Full Code of sevagh/pq for AI

Repository: sevagh/pq
Branch: master
Commit: 94f09f1f693d
Files: 49
Total size: 67.8 KB

Directory structure:
gitextract_tt0fh83e/

├── .gitignore
├── Cargo.toml
├── LICENSE
├── Makefile
├── README.md
├── erased-serde-json/
│   ├── .gitignore
│   ├── Cargo.toml
│   ├── LICENSE-APACHE
│   ├── LICENSE-MIT
│   ├── README.md
│   └── src/
│       ├── lib.rs
│       └── ser.rs
├── src/
│   ├── commands.rs
│   ├── decode.rs
│   ├── discovery.rs
│   ├── formatter.rs
│   └── main.rs
├── stream-delimit/
│   ├── Cargo.toml
│   ├── LICENSE
│   ├── README.md
│   └── src/
│       ├── byte_consumer.rs
│       ├── converter.rs
│       ├── error.rs
│       ├── kafka_consumer.rs
│       ├── lib.rs
│       ├── stream.rs
│       └── varint.rs
├── tests/
│   ├── README.md
│   ├── fdsets/
│   │   ├── cat.fdset
│   │   ├── dog.fdset
│   │   └── person.fdset
│   ├── fdsets-invalid/
│   │   └── .gitignore
│   ├── protos/
│   │   └── dog.proto
│   ├── samples/
│   │   ├── bad
│   │   ├── cat
│   │   ├── dog
│   │   ├── dog_i32be_stream
│   │   ├── dog_stream
│   │   ├── person
│   │   └── person_stream
│   └── test_pqrs_bin.rs
└── utils/
    ├── .gitignore
    ├── GNUmakefile
    ├── README.txt
    ├── cat.proto
    ├── dog.proto
    ├── person.proto
    ├── proto_encoder.py
    └── requirements.txt

================================================
FILE CONTENTS
================================================

================================================
FILE: .gitignore
================================================
target
rust
*.tar.gz
*~
*.bk
pq


================================================
FILE: Cargo.toml
================================================
[package]
name = "pq"
version = "1.4.4"
authors = ["Sevag Hanssian <sevag.hanssian@gmail.com>"]
description = "jq for protobuf"
repository = "https://github.com/sevagh/pq"
documentation = "https://github.com/sevagh/pq"
readme = "README.md"
license = "MIT"
keywords = ["protobuf", "serde"]
exclude = ["pq-bin.tar.gz", "pq", "target/**"]
edition = "2021"

[dependencies]
openssl = { version = "0.10", features = ["vendored"] }
serde = "1.0"
erased_serde_json = { path = "erased-serde-json", version = "0.1.3" }
serde_json = "1.0"
serde-protobuf = "0.8"
protobuf = "2.3"
stream_delimit = { path = "stream-delimit", version = "0.5.7" }
clap = "2"
libc = "0.2"
dirs = "2.0"
serde-transcode = ">= 1.1, <2"
default-env = "0.1.1"

[dev-dependencies]
assert_cli = "0.6"

[features]
default = ["stream_delimit/with_kafka"]

[workspace]
members = ["stream-delimit", "erased-serde-json"]
default-members = [".", "stream-delimit", "erased-serde-json"]

[profile.release]
debug = true
lto = true
panic = "abort"


================================================
FILE: LICENSE
================================================
MIT License

Copyright (c) 2017 Sevag Hanssian

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


================================================
FILE: Makefile
================================================
WORKSPACES="./" "./stream-delimit/"
DOCKER_BIN ?= docker
DOCKER_IMAGE=docker.io/clux/muslrust
DOCKER_ARGS=run -v $(PWD):/volume:Z -w /volume -t $(DOCKER_IMAGE)
CARGO_TOKEN:=$(shell grep 'token' ~/.cargo/credentials.toml | cut -d'"' -f2)

all: debug

docker:
	$(DOCKER_BIN) pull $(DOCKER_IMAGE)

debug: docker
	$(DOCKER_BIN) $(DOCKER_ARGS) sh -c "cargo build --verbose"

release: docker
	$(DOCKER_BIN) $(DOCKER_ARGS) sh -c "cargo build --verbose --release"

