Add times and disk space to the report

Cargo.lock

@@ -423,6 +423,7 @@ dependencies = [
  "humansize",
  "indicatif",
  "itertools 0.10.3",
+ "libc",
  "log",
  "metrics",
  "serde",

datman/Cargo.toml

@@ -33,4 +33,5 @@ hostname = "0.3.1"
 yama = { path = "../yama", version = "0.6.0-alpha.1" }
 metrics = "0.17.1"
 bare-metrics-recorder = { version = "0.1.0" }
-comfy-table = "6.0.0-rc.1"
+comfy-table = "6.0.0-rc.1"
+libc = "0.2.126"

datman/src/bin/datman.rs

@@ -317,9 +317,9 @@ fn main() -> anyhow::Result<()> {
             let descriptor = load_descriptor(Path::new(".")).unwrap();
             let destination = &descriptor.piles[&pile_name];
             let report = datman::commands::report::generate_report(destination, &descriptor)?;
-            // TODO Display report
-            // TODO E-mail report (Can just pipe through aha and then apprise though!)
+            
             datman::commands::report::print_report(&report)?;
+            datman::commands::report::print_filesystem_space(&destination.path)?;
         }
     }
     Ok(())

datman/src/commands/report.rs

@@ -1,14 +1,19 @@
 use crate::commands::backup::split_pointer_name;
 use crate::descriptor::{Descriptor, DestPileDescriptor};
 use anyhow::Context;
-use chrono::{DateTime, Utc};
+use chrono::{Date, DateTime, Utc};
 use comfy_table::presets::UTF8_FULL;
-use comfy_table::{Cell, Color, ContentArrangement, Table};
+use comfy_table::{Attribute, Cell, Color, ContentArrangement, Table};
 use humansize::FileSize;
+use itertools::Itertools;
 use log::info;
 use std::collections::{BTreeMap, BTreeSet};
+use std::ffi::CString;
 use std::io::Read;
+use std::mem;
 use std::mem::size_of;
+use std::os::unix::ffi::OsStrExt;
+use std::path::Path;
 use yama::chunking::RecursiveUnchunker;
 use yama::commands::{load_pile_descriptor, open_pile, retrieve_tree_node};
 use yama::definitions::{ChunkId, RecursiveChunkRef, TreeNode};
@@ -212,10 +217,86 @@ fn collect_chunk_ids_from_chunkref<RP: RawPile>(
 }
 
