_recursion]
-    pub async fn crawl(self) -> Vec<Result<CrawlResult, Error>> {
+    pub async fn crawl(self) -> Vec<Result<InstanceDetails, Error>> {
         // need to acquire and release mutex before recursing, otherwise it will deadlock
         {
             let mut crawled_instances = self.params.crawled_instances.deref().lock().await;
@@ -53,83 +52,46 @@ impl CrawlJob {
             return vec![];
         }
 
-        debug!(
-            "Starting crawl for {}, distance {}",
-            &self.domain, &self.current_distance
-        );
-        let (node_info, site_info) = match self.fetch_instance_details().await {
+        debug!("Starting crawl for {}, distance {}", &self.domain, &self.current_distance);
+        let site_info = match self.fetch_instance_details().await {
             Ok(o) => o,
             Err(e) => return vec![Err(e)],
         };
-        let mut crawl_result = CrawlResult {
-            domain: self.domain.clone(),
-            node_info,
-            site_info: None,
-        };
 
-        if let Some(site_info) = site_info {
-            match Version::parse(&site_info.version) {
-                Ok(version) => {
-                    if version < self.params.min_lemmy_version {
-                        return vec![Ok(crawl_result)];
-                    }
-                }
-                Err(e) => return vec![Err(e.into())],
+        if site_info.1 < self.params.min_lemmy_version {
+            return vec![];
         }
 
         let mut result = vec![];
-            if let Some(federated) = &site_info.federated_instances {
+        if let Some(federated) = &site_info.0.federated_instances {
             for domain in federated.linked.iter() {
-                    let crawl_job = CrawlJob::new(
-                        domain.clone(),
-                        self.current_distance + 1,
-                        self.params.clone(),
-                    );
+                let crawl_job =
+                    CrawlJob::new(domain.clone(), self.current_distance + 1, self.params.clone());
                 result.push(crawl_job.crawl());
             }
         }
 
-            let mut result2: Vec<Result<CrawlResult, Error>> =
+        let mut result2: Vec<Result<InstanceDetails, Error>> =
             join_all(result).await.into_iter().flatten().collect();
         debug!("Successfully finished crawl for {}", &self.domain);
-            crawl_result.site_info = Some(site_info);
-            result2.push(Ok(crawl_result));
+        result2.push(Ok(InstanceDetails {
+            domain: self.domain,
+            site_info: site_info.0,
+        }));
 
         result2
-        } else {
-            vec![Ok(crawl_result)]
-        }
     }
 
-    async fn fetch_instance_details(&self) -> Result<(NodeInfo, Option<GetSiteResponse>), Error> {
-        let rel_node_info: Url = Url::parse("http://nodeinfo.diaspora.software/ns/schema/2.0")
-            .expect("parse nodeinfo relation url");
-        let node_info_well_known = CLIENT
-            .get(&format!("https://{}/.well-known/nodeinfo", &self.domain))
-            .send()
-            .await?
-            .json::<NodeInfoWellKnown>()
-            .await?;
-        let node_info_url = node_info_well_known
-            .links
-            .into_iter()
-            .find(|l| l.rel == rel_node_info)
-            .ok_or_else(|| anyhow!("failed to find nodeinfo link for {}", &self.domain))?
-            .href;
-        let node_info = CLIENT
-            .get(node_info_url)
-            .send()
-            .await?
-            .json::<NodeInfo>()
-            .await?;
-
+    async fn fetch_instance_details(&self) -> Result<(GetSiteResponse, Version), Error> {
+        let site_info_url = format!("https://{}/api/v3/site", &self.domain);
         let site_info = CLIENT
-            .get(&format!("https://{}/api/v3/site", &self.domain))
+            .get(&site_info_url)
+            .timeout(REQUEST_TIMEOUT)
             .send()
             .await?
             .json::<GetSiteResponse>()
-            .await
-            .ok();
-        Ok((node_info, site_info))
+            .await?;
+        let version = Version::parse(&site_info.version)?;
+        Ok((site_info, version))
     }
 }

src/lib.rs

@@ -1,46 +1,28 @@
 #[macro_use]
 extern crate derive_new;
 