test: docker
	$(DOCKER_BIN) $(DOCKER_ARGS) sh -c "cargo test --verbose"

publish: docker
	$(DOCKER_BIN) $(DOCKER_ARGS) sh -c "cargo login $(CARGO_TOKEN) && cd stream-delimit && cargo publish ; cd ../ && cd erased-serde-json && cargo publish ; cd ../ && cargo publish"

fmt:
	-cargo fmt --all
	-black utils/*.py

clippy:
	-cargo clippy --all

package: release
	tar -C target/x86_64-unknown-linux-musl/release -czvf pq-bin.tar.gz pq

.PHONY: all debug release package


================================================
FILE: README.md
================================================
# pq [![license](https://img.shields.io/github/license/sevagh/pq.svg)](https://github.com/sevagh/pq/blob/master/LICENSE) [![Crates.io](https://img.shields.io/crates/v/pq.svg)](https://crates.io/crates/pq)

### protobuf to json deserializer, written in Rust

`pq` is a tool which deserializes protobuf messages given a set of pre-compiled `.fdset` files. It can understand varint/leb128-delimited/i32be streams, and it can connect to Kafka.

`pq` will pretty-print when outputting to a tty, but you should pipe it to `jq` for more fully-featured json handling.

### Download

pq is on [crates.io](https://crates.io/crates/pq): `cargo install pq`. You can also download a static binary from the [releases page](https://github.com/sevagh/pq/releases).

### Usage

**new** You can now pass in a proto file and have pq compile it on the fly using `protoc`:

```
$ pq --protofile ./tests/protos/dog.proto  --msgtype com.example.dog.Dog <./tests/samples/dog
{
  "breed": "gsd",
  "age": 3,
  "temperament": "excited"
}
```

Use PROTOC and PROTOC_INCLUDE to control the executed protoc binary and configure the `-I=/proto/path` argument (design copied from [prost](https://github.com/danburkert/prost/blob/master/prost-build/src/lib.rs)).

To set up, put your `*.fdset` files in `~/.pq`, `/etc/pq`, or a different directory specified with the `FDSET_PATH` env var:

```
$ protoc -o dog.fdset dog.proto
$ protoc -o person.fdset person.proto
$ cp *.fdset ~/.pq/
```

You can specify additional fdset directories or files via options:

```
$ pq --msgtype com.example.dog.Dog --fdsetdir ./tests/fdsets <./tests/samples/dog
$ pq --msgtype com.example.dog.Dog --fdsetfile ./tests/fdsets/dog.fdset <./tests/samples/dog
```

Pipe a single compiled protobuf message:

```
$ pq --msgtype com.example.dog.Dog <./tests/samples/dog
{
  "age": 4,
  "breed": "poodle",
  "temperament": "excited"
}
```

Pipe a `varint` or `leb128` delimited stream:

```
$ pq --msgtype com.example.dog.Dog --stream varint <./tests/samples/dog_stream
{
  "age": 10,
  "breed": "gsd",
  "temperament": "aggressive"
}
```

Consume from a Kafka stream:

```
$ pq kafka my_topic --brokers 192.168.0.1:9092 --beginning --count 1 --msgtype com.example.dog.Dog
{
  "age": 10,
  "breed": "gsd",
  "temperament": "aggressive"
}
```

Convert a Kafka stream to varint-delimited:

```
$ pq kafka my_topic --brokers=192.168.0.1:9092 --count 1 --convert varint |\
> pq --msgtype com.example.dog.Dog --stream varint
{
  "age": 10,
  "breed": "gsd",
  "temperament": "aggressive"
}
```

Pipe `kafkacat` output to it:
```
$ kafkacat -b 192.168.0.1:9092 -C -u -q -f "%R%s" -t my_topic |\
> pq --msgtype=com.example.dog.Dog --stream i32be
{
  "age": 10,
  "breed": "gsd",
  "temperament": "aggressive"
}
```

### Compile without kafka

To compile `pq` without kafka support, run:

```
$ cargo build --no-default-features
```

### Compile for Windows

1. Install [Visual Studio Installer](https://visualstudio.microsoft.com/downloads/) Community edition
2. Run the installer and install `Visual Studio Build Tools 2019`. You need the `C++ Build Tools` workload. Note that you can't just install the minimal package, you also need `MSVC C++ x64/86 Build Tools` and `Windows 10 SDK`.
3. Open `x64 Native Tools Command Prompt` from the start menu.
4. Download and run [`rustup-init.exe`](https://win.rustup.rs/x86_64)
5. Close and reopen your terminal (so `cargo` will be in your path)
6. Run `cargo install --no-default-features pq`

Note that this will disable the Kafka feature, which is not currently supported on Windows.


