first pass fast export

4 files changed, 335 insertions, 1 deletions

diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index 5933716d..6d12659e 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -20,6 +20,14 @@ version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "arrayvec"
+version = "0.4.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "ascii"
 version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -158,6 +166,14 @@ dependencies = [
 ]
 
 [[package]]
+name = "cloudabi"
+version = "0.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "conduit-mime-types"
 version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -166,6 +182,36 @@ dependencies = [
 ]
 
 [[package]]
+name = "crossbeam-channel"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "crossbeam-epoch 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "crossbeam-epoch"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "arrayvec 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cfg-if 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "data-encoding"
 version = "2.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -305,6 +351,7 @@ version = "0.1.0"
 dependencies = [
  "chrono 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.31.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-channel 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "data-encoding 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "diesel 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "diesel_migrations 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -529,6 +576,15 @@ version = "0.2.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "lock_api"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "log"
 version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -566,6 +622,11 @@ dependencies = [
 ]
 
 [[package]]
+name = "memoffset"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "migrations_internals"
 version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -627,6 +688,11 @@ dependencies = [
 ]
 
 [[package]]
+name = "nodrop"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "num"
 version = "0.1.42"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -690,6 +756,35 @@ dependencies = [
 ]
 
 [[package]]
+name = "owning_ref"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "parking_lot"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lock_api 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "percent-encoding"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -811,6 +906,23 @@ dependencies = [
 ]
 
 [[package]]
+name = "rand"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "redox_syscall"
 version = "0.1.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -897,6 +1009,14 @@ version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "rustc_version"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "safemem"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -910,6 +1030,24 @@ dependencies = [
 ]
 
 [[package]]
+name = "scopeguard"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "semver"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "semver-parser"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "serde"
 version = "1.0.55"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -980,6 +1118,19 @@ dependencies = [
 ]
 
 [[package]]
+name = "smallvec"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "stable_deref_trait"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "strsim"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1288,6 +1439,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum aho-corasick 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)" = "d6531d44de723825aa81398a6415283229725a00fa30713812ab9323faa82fc4"
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 "checksum chrono 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1cce36c92cb605414e9b824f866f5babe0a0368e39ea07393b9b63cf3844c0e6"
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 "checksum scheduled-thread-pool 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1a2ff3fc5223829be817806c6441279c676e454cc7da608faf03b0ccc09d3889"
+"checksum scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "94258f53601af11e6a49f722422f6e3425c52b06245a5cf9bc09908b174f5e27"
+"checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
+"checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 "checksum serde 1.0.55 (registry+https://github.com/rust-lang/crates.io-index)" = "97f6a6c3caba0cf8f883b53331791036404ce3c1bd895961cf8bb2f8cecfd84b"
 "checksum serde_derive 1.0.55 (registry+https://github.com/rust-lang/crates.io-index)" = "f51b0ef935cf8a41a77bce553da1f8751a739b7ad82dd73669475a22e6ecedb0"
 "checksum serde_ignored 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "190e9765dcedb56be63b6e0993a006c7e3b071a016a304736e4a315dc01fb142"
@@ -1397,6 +1565,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum slog 2.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2f7bfce6405155042d42ec0e645efe43eddedd7be280063ce0623b120014e7f9"
 "checksum slog-async 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e544d16c6b230d84c866662fe55e31aacfca6ae71e6fc49ae9a311cb379bfc2f"
 "checksum slog-term 2.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5951a808c40f419922ee014c15b6ae1cd34d963538b57d8a4778b9ca3fff1e0b"
+"checksum smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "153ffa32fd170e9944f7e0838edf824a754ec4c1fc64746fcc9fe1f8fa602e5d"
+"checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"
 "checksum swagger 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "190ef0c6327759d0beb76d969b236fa3cc42469f9e107f626bbcc152727b4d12"
 "checksum syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d3b891b9015c88c576343b9b3e41c2c11a51c219ef067b264bd9c8aa9b441dad"
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index 6b2e1ffe..0e14c583 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -35,6 +35,9 @@ slog-term = "*"
 slog-async = "*"
 serde_json = "1.0"
 
