rename backup-client to proxmox-backup-client

src/bin/proxmox-backup-client.rs

@@ -0,0 +1,155 @@
+extern crate proxmox_backup;
+
+use failure::*;
+use std::os::unix::io::AsRawFd;
+
+use proxmox_backup::tools;
+use proxmox_backup::cli::command::*;
+use proxmox_backup::api::schema::*;
+use proxmox_backup::api::router::*;
+//use proxmox_backup::backup::chunk_store::*;
+//use proxmox_backup::backup::image_index::*;
+//use proxmox_backup::config::datastore;
+use proxmox_backup::catar::encoder::*;
+use proxmox_backup::backup::datastore::*;
+use serde_json::{Value};
+
+fn required_string_param<'a>(param: &'a Value, name: &str) -> &'a str {
+    param[name].as_str().expect(&format!("missing parameter '{}'", name))
+}
+
+fn backup_dir(
+    datastore: &DataStore,
+    path: &str,
+    dir: &mut nix::dir::Dir,
+    target: &str,
+    chunk_size: usize,
+) -> Result<(), Error> {
+
+    let mut target = std::path::PathBuf::from(target);
+
+    if let Some(ext) = target.extension() {
+        if ext != "aidx" {
+            bail!("got wrong file extension - expected '.aidx'");
+        }
+    } else {
+        target.set_extension("aidx");
+    }
+
+    let mut index = datastore.create_archive_writer(&target, chunk_size)?;
+
+    let path = std::path::PathBuf::from(path);
+
+    CaTarEncoder::encode(path, dir, &mut index)?;
+
+    index.close()?; // commit changes
+
+    Ok(())
+}
+
+fn backup_image(datastore: &DataStore, file: &std::fs::File, size: usize, target: &str, chunk_size: usize) -> Result<(), Error> {
+
+    let mut target = std::path::PathBuf::from(target);
+
+    if let Some(ext) = target.extension() {
+        if ext != "iidx" {
+            bail!("got wrong file extension - expected '.iidx'");
+        }
+    } else {
+        target.set_extension("iidx");
+    }
+
+    let mut index = datastore.create_image_writer(&target, size, chunk_size)?;
+
+    tools::file_chunker(file, chunk_size, |pos, chunk| {
+        index.add_chunk(pos, chunk)?;
+        Ok(true)
+    })?;
+
+    index.close()?; // commit changes
+
+    Ok(())
+}
+
+fn create_backup(param: Value, _info: &ApiMethod) -> Result<Value, Error> {
+
+    let filename = required_string_param(&param, "filename");
+    let store = required_string_param(&param, "store");
+    let target = required_string_param(&param, "target");
+
+    let mut chunk_size = 4*1024*1024;
+
+    if let Some(size) = param["chunk-size"].as_u64() {
+        static SIZES: [u64; 7] = [64, 128, 256, 512, 1024, 2048, 4096];
+
+        if SIZES.contains(&size) {
+            chunk_size = (size as usize) * 1024;
+        } else {
+            bail!("Got unsupported chunk size '{}'", size);
+        }
+    }
+
+    let datastore = DataStore::open(store)?;
+
+    let file = std::fs::File::open(filename)?;
+    let rawfd = file.as_raw_fd();
+    let stat = nix::sys::stat::fstat(rawfd)?;
+
+    if (stat.st_mode & libc::S_IFDIR) != 0 {
+        println!("Backup directory '{}' to '{}'", filename, store);
+
+        let mut dir = nix::dir::Dir::from_fd(rawfd)?;
+
+        backup_dir(&datastore, &filename, &mut dir, &target, chunk_size)?;
+
+    } else if (stat.st_mode & (libc::S_IFREG|libc::S_IFBLK)) != 0 {
+        println!("Backup file '{}' to '{}'", filename, store);
+
+        if stat.st_size <= 0 { bail!("got strange file size '{}'", stat.st_size); }
+        let size = stat.st_size as usize;
+
+        backup_image(&datastore, &file, size, &target, chunk_size)?;
+
+       // let idx = datastore.open_image_reader(target)?;
+       // idx.print_info();
+
+    } else {
+        bail!("unsupported file type (expected a directory, file or block device)");
+    }
+
+    //datastore.garbage_collection()?;
+
+    Ok(Value::Null)
+}
+
+
+fn main() {
+
+    let cmd_def = CliCommand::new(
+        ApiMethod::new(
+            create_backup,
+            ObjectSchema::new("Create backup.")
+                .required("filename", StringSchema::new("Source name (file or directory name)"))
+                .required("store", StringSchema::new("Datastore name."))
+                .required("target", StringSchema::new("Target name."))
+                .optional(
+                    "chunk-size",
+                    IntegerSchema::new("Chunk size in KB. Must be a power of 2.")
+                        .minimum(64)
+                        .maximum(4096)
+                        .default(4096)
+                )
+        ))
+        .arg_param(vec!["filename", "target"])
+        .completion_cb("store", proxmox_backup::config::datastore::complete_datastore_name);
+
+
+    if let Err(err) = run_cli_command(&cmd_def.into()) {
+        eprintln!("Error: {}", err);
+        if err.downcast::<UsageError>().is_ok() {
+            print_cli_usage();
+        }
+        std::process::exit(-1);
+    }
+
+}