================================================
FILE: erased-serde-json/.gitignore
================================================
target/
**/*.rs.bk
*.sw[po]
Cargo.lock


================================================
FILE: erased-serde-json/Cargo.toml
================================================
[package]
name = "erased_serde_json"
version = "0.1.3"
authors = ["Sevag Hanssian <sevag.hanssian@gmail.com>"]
license = "MIT/Apache-2.0"
description = "Type-erased Formatter trait for serde_json::ser::Formatter"
repository = "https://github.com/sevagh/erased-serde-json"
documentation = "https://github.com/sevagh/erased-serde-json"
keywords = ["json", "serde", "serialization"]
categories = ["encoding"]
readme = "README.md"
include = ["Cargo.toml", "src/**/*.rs", "README.md", "LICENSE-APACHE", "LICENSE-MIT"]
edition = "2018"

[dependencies]
serde = "1.0"
serde_json = "1.0.2"


================================================
FILE: erased-serde-json/LICENSE-APACHE
================================================
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================================================
FILE: erased-serde-json/LICENSE-MIT
================================================
Copyright (c) 2014 The Rust Project Developers

Permission is hereby granted, free of charge, to any
person obtaining a copy of this software and associated
documentation files (the "Software"), to deal in the
Software without restriction, including without
limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software
is furnished to do so, subject to the following
conditions:

The above copyright notice and this permission notice
shall be included in all copies or substantial portions
of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.


================================================
FILE: erased-serde-json/README.md
================================================
Inspired by https://github.com/dtolnay/erased-serde

# erased-serde-json [![Crates.io](https://img.shields.io/crates/v/erased_serde_json.svg)](https://crates.io/crates/erased_serde_json) [![Crates.io](https://img.shields.io/crates/d/erased_serde_json.svg)](https://github.com/sevagh/pq/tree/master/erased-serde-json)

A helper crate for pq.


================================================
FILE: erased-serde-json/src/lib.rs
================================================
extern crate serde;
extern crate serde_json;

pub use self::ser::Formatter;

pub mod ser;


================================================
FILE: erased-serde-json/src/ser.rs
================================================
use std::io;

use serde_json::ser::CharEscape;

