feat(pin): Store pinned state in a file within the container

Signed-off-by: Louis Chmn <louis@chmn.me>

src/cloud.rs

@@ -2,12 +2,12 @@ use crate::config::{HazeConfig, HazeVolumeConfig};
 use crate::database::Database;
 use crate::exec::{exec, exec_io, exec_tty, ExitCode};
 use crate::mapping::{for_config, Mapping};
-use crate::php::{PhpVersion, PHP_MEMORY_LIMIT};
+use crate::php::PhpVersion;
 use crate::service::Service;
 use crate::service::ServiceTrait;
 use crate::sources::download_nc;
 use bollard::config::NetworkCreateRequest;
-use bollard::models::{ContainerState, ContainerUpdateBody};
+use bollard::models::ContainerState;
 use bollard::query_parameters::{ListContainersOptions, RemoveContainerOptions};
 use bollard::Docker;
 use camino::{Utf8Path, Utf8PathBuf};
@@ -51,6 +51,8 @@ fn get_max_php_version(base_path: &Utf8Path) -> Option<PhpVersion> {
     PhpVersion::from_number(major, minor)
 }
 
+const PINNED_FILE: &str = "/var/www/html/data/.haze-pinned";
+
 #[derive(Clone, Debug, Eq, PartialEq, Default)]
 pub struct CloudOptions {
     pub name: Option<String>,
@@ -226,7 +228,6 @@ pub struct Cloud {
     pub ip: Option<IpAddr>,
     pub workdir: Utf8PathBuf,
     pub options: CloudOptions,
-    pub pinned: bool,
     pub address: String,
     pub preset_config: HashMap<String, Value>,
 }
@@ -555,7 +556,6 @@ impl Cloud {
             ip: Some(ip),
             workdir,
             options,
-            pinned: false,
             address,
             preset_config,
         })
@@ -671,7 +671,7 @@ impl Cloud {
             }))
             .await
             .into_diagnostic()?;
-        let mut containers_by_id: HashMap<String, (Option<_>, Option<_>, Vec<_>)> = HashMap::new();
+        let mut containers_by_id: HashMap<String, (Option<_>, Vec<_>)> = HashMap::new();
         for container in containers {
             let labels = container.labels.clone().unwrap_or_default();
             if let Some(cloud_id) = labels.get("haze-cloud-id") {
@@ -681,11 +681,9 @@ impl Cloud {
                 } {
                     let entry = containers_by_id.entry(cloud_id.to_string()).or_default();
                     if labels.get("haze-type").map(String::as_str) == Some("cloud") {
-                        let info = docker.inspect_container(cloud_id, None).await.ok();
                         entry.0 = Some(container);
-                        entry.1 = info;
                     } else {
-                        entry.2.push(container)
+                        entry.1.push(container)
                     }
                 }
             }
@@ -693,7 +691,7 @@ impl Cloud {
 
         let mut sortable_containers: Vec<_> = containers_by_id
             .into_iter()
-            .filter_map(|(id, (cloud, info, services))| {
+            .filter_map(|(id, (cloud, services))| {
                 let cloud = cloud?;
                 let network = id.clone();
                 let networks = cloud.network_settings?.networks?;
@@ -719,13 +717,6 @@ impl Cloud {
                     .filter_map(|service| service.names.as_ref()?.first().cloned())
                     .collect();
 
-                let pinned = (info
-                    .and_then(|info| info.host_config)
-                    .and_then(|host| host.memory)
-                    .unwrap()
-                    % 2)
-                    == 1;
-
                 let ip = network_info.ip_address.as_ref()?.parse().ok();
                 let address = if let Some(ip) = ip {
                     config.proxy.addr(&id, ip)
@@ -750,7 +741,6 @@ impl Cloud {
                             app_packages: vec![],
                             version,
                         },
-                        pinned,
                         address,
                         preset_config: HashMap::default(),
                     },
@@ -814,32 +804,28 @@ impl Cloud {
         Ok(())
     }
 
-    pub async fn pin(&self, docker: &Docker) -> Result<()> {
-        // abuse memory limits as editable label
-        docker
-            .update_container(
-                &self.id,
-                ContainerUpdateBody {
-                    memory: Some(PHP_MEMORY_LIMIT + 1),
-                    ..ContainerUpdateBody::default()
-                },
+    pub async fn is_pinned(&self, docker: &Docker) -> Result<bool> {
+        let mut content = Vec::new();
+        self.exec_with_output(
+            docker,
+            vec!["cat", PINNED_FILE],
+            Some(&mut content),
+            Vec::<String>::new(),
         )
-            .await
+        .await?
+        .to_result()?;
+
+        String::from_utf8(content)
             .into_diagnostic()
+            .map(|content| content.trim() == "1")
+    }
+
+    pub async fn pin(&self, docker: &Docker) -> Result<()> {
+        self.write_file(docker, PINNED_FILE, "1").await
     }
 
     pub async fn unpin(&self, docker: &Docker) -> Result<()> {
-        // abuse memory limits as editable label
-        docker
-            .update_container(
-                &self.id,
-                ContainerUpdateBody {
-                    memory: Some(PHP_MEMORY_LIMIT),
-                    ..ContainerUpdateBody::default()
-                },
-            )
-            .await
-            .into_diagnostic()
+        self.write_file(docker, PINNED_FILE, "0").await
     }
 
     pub fn services(&self) -> impl Iterator<Item = &Service> {

src/main.rs

@@ -68,9 +68,15 @@ async fn main() -> Result<ExitCode> {
     match args {
         HazeArgs::Clean => {
             let list = Cloud::list(&docker, None, &config).await?;
-            let (retain, remove) = list
-                .into_iter()
-                .partition::<Vec<_>, _>(|cloud| cloud.pinned);
+            let mut retain = Vec::new();
+            let mut remove = Vec::new();
+            for cloud in list {
+                if cloud.is_pinned(&docker).await.unwrap_or(false) {
+                    retain.push(cloud);
+                } else {
+                    remove.push(cloud);
+                }
+            }
 
             for cloud in remove {
                 if let Err(e) = cloud.destroy(&docker).await {
@@ -102,7 +108,11 @@ async fn main() -> Result<ExitCode> {
                 let mut services: Vec<_> = cloud.services().map(Service::name).collect();
                 services.push(cloud.db().name());
                 let services = services.join(", ");
-                let pin = if cloud.pinned { "*" } else { "" };
+                let pin = if cloud.is_pinned(&docker).await.unwrap_or(false) {
+                    "*"
+                } else {
+                    ""
+                };
                 let version = match cloud.options.version.as_ref() {
                     Some(version) => format!(", v{version}"),
                     None => String::new(),