 pub fn print_report(report: &Report) -> anyhow::Result<()> {
+    print_time_report(report)?;
+    print_size_report(report)?;
+    Ok(())
+}
+
+pub fn print_time_report(report: &Report) -> anyhow::Result<()> {
+    println!("\nBackup times");
     let mut table = Table::new();
     table
         .load_preset(UTF8_FULL)
-        .set_content_arrangement(ContentArrangement::DynamicFullWidth);
+        .set_content_arrangement(ContentArrangement::DynamicFullWidth)
+        .enforce_styling();
+
+    table.set_header(vec![
+        Cell::new("Source name").fg(Color::Cyan),
+        Cell::new("Last backed up").fg(Color::Cyan),
+    ]);
+
+    let today = Utc::today();
+
+    let sort_by_dates: Vec<(Option<Date<Utc>>, String)> = report
+        .last_source_backups
+        .iter()
+        .map(|(name, datetime)| (datetime.map(|dt| dt.date()), name.to_owned()))
+        .sorted()
+        .collect();
+
+    for (date, source_name) in sort_by_dates {
+        match date {
+            None => {
+                table.add_row(vec![
+                    Cell::new(source_name).fg(Color::Magenta),
+                    Cell::new("NEVER").fg(Color::Red).add_attributes(vec![
+                        Attribute::SlowBlink,
+                        Attribute::RapidBlink,
+                        Attribute::Bold,
+                    ]),
+                ]);
+            }
+            Some(date) => {
+                let number_of_days = today.signed_duration_since(date).num_days();
+                let num_days_human = if number_of_days > 0 {
+                    format!("{number_of_days} days ago")
+                } else {
+                    format!("today")
+                };
+
+                let colour = if number_of_days < 2 {
+                    Color::Green
+                } else if number_of_days < 14 {
+                    Color::Yellow
+                } else {
+                    Color::Red
+                };
+
+                let formatted_date = date.format("%F");
+
+                let mut val_cell =
+                    Cell::new(format!("{formatted_date} {num_days_human}")).fg(colour);
+                if number_of_days > 28 {
+                    val_cell = val_cell.add_attribute(Attribute::SlowBlink);
+                }
+
+                table.add_row(vec![Cell::new(source_name).fg(Color::Magenta), val_cell]);
+            }
+        }
+    }
+
+    println!("{table}");
+
+    Ok(())
+}
+
+pub fn print_size_report(report: &Report) -> anyhow::Result<()> {
+    println!("\nPile size");
+    let mut table = Table::new();
+    table
+        .load_preset(UTF8_FULL)
+        .set_content_arrangement(ContentArrangement::DynamicFullWidth)
+        .enforce_styling();
     //.set_width(100);
     table.set_header(vec![
         Cell::new("Pointer name").fg(Color::Cyan),
@@ -248,13 +329,76 @@ fn format_size(chunks: u32, average_chunk_size: Option<f64>) -> String {
     let est_size_suffix = average_chunk_size
         .map(|bytes_per_chunk| {
             let num_bytes = (chunks as f64 * bytes_per_chunk) as u64;
-            format!(
-                " ~{}",
-                num_bytes
-                    .file_size(humansize::file_size_opts::BINARY)
-                    .unwrap()
-            )
+            let mut format = humansize::file_size_opts::BINARY;
+            format.decimal_places = 1;
+            format!(" ~{}", num_bytes.file_size(format).unwrap())
         })
         .unwrap_or_default();
     format!("{} c{}", chunks, est_size_suffix)
 }
+
+pub fn print_filesystem_space(pile_path: &Path) -> anyhow::Result<()> {
+    let path_c = CString::new(pile_path.as_os_str().as_bytes()).unwrap();
+    let stats = unsafe {
+        let mut stats: libc::statfs = mem::zeroed();
+        match libc::statfs(path_c.as_ptr(), &mut stats) {
+            0 => Ok(stats),
+            other => Err(std::io::Error::from_raw_os_error(other)),
+        }
+    }?;
+
+    // On a BTRFS system with 2 disks in RAID1, note (about df -h):
+    // - 'Size' shows the average size of the two disks. I think of it as 'ideal size'.
+    // - 'Avail' seems to show the actual number of bytes usable.
+    // - 'Used' seems to show the actual number of bytes used.
+    // In short: probably avoid relying on 'size'.
+
+    let block_size = stats.f_bsize as i64;
+    let used_bytes = (stats.f_blocks - stats.f_bfree) as i64 * block_size;
+    let avail_bytes = stats.f_bavail as i64 * block_size;
+    let usable_bytes = used_bytes + avail_bytes;
+    let theoretical_size = stats.f_blocks as i64 * block_size;
+
+    let mut format = humansize::file_size_opts::BINARY;
+    format.decimal_places = 1;
+    format.decimal_zeroes = 1;
+
+    println!("\nFilesystem Information");
+
+    let mut table = Table::new();
+    table
+        .load_preset(UTF8_FULL)
+        .set_content_arrangement(ContentArrangement::DynamicFullWidth)
+        .enforce_styling();
+    //.set_width(100);
+    table.set_header(vec![
+        Cell::new("Theoretical Size").fg(Color::Cyan),
+        Cell::new("Usable Size").fg(Color::Cyan),
+        Cell::new("Used").fg(Color::Cyan),
+        Cell::new("Available").fg(Color::Cyan),
+    ]);
+
+    let available_space_colour = if avail_bytes < 8 * 1024 * 1024 * 1024 {
+        Color::Red
+    } else if avail_bytes < 64 * 1024 * 1024 * 1024 {
+        Color::Yellow
+    } else {
+        Color::Green
+    };
+
+    table.add_row(vec![
+        Cell::new(format!(
+            "{:>9}",
+            theoretical_size.file_size(&format).unwrap()
+        ))
+        .fg(Color::Blue),
+        Cell::new(format!("{:>9}", usable_bytes.file_size(&format).unwrap())).fg(Color::Blue),
+        Cell::new(format!("{:>9}", used_bytes.file_size(&format).unwrap())).fg(Color::Blue),
+        Cell::new(format!("{:>9}", avail_bytes.file_size(&format).unwrap()))
+            .fg(available_space_colour),
+    ]);
+
+    print!("{table}");
+
+    Ok(())
+}