pub trait Formatter {
    fn erased_write_null(&mut self, writer: &mut dyn io::Write) -> Result<(), io::Error>;
    fn erased_write_bool(
        &mut self,
        writer: &mut dyn io::Write,
        value: bool,
    ) -> Result<(), io::Error>;
    fn erased_write_i8(&mut self, writer: &mut dyn io::Write, value: i8) -> Result<(), io::Error>;
    fn erased_write_i16(&mut self, writer: &mut dyn io::Write, value: i16)
        -> Result<(), io::Error>;
    fn erased_write_i32(&mut self, writer: &mut dyn io::Write, value: i32)
        -> Result<(), io::Error>;
    fn erased_write_i64(&mut self, writer: &mut dyn io::Write, value: i64)
        -> Result<(), io::Error>;
    fn erased_write_u8(&mut self, writer: &mut dyn io::Write, value: u8) -> Result<(), io::Error>;
    fn erased_write_u16(&mut self, writer: &mut dyn io::Write, value: u16)
        -> Result<(), io::Error>;
    fn erased_write_u32(&mut self, writer: &mut dyn io::Write, value: u32)
        -> Result<(), io::Error>;
    fn erased_write_u64(&mut self, writer: &mut dyn io::Write, value: u64)
        -> Result<(), io::Error>;
    fn erased_write_f32(&mut self, writer: &mut dyn io::Write, value: f32)
        -> Result<(), io::Error>;
    fn erased_write_f64(&mut self, writer: &mut dyn io::Write, value: f64)
        -> Result<(), io::Error>;
    fn erased_begin_string(&mut self, writer: &mut dyn io::Write) -> Result<(), io::Error>;
    fn erased_end_string(&mut self, writer: &mut dyn io::Write) -> Result<(), io::Error>;
    fn erased_write_string_fragment(
        &mut self,
        writer: &mut dyn io::Write,
        fragment: &str,
    ) -> Result<(), io::Error>;
    fn erased_write_char_escape(
        &mut self,
        writer: &mut dyn io::Write,
        char_escape: CharEscape,
    ) -> Result<(), io::Error>;
    fn erased_begin_array(&mut self, writer: &mut dyn io::Write) -> Result<(), io::Error>;
    fn erased_end_array(&mut self, writer: &mut dyn io::Write) -> Result<(), io::Error>;
    fn erased_begin_array_value(
        &mut self,
        writer: &mut dyn io::Write,
        first: bool,
    ) -> Result<(), io::Error>;
    fn erased_end_array_value(&mut self, writer: &mut dyn io::Write) -> Result<(), io::Error>;
    fn erased_begin_object(&mut self, writer: &mut dyn io::Write) -> Result<(), io::Error>;
    fn erased_end_object(&mut self, writer: &mut dyn io::Write) -> Result<(), io::Error>;
    fn erased_begin_object_key(
        &mut self,
        writer: &mut dyn io::Write,
        first: bool,
    ) -> Result<(), io::Error>;
    fn erased_end_object_key(&mut self, writer: &mut dyn io::Write) -> Result<(), io::Error>;
    fn erased_begin_object_value(&mut self, writer: &mut dyn io::Write) -> Result<(), io::Error>;
    fn erased_end_object_value(&mut self, writer: &mut dyn io::Write) -> Result<(), io::Error>;
}

impl<T> Formatter for T
where
    T: serde_json::ser::Formatter,
{
    fn erased_write_null(&mut self, w: &mut dyn io::Write) -> Result<(), io::Error> {
        self.write_null(w)
    }
    fn erased_write_bool(&mut self, w: &mut dyn io::Write, v: bool) -> Result<(), io::Error> {
        self.write_bool(w, v)
    }
    fn erased_write_i8(&mut self, w: &mut dyn io::Write, v: i8) -> Result<(), io::Error> {
        self.write_i8(w, v)
    }
    fn erased_write_i16(&mut self, w: &mut dyn io::Write, v: i16) -> Result<(), io::Error> {
        self.write_i16(w, v)
    }
    fn erased_write_i32(&mut self, w: &mut dyn io::Write, v: i32) -> Result<(), io::Error> {
        self.write_i32(w, v)
    }
    fn erased_write_i64(&mut self, w: &mut dyn io::Write, v: i64) -> Result<(), io::Error> {
        self.write_i64(w, v)
    }
    fn erased_write_u8(&mut self, w: &mut dyn io::Write, v: u8) -> Result<(), io::Error> {
        self.write_u8(w, v)
    }
    fn erased_write_u16(&mut self, w: &mut dyn io::Write, v: u16) -> Result<(), io::Error> {
        self.write_u16(w, v)
    }
    fn erased_write_u32(&mut self, w: &mut dyn io::Write, v: u32) -> Result<(), io::Error> {
        self.write_u32(w, v)
    }
    fn erased_write_u64(&mut self, w: &mut dyn io::Write, v: u64) -> Result<(), io::Error> {
        self.write_u64(w, v)
    }
    fn erased_write_f32(&mut self, w: &mut dyn io::Write, v: f32) -> Result<(), io::Error> {
        self.write_f32(w, v)
    }
    fn erased_write_f64(&mut self, w: &mut dyn io::Write, v: f64) -> Result<(), io::Error> {
        self.write_f64(w, v)
    }
    fn erased_begin_string(&mut self, w: &mut dyn io::Write) -> Result<(), io::Error> {
        self.begin_string(w)
    }
    fn erased_end_string(&mut self, w: &mut dyn io::Write) -> Result<(), io::Error> {
        self.end_string(w)
    }
    fn erased_write_string_fragment(
        &mut self,
        w: &mut dyn io::Write,
        fragment: &str,
    ) -> Result<(), io::Error> {
        self.write_string_fragment(w, fragment)
    }
    fn erased_write_char_escape(
        &mut self,
        w: &mut dyn io::Write,
        char_escape: CharEscape,
    ) -> Result<(), io::Error> {
        self.write_char_escape(w, char_escape)
    }
    fn erased_begin_array(&mut self, w: &mut dyn io::Write) -> Result<(), io::Error> {
        self.begin_array(w)
    }
    fn erased_end_array(&mut self, w: &mut dyn io::Write) -> Result<(), io::Error> {
        self.end_array(w)
    }
    fn erased_begin_array_value(
        &mut self,
        w: &mut dyn io::Write,
        first: bool,
    ) -> Result<(), io::Error> {
        self.begin_array_value(w, first)
    }
    fn erased_end_array_value(&mut self, w: &mut dyn io::Write) -> Result<(), io::Error> {
        self.end_array_value(w)
    }
    fn erased_begin_object(&mut self, w: &mut dyn io::Write) -> Result<(), io::Error> {
        self.begin_object(w)
    }
    fn erased_end_object(&mut self, w: &mut dyn io::Write) -> Result<(), io::Error> {
        self.end_object(w)
    }
    fn erased_begin_object_key(
        &mut self,
        w: &mut dyn io::Write,
        first: bool,
    ) -> Result<(), io::Error> {
        self.begin_object_key(w, first)
    }
    fn erased_end_object_key(&mut self, w: &mut dyn io::Write) -> Result<(), io::Error> {
        self.end_object_key(w)
    }
    fn erased_begin_object_value(&mut self, w: &mut dyn io::Write) -> Result<(), io::Error> {
        self.begin_object_value(w)
    }
    fn erased_end_object_value(&mut self, w: &mut dyn io::Write) -> Result<(), io::Error> {
        self.end_object_value(w)
    }
}