+# Command-line tools
+crossbeam-channel = "0.2"
+
 # Unused (hyper 0.11 and https)
 #hyper-openssl = {version = "0.2", optional = true}
 #hyper-tls = {version = "0.1.2", optional = true}
diff --git a/rust/src/bin/fatcat-export.rs b/rust/src/bin/fatcat-export.rs
new file mode 100644
index 00000000..d7371c87
--- /dev/null
+++ b/rust/src/bin/fatcat-export.rs
@@ -0,0 +1,161 @@
+//! JSON Export Helper
+
+extern crate clap;
+extern crate diesel;
+extern crate dotenv;
+#[macro_use]
+extern crate error_chain;
+extern crate fatcat;
+extern crate fatcat_api_spec;
+#[macro_use]
+extern crate slog;
+extern crate slog_async;
+extern crate slog_term;
+extern crate uuid;
+extern crate crossbeam_channel;
+extern crate serde_json;
+
+use clap::{App, Arg};
+use slog::{Drain, Logger};
+use dotenv::dotenv;
+use std::env;
+
+use diesel::prelude::*;
+use diesel::r2d2::ConnectionManager;
+use fatcat_api_spec::models::*;
+use std::str::FromStr;
+use uuid::Uuid;
+use fatcat::ConnectionPool;
+use fatcat::api_helpers::*;
+use fatcat::api_entity_crud::*;
+use fatcat::errors::*;
+
+use std::thread;
+//use std::io::{Stdout,StdoutLock};
+use crossbeam_channel as channel;
+//use num_cpus; TODO:
+use std::io::prelude::*;
+use std::io::{BufReader, BufWriter};
+
+const CHANNEL_BUFFER_LEN: usize = 200;
+
+struct IdentRow {
+    ident_id: FatCatId,
+    rev_id: Option<Uuid>,
+    redirect_id: Option<FatCatId>,
+}
+
+/// Instantiate a new API server with a pooled database connection
+pub fn database_worker_pool() -> Result<ConnectionPool> {
+    dotenv().ok();
+    let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
+    let manager = ConnectionManager::<PgConnection>::new(database_url);
+    let pool = diesel::r2d2::Pool::builder()
+        .build(manager)
+        .expect("Failed to create database pool.");
+    Ok(pool)
+}
+
+fn loop_work(row_receiver: channel::Receiver<IdentRow>, output_sender: channel::Sender<String>, db_conn: &DbConn, expand: Option<ExpandFlags>) -> Result<()> {
+    for row in row_receiver {
+        // TODO: based on types
+        let mut entity = ReleaseEntity::db_get_rev(db_conn, row.rev_id.expect("valid, non-deleted row"))?;
+        entity.state = Some("active".to_string()); // TODO
+        entity.ident = Some(row.ident_id.to_string());
+        if let Some(expand) = expand {
+            entity.db_expand(db_conn, expand)?;
+        }
+        output_sender.send(serde_json::to_string(&entity)?);
+    }
+    Ok(())
+}
+
+fn loop_printer(output_receiver: channel::Receiver<String>, done_sender: channel::Sender<()>) -> Result<()> {
+    let output = std::io::stdout();
+    // XXX should log...
+    // let mut buf_output = BufWriter::new(output.lock());
+    let mut buf_output = BufWriter::new(output);
+    for line in output_receiver {
+        buf_output.write_all(&line.into_bytes())?;
+        buf_output.write(b"\n")?;
+        buf_output.flush()?;
+    }
+    drop(done_sender);
+    Ok(())
+}
+
+fn parse_line(s: String) -> Result<IdentRow> {
+    let fields: Vec<String> = s.split("\t").map(|v| v.to_string()).collect();
+    if fields.len() != 3 {
+        bail!("Invalid input line");
+    }
+    Ok(IdentRow {
+        ident_id: FatCatId::from_uuid(&Uuid::from_str(&fields[0])?),
+        rev_id: Some(Uuid::from_str(&fields[1])?),
+        redirect_id: None,
+    })
+}
+
+#[test]
+fn test_parse_line() {
+    assert!(false)
+}
+
+// Use num_cpus/2, or CLI arg for worker count
+//
+// 1. open buffered reader, buffered writer, and database pool. create channels
+// 2. spawn workers:
+//      - get a database connection from database pool
+//      - iterate over row channel, pushing Strings to output channel
+//      - exit when end of rows
+// 3. spawn output printer
+// 4. read rows, pushing to row channel
+//      => every N lines, log to stderr
+// 5. wait for all channels to finish, and quit
+pub fn run() -> Result<()> {
+
+    let db_pool = database_worker_pool()?;
+    let buf_input = BufReader::new(std::io::stdin());
+    let worker_count = 4;
+    let (row_sender, row_receiver) = channel::bounded(CHANNEL_BUFFER_LEN);
+    let (output_sender, output_receiver) = channel::bounded(CHANNEL_BUFFER_LEN);
+    let (done_sender, done_receiver) = channel::bounded(0);
+
+    // Start row worker threads
+    for _ in 0..worker_count {
+        let db_conn = db_pool.get().expect("database pool");
+        let row_receiver = row_receiver.clone();
+        let output_sender = output_sender.clone();
+        thread::spawn(move || loop_work(row_receiver, output_sender, &db_conn, None));
+    }
+    drop(output_sender);
+    // Start printer thread
+    thread::spawn(move || loop_printer(output_receiver, done_sender));
+
+    for line in buf_input.lines() {
+        let line = line?;
+        let row = parse_line(line)?;
+        row_sender.send(row);
+    }
+    drop(row_sender);
+    done_receiver.recv();
+    Ok(())
+}
+
+fn main() {
+    /*
+    let matches = App::new("server")
+        .arg(
+            Arg::with_name("https")
+                .long("https")
+                .help("Whether to use HTTPS or not"),
+        )
+        .get_matches();
+
+    let decorator = slog_term::TermDecorator::new().build();
+    let drain = slog_term::CompactFormat::new(decorator).build().fuse();
+    let drain = slog_async::Async::new(drain).build().fuse();
+    let logger = Logger::root(drain, o!());
+    */
+    run().expect("success")
+}
diff --git a/rust/src/lib.rs b/rust/src/lib.rs
index 381c67ea..d3ef4a9c 100644
--- a/rust/src/lib.rs
+++ b/rust/src/lib.rs
@@ -29,7 +29,7 @@ pub mod api_wrappers;
 pub mod database_models;
 pub mod database_schema;
 
-mod errors {
+pub mod errors {
     // Create the Error, ErrorKind, ResultExt, and Result types
     error_chain! {
         foreign_links { Fmt(::std::fmt::Error);