commit 7d4a1ecd9b3c854ee2d5124b63a7506a8cdad576
Author: Jake Howard <jake.howard@torchbox.com>
Date:   Fri Nov 25 16:15:55 2022 +0000

    Proof of concept

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e065669
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
+backup.db
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..6aae783
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,213 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
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+dependencies = [
+ "getrandom",
+ "once_cell",
+ "version_check",
+]
+
+[[package]]
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+[[package]]
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+ "instant",
+]
+
+[[package]]
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+ "cfg-if",
+ "libc",
+ "wasi",
+]
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+dependencies = [
+ "ahash",
+]
+
+[[package]]
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+dependencies = [
+ "hashbrown",
+]
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+[[package]]
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+checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "libc"
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+ "pkg-config",
+ "vcpkg",
+]
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+[[package]]
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+[[package]]
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+ "bitflags",
+ "fallible-iterator",
+ "fallible-streaming-iterator",
+ "hashlink",
+ "libsqlite3-sys",
+ "smallvec",
+]
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+[[package]]
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+ "rusqlite",
+ "tempfile",
+]
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+[[package]]
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+dependencies = [
+ "cfg-if",
+ "fastrand",
+ "libc",
+ "redox_syscall",
+ "remove_dir_all",
+ "winapi",
+]
+
+[[package]]
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+[[package]]
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+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..409bc0e
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "sqlite-online-backup"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+rusqlite = { version="0.28.0", features=["backup"]}
+tempfile = "3.3.0"
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..cdb62a6
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,36 @@
+use rusqlite::backup::{Backup, Progress};
+use rusqlite::Connection;
+use std::env;
+use std::fs::copy;
+use std::path::Path;
+use std::time::Duration;
+use tempfile::NamedTempFile;
+
+fn progress(progress: Progress) {
+    println!("{:?}", progress)
+}
+
+fn main() {
+    let args = env::args().nth(1).expect("Requires 1 argument");
+
+    let src_file = Path::new(Path::new(&args));
+    let tmpfile = NamedTempFile::new().unwrap();
+    let tmpfile_path = tmpfile.path();
+    println!("{}", src_file.metadata().unwrap().len() / 1000);
+    println!("{}", tmpfile_path.display());
+
+    let src_db = Connection::open(src_file).unwrap();
+
+    let mut dest_db = Connection::open(tmpfile_path).unwrap();
+    {
+        let backup = Backup::new(&src_db, &mut dest_db).unwrap();
+        backup
+            .run_to_completion(100, Duration::from_millis(100), Some(progress))
+            .unwrap();
+    }
+
+    src_db.close().unwrap();
+    dest_db.close().unwrap();
+
+    copy(tmpfile_path, Path::new("./backup.db")).unwrap();
+}