macro_rules! impl_formatter_for_trait_object {
    ($ty:ty) => {
        impl<'a> serde_json::ser::Formatter for $ty {
            fn write_null<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
            ) -> Result<(), io::Error> {
                self.erased_write_null(&mut w)
            }
            fn write_bool<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                v: bool,
            ) -> Result<(), io::Error> {
                self.erased_write_bool(&mut w, v)
            }
            fn write_i8<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                v: i8,
            ) -> Result<(), io::Error> {
                self.erased_write_i8(&mut w, v)
            }
            fn write_i16<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                v: i16,
            ) -> Result<(), io::Error> {
                self.erased_write_i16(&mut w, v)
            }
            fn write_i32<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                v: i32,
            ) -> Result<(), io::Error> {
                self.erased_write_i32(&mut w, v)
            }
            fn write_i64<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                v: i64,
            ) -> Result<(), io::Error> {
                self.erased_write_i64(&mut w, v)
            }
            fn write_u8<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                v: u8,
            ) -> Result<(), io::Error> {
                self.erased_write_u8(&mut w, v)
            }
            fn write_u16<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                v: u16,
            ) -> Result<(), io::Error> {
                self.erased_write_u16(&mut w, v)
            }
            fn write_u32<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                v: u32,
            ) -> Result<(), io::Error> {
                self.erased_write_u32(&mut w, v)
            }
            fn write_u64<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                v: u64,
            ) -> Result<(), io::Error> {
                self.erased_write_u64(&mut w, v)
            }
            fn write_f32<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                v: f32,
            ) -> Result<(), io::Error> {
                self.erased_write_f32(&mut w, v)
            }
            fn write_f64<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                v: f64,
            ) -> Result<(), io::Error> {
                self.erased_write_f64(&mut w, v)
            }
            fn begin_string<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
            ) -> Result<(), io::Error> {
                self.erased_begin_string(&mut w)
            }
            fn end_string<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
            ) -> Result<(), io::Error> {
                self.erased_end_string(&mut w)
            }
            fn write_string_fragment<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                fragment: &str,
            ) -> Result<(), io::Error> {
                self.erased_write_string_fragment(&mut w, fragment)
            }
            fn write_char_escape<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                char_escape: CharEscape,
            ) -> Result<(), io::Error> {
                self.erased_write_char_escape(&mut w, char_escape)
            }
            fn begin_array<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
            ) -> Result<(), io::Error> {
                self.erased_begin_array(&mut w)
            }
            fn end_array<W: ?Sized + io::Write>(&mut self, mut w: &mut W) -> Result<(), io::Error> {
                self.erased_end_array(&mut w)
            }
            fn begin_array_value<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                first: bool,
            ) -> Result<(), io::Error> {
                self.erased_begin_array_value(&mut w, first)
            }
            fn end_array_value<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
            ) -> Result<(), io::Error> {
                self.erased_end_array_value(&mut w)
            }
            fn begin_object<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
            ) -> Result<(), io::Error> {
                self.erased_begin_object(&mut w)
            }
            fn end_object<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
            ) -> Result<(), io::Error> {
                self.erased_end_object(&mut w)
            }
            fn begin_object_key<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
                first: bool,
            ) -> Result<(), io::Error> {
                self.erased_begin_object_key(&mut w, first)
            }
            fn end_object_key<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
            ) -> Result<(), io::Error> {
                self.erased_end_object_key(&mut w)
            }
            fn begin_object_value<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
            ) -> Result<(), io::Error> {
                self.erased_begin_object_value(&mut w)
            }
            fn end_object_value<W: ?Sized + io::Write>(
                &mut self,
                mut w: &mut W,
            ) -> Result<(), io::Error> {
                self.erased_end_object_value(&mut w)
            }
        }
    };
}