-use crate::crawl::{CrawlJob, CrawlParams, CrawlResult};
-use crate::node_info::{NodeInfo, NodeInfoUsage, NodeInfoUsers};
+use crate::crawl::{CrawlJob, CrawlParams, InstanceDetails};
 use anyhow::Error;
 use futures::future::join_all;
-use lemmy_api_common::site::GetSiteResponse;
-use log::warn;
 use once_cell::sync::Lazy;
-use reqwest::{Client, ClientBuilder};
+use reqwest::Client;
 use semver::Version;
-use serde::Serialize;
 use std::collections::HashSet;
 use std::sync::Arc;
 use std::time::Duration;
 use tokio::sync::Mutex;
 
 pub mod crawl;
-mod node_info;
 
-const REQUEST_TIMEOUT: Duration = Duration::from_secs(10);
+pub const REQUEST_TIMEOUT: Duration = Duration::from_secs(10);
 
-static CLIENT: Lazy<Client> = Lazy::new(|| {
-    ClientBuilder::new()
-        .timeout(REQUEST_TIMEOUT)
-        .user_agent("lemmy-stats-crawler")
-        .build()
-        .expect("build reqwest client")
-});
-
-#[derive(Serialize, Debug)]
-pub struct CrawlResult2 {
-    pub domain: String,
-    pub site_info: GetSiteResponse,
-    pub federated_counts: Option<NodeInfoUsage>,
-}
+static CLIENT: Lazy<Client> = Lazy::new(Client::default);
 
 pub async fn start_crawl(
     start_instances: Vec<String>,
     exclude_domains: Vec<String>,
     max_distance: i32,
-) -> Result<Vec<CrawlResult2>, Error> {
+) -> Result<Vec<InstanceDetails>, Error> {
     let params = Arc::new(CrawlParams::new(
         min_lemmy_version().await?,
         exclude_domains,
@@ -53,29 +35,25 @@ pub async fn start_crawl(
         jobs.push(job.crawl());
     }
 
-    let crawl_results: Vec<CrawlResult> = join_all(jobs)
+    // TODO: log the errors
+    let mut instance_details: Vec<InstanceDetails> = join_all(jobs)
         .await
         .into_iter()
         .flatten()
-        .inspect(|r| {
-            if let Err(e) = r {
-                warn!("{}", e)
-            }
-        })
-        .filter_map(Result::ok)
+        .filter_map(|r| r.ok())
         .collect();
-    let mut crawl_results = calculate_federated_site_aggregates(crawl_results)?;
 
     // Sort by active monthly users descending
-    crawl_results.sort_unstable_by_key(|i| {
+    instance_details.sort_unstable_by_key(|i| {
         i.site_info
             .site_view
             .as_ref()
             .map(|s| s.counts.users_active_month)
             .unwrap_or(0)
     });
-    crawl_results.reverse();
-    Ok(crawl_results)
+    instance_details.reverse();
+
+    Ok(instance_details)
 }
 
 /// calculate minimum allowed lemmy version based on current version. in case of current version
@@ -92,47 +70,3 @@ async fn min_lemmy_version() -> Result<Version, Error> {
     version.minor -= 1;
     Ok(version)
 }
-
-fn calculate_federated_site_aggregates(
-    crawl_results: Vec<CrawlResult>,
-) -> Result<Vec<CrawlResult2>, Error> {
-    let node_info: Vec<(String, NodeInfo)> = crawl_results
-        .iter()
-        .map(|c| (c.domain.clone(), c.node_info.clone()))
-        .collect();
-    let lemmy_instances: Vec<(String, GetSiteResponse)> = crawl_results
-        .into_iter()
-        .filter_map(|c| {
-            let domain = c.domain;
-            c.site_info.map(|c2| (domain, c2))
-        })
-        .collect();
-    let mut ret = vec![];
-    for instance in &lemmy_instances {
-        let federated_counts = if let Some(federated_instances) = &instance.1.federated_instances {
-            node_info
-                .iter()
-                .filter(|i| federated_instances.linked.contains(&i.0) || i.0 == instance.0)
-                .map(|i| i.1.usage.clone())
-                .reduce(|a, b| NodeInfoUsage {
-                    users: NodeInfoUsers {
-                        total: a.users.total + b.users.total,
-                        active_halfyear: a.users.active_halfyear + b.users.active_halfyear,
-                        active_month: a.users.active_month + b.users.active_month,
-                    },
-                    posts: a.posts + b.posts,
-                    comments: a.comments + b.comments,
-                })
-        } else {
-            None
-        };
-        // TODO: workaround because GetSiteResponse doesnt implement clone
-        let site_info = serde_json::from_str(&serde_json::to_string(&instance.1)?)?;
-        ret.push(CrawlResult2 {
-            domain: instance.0.clone(),
-            site_info,
-            federated_counts,
-        });
-    }
-    Ok(ret)
-}

