From cdb45e032b078156eddbd47cb350c6ae66a64098 Mon Sep 17 00:00:00 2001
From: Toby Vincent <tobyv13@gmail.com>
Date: Fri, 6 May 2022 14:27:17 -0500
Subject: refactor: generalize zfs impl into storage traits

---
 zone_core/src/container.rs | 125 ++++++++++++++++++++++-----------------------
 1 file changed, 62 insertions(+), 63 deletions(-)

(limited to 'zone_core/src/container.rs')

diff --git a/zone_core/src/container.rs b/zone_core/src/container.rs
index 71dfb73..db7458e 100644
--- a/zone_core/src/container.rs
+++ b/zone_core/src/container.rs
@@ -1,57 +1,92 @@
 use clap::Args;
-use derive_builder::Builder;
 use serde::{Deserialize, Serialize};
-use std::{fmt::Display, path::PathBuf};
+use std::{ffi::OsStr, fmt::Display, path::PathBuf};
 use tabled::Tabled;
 
 use crate::FilterContainer;
 
-pub use status::ContainerStatus;
+pub use self::error::ParsingError;
+pub use self::status::Status;
 
+mod error;
 mod status;
 
-#[derive(Debug, PartialEq, Default, Serialize, Deserialize, Builder, Tabled, Clone, Args)]
-#[builder(
-    name = "ContainerOptions",
-    derive(Debug, Serialize, Deserialize),
-    field(public)
-)]
+#[derive(Debug, PartialEq, Default, Serialize, Deserialize, Tabled, Clone, Args)]
 #[serde(rename_all = "camelCase")]
 pub struct Container {
     #[tabled("ID")]
-    pub id: u64,
+    pub id: u32,
 
     #[tabled("Template")]
-    pub parent: String,
+    pub template: String,
 
     #[tabled("User")]
-    pub user: String,
-}
-
-impl Container {
-    pub fn builder() -> ContainerOptions {
-        ContainerOptions::default()
-    }
+    pub owner: String,
 }
 
 impl Display for Container {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{}-{}-{}", self.user, self.parent, self.id)
+        write!(f, "{}-{}-{}", self.template, self.owner, self.id)
     }
 }
 
 impl From<Container> for String {
     fn from(c: Container) -> Self {
-        format!("{}-{}-{}", c.user, c.parent, c.id)
+        format!("{}-{}-{}", c.template, c.owner, c.id)
     }
 }
 
+impl From<Container> for PathBuf {
+    fn from(c: Container) -> Self {
+        PathBuf::from(format!("{}/{}/{}", c.template, c.owner, c.id))
+    }
+}
+
+impl TryFrom<String> for Container {
+    type Error = ParsingError;
+
+    fn try_from(s: String) -> Result<Self, Self::Error> {
+        let v = s.split('-').collect::<Vec<_>>();
+        match v[v.len() - 3..] {
+            [i, o, t] => Ok(Container {
+                id: i.parse()?,
+                owner: o.into(),
+                template: t.into(),
+            }),
+            _ => Err(s).map_err(ParsingError::from),
+        }
+    }
+}
+
+impl TryFrom<PathBuf> for Container {
+    type Error = ParsingError;
+
+    fn try_from(p: PathBuf) -> Result<Self, Self::Error> {
+        let v = p.iter().map(OsStr::to_str).collect::<Vec<_>>();
+        match v[v.len() - 3..] {
+            [Some(i), Some(o), Some(t)] => Ok(Container {
+                id: i.parse()?,
+                owner: o.into(),
+                template: t.into(),
+            }),
+            _ => Err(p).map_err(ParsingError::from),
+        }
+    }
+}
+
+#[derive(Debug, Default, Serialize, Deserialize)]
+pub struct ContainerOptions {
+    pub id: Option<u32>,
+    pub parent: Option<String>,
+    pub owner: Option<String>,
+}
+
 impl From<Container> for ContainerOptions {
     fn from(c: Container) -> Self {
         Self {
             id: Some(c.id),
-            parent: Some(c.parent),
-            user: Some(c.user),
+            parent: Some(c.template),
+            owner: Some(c.owner),
         }
     }
 }
@@ -60,8 +95,8 @@ impl From<&Container> for &ContainerOptions {
     fn from(c: &Container) -> Self {
         ContainerOptions {
             id: Some(c.id.to_owned()),
-            parent: Some(c.parent.to_owned()),
-            user: Some(c.user.to_owned()),
+            parent: Some(c.template.to_owned()),
+            owner: Some(c.owner.to_owned()),
         }
         .into()
     }
@@ -76,7 +111,7 @@ impl From<ContainerOptions> for &ContainerOptions {
 #[derive(Debug, Serialize, Deserialize, Clone, Args)]
 pub struct CloneOptions {
     pub template: String,
-    pub user: String,
+    pub owner: String,
 }
 
 impl<T> FilterContainer for T
@@ -88,45 +123,9 @@ where
         self.filter_map(|c| -> Option<Container> { c.try_into().ok() })
             .filter(|c| {
                 pred.id.map_or(false, |p| p == c.id)
-                    && pred.parent.as_ref().map_or(false, |p| p == &c.parent)
-                    && pred.user.as_ref().map_or(false, |p| p == &c.user)
+                    && pred.parent.as_ref().map_or(false, |p| p == &c.template)
+                    && pred.owner.as_ref().map_or(false, |p| p == &c.owner)
             })
             .collect()
     }
 }
-
-impl TryFrom<zone_zfs::FileSystem> for Container {
-    type Error = zone_zfs::Error;
-
-    fn try_from(fs: zone_zfs::FileSystem) -> zone_zfs::Result<Self> {
-        let path_buf = PathBuf::from(fs.dataset())
-            .file_name()
-            .ok_or_else(|| {
-                zone_zfs::Error::FileSystem(format!("Invalid FileSystem path: {:?}", fs))
-            })?
-            .to_string_lossy()
-            .into_owned();
-
-        let (user, id) = path_buf.rsplit_once('-').ok_or_else(|| {
-            zone_zfs::Error::FileSystem(format!("Invalid FileSystem name: {:?}", fs))
-        })?;
-
-        let id = id.parse::<u64>().map_err(|err| {
-            zone_zfs::Error::FileSystem(format!("Failed to parse container ID: {:?}", err))
-        })?;
-
-        let template = PathBuf::from(fs.dataset())
-            .parent()
-            .ok_or_else(|| {
-                zone_zfs::Error::FileSystem(format!("Invalid path for filesystem: {:?}", &fs))
-            })?
-            .to_string_lossy()
-            .into_owned();
-
-        Ok(Container {
-            id,
-            parent: template,
-            user: user.to_string(),
-        })
-    }
-}
-- 
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