impl_formatter_for_trait_object!(dyn Formatter);
impl_formatter_for_trait_object!(&'a mut dyn Formatter);
impl_formatter_for_trait_object!(&'a mut (dyn Formatter + Send));
impl_formatter_for_trait_object!(&'a mut (dyn Formatter + Sync));
impl_formatter_for_trait_object!(&'a mut (dyn Formatter + Send + Sync));


================================================
FILE: src/commands.rs
================================================
use clap::ArgMatches;
use protobuf::descriptor::FileDescriptorSet;
use serde_json::ser::Serializer;

use std::io::{self, Write};
use std::path::PathBuf;

use crate::decode::PqDecoder;
use crate::discovery::{compile_descriptors_from_proto, get_loaded_descriptors};
use crate::formatter::CustomFormatter;

use stream_delimit::byte_consumer::ByteConsumer;
use stream_delimit::converter::Converter;
use stream_delimit::stream::*;

pub struct CommandRunner {
    descriptors: Vec<FileDescriptorSet>,
    prettyjson: bool,
}

#[cfg(feature = "default")]
use stream_delimit::kafka_consumer::KafkaConsumer;

impl CommandRunner {
    pub fn new(
        additional_fdset_dirs: Vec<PathBuf>,
        mut additional_fdset_files: Vec<PathBuf>,
        additional_proto_file: Option<&str>,
        prettyjson: bool,
    ) -> Self {
        if let Some(x) = additional_proto_file {
            let compiled_descriptor_path = compile_descriptors_from_proto(x);
            additional_fdset_files.push(compiled_descriptor_path);
        }

        let descriptors = get_loaded_descriptors(additional_fdset_dirs, additional_fdset_files);

        CommandRunner {
            descriptors,
            prettyjson,
        }
    }

    #[cfg(feature = "default")]
    pub fn run_kafka(self, matches: &ArgMatches<'_>) {
        if let (Some(brokers), Some(topic)) =
            (matches.value_of("BROKERS"), matches.value_of("TOPIC"))
        {
            let consumer = match KafkaConsumer::new(brokers, topic, matches.is_present("FROMBEG")) {
                Ok(x) => x,
                Err(e) => panic!("Couldn't initialize kafka consumer: {}", e),
            };
            decode_or_convert(consumer, matches, self.descriptors, self.prettyjson).unwrap();
        } else {
            panic!("Kafka needs broker[s] and topic");
        }
    }