src/main.rs

@@ -1,25 +1,25 @@
 use anyhow::Error;
-use lemmy_stats_crawler::{start_crawl, CrawlResult2};
+use lemmy_stats_crawler::crawl::InstanceDetails;
+use lemmy_stats_crawler::start_crawl;
 use serde::Serialize;
 use structopt::StructOpt;
 
 #[derive(StructOpt, Debug)]
 #[structopt()]
 struct Parameters {
-    #[structopt(short, long, use_delimiter = true, default_value = "lemmy.ml")]
+    #[structopt(short, long, default_value = "lemmy.ml")]
     start_instances: Vec<String>,
-    #[structopt(
-        short,
-        long,
-        use_delimiter = true,
-        default_value = "ds9.lemmy.ml,enterprise.lemmy.ml,voyager.lemmy.ml,test.lemmy.ml"
-    )]
+    #[structopt(short, long, default_value = "ds9.lemmy.ml, enterprise.lemmy.ml, voyager.lemmy.ml, test.lemmy.ml")]
     exclude_instances: Vec<String>,
     #[structopt(short, long, default_value = "20")]
     max_crawl_distance: i32,
+
     /// Silence all output
     #[structopt(short, long)]
     quiet: bool,
+    /// Verbose mode (-v, -vv, -vvv, etc)
+    #[structopt(short = "v", long = "verbose", parse(from_occurrences))]
+    verbose: usize,
 }
 
 #[tokio::main]
@@ -29,7 +29,7 @@ pub async fn main() -> Result<(), Error> {
     stderrlog::new()
         .module(module_path!())
         .quiet(params.quiet)
-        .verbosity(1)
+        .verbosity(params.verbose)
         .init()?;
 
     eprintln!("Crawling...");
@@ -56,10 +56,10 @@ struct TotalStats {
     users_active_week: i64,
     users_active_month: i64,
     users_active_halfyear: i64,
-    instance_details: Vec<CrawlResult2>,
+    instance_details: Vec<InstanceDetails>,
 }
 
-fn aggregate(instance_details: Vec<CrawlResult2>) -> TotalStats {
+fn aggregate(instance_details: Vec<InstanceDetails>) -> TotalStats {
     let mut online_users = 0;
     let mut total_users = 0;
     let mut users_active_day = 0;

src/node_info.rs

@@ -1,47 +0,0 @@
-use reqwest::Url;
-use serde::{Deserialize, Serialize};
-
-#[derive(Deserialize, Debug)]
-pub struct NodeInfoWellKnown {
-    pub links: Vec<NodeInfoWellKnownLinks>,
-}
-
-#[derive(Deserialize, Debug)]
-pub struct NodeInfoWellKnownLinks {
-    pub rel: Url,
-    pub href: Url,
-}
-
-#[derive(Deserialize, Debug, Clone)]
-#[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, Clone)]
-pub struct NodeInfoSoftware {
-    pub name: String,
-    pub version: String,
-}
-
-#[derive(Deserialize, Serialize, Debug, Clone, Default)]
-#[serde(rename_all = "camelCase", default)]
-pub struct NodeInfoUsage {
-    pub users: NodeInfoUsers,
-    #[serde(rename(deserialize = "localPosts"))]
-    pub posts: i64,
-    #[serde(rename(deserialize = "localComments"))]
-    pub comments: i64,
-}
-
-#[derive(Deserialize, Serialize, Debug, Clone, Default)]
-#[serde(rename_all = "camelCase", default)]
-pub struct NodeInfoUsers {
-    pub total: i64,
-    pub active_halfyear: i64,
-    pub active_month: i64,
-}