    #[cfg(not(feature = "default"))]
    pub fn run_kafka(self, _: &ArgMatches) {
        unimplemented!("This version of pq has been compiled without kafka support");
    }

    pub fn run_byte(self, matches: &ArgMatches<'_>) {
        if unsafe { libc::isatty(0) != 0 } {
            panic!("pq expects input to be piped from stdin");
        }
        let stream_type = str_to_streamtype(matches.value_of("STREAM").unwrap_or("single"))
            .expect("Couldn't convert str to streamtype");
        decode_or_convert(
            ByteConsumer::new(io::stdin(), stream_type),
            matches,
            self.descriptors,
            self.prettyjson,
        )
        .unwrap()
    }
}

fn decode_or_convert<T: Iterator<Item = Vec<u8>> + FramedRead>(
    mut consumer: T,
    matches: &ArgMatches<'_>,
    descriptors: Vec<FileDescriptorSet>,
    prettyjson: bool,
) -> io::Result<()> {
    let count = value_t!(matches, "COUNT", i32).unwrap_or(-1);

    let stdout = io::stdout();

    let use_pretty_json = if prettyjson {
        prettyjson
    } else {
        unsafe { libc::isatty(1) != 0 }
    };
    if let Some(convert_type) = matches.value_of("CONVERT") {
        let converter = Converter::new(
            &mut consumer,
            str_to_streamtype(convert_type).expect("Couldn't convert str to streamtype"),
        );
        let stdout_ = &mut stdout.lock();
        for (ctr, item) in converter.enumerate() {
            if count >= 0 && ctr >= count as usize {
                break;
            }
            stdout_.write_all(&item).expect("Couldn't write to stdout");
        }
        Ok(())
    } else {
        let msgtype = format!(
            ".{}",
            matches
                .value_of("MSGTYPE")
                .expect("Must supply --msgtype or --convert")
        );

        let decoder = PqDecoder::new(descriptors, &msgtype);
        let mut formatter = CustomFormatter::new(use_pretty_json);
        let stdout_ = stdout.lock();
        let mut serializer = Serializer::with_formatter(stdout_, &mut formatter);
        let mut buffer = Vec::new();
        let mut ctr = 0;
        while let Some(item) = consumer.read_next_frame(&mut buffer)? {
            if count >= 0 && ctr >= count {
                break;
            }
            ctr += 1;
            decoder.transcode_message(item, &mut serializer);
        }
        Ok(())
    }
}


================================================
FILE: src/decode.rs
================================================
use protobuf::descriptor::FileDescriptorSet;
use protobuf::CodedInputStream;
use serde::Serializer;

use serde_protobuf::de::Deserializer;
use serde_protobuf::descriptor::Descriptors;

pub struct PqDecoder<'a> {
    pub descriptors: Descriptors,
    pub message_type: &'a str,
}

impl<'a> PqDecoder<'a> {
    pub fn new(loaded_descs: Vec<FileDescriptorSet>, message_type: &str) -> PqDecoder<'_> {
        let mut descriptors = Descriptors::new();
        for fdset in loaded_descs {
            descriptors.add_file_set_proto(&fdset);
        }
        descriptors.resolve_refs();
        PqDecoder {
            descriptors,
            message_type,
        }
    }

    pub fn transcode_message<S: Serializer>(&self, data: &[u8], out: S) {
        let stream = CodedInputStream::from_bytes(data);
        let mut deserializer =
            Deserializer::for_named_message(&self.descriptors, self.message_type, stream)
                .expect("could not init deserializer");

        serde_transcode::transcode(&mut deserializer, out).unwrap();
    }
}


================================================
FILE: src/discovery.rs
================================================
use protobuf::descriptor::FileDescriptorSet;
use protobuf::parse_from_reader;
use std::{
    env,
    fs::{read_dir, File},
    path::{Path, PathBuf},
    process::Command,
};

pub fn get_loaded_descriptors(
    additional_fdset_dirs: Vec<PathBuf>,
    mut additional_fdset_files: Vec<PathBuf>,
) -> Vec<FileDescriptorSet> {
    let (mut fdsets, mut tested_things) = discover_fdsets(additional_fdset_dirs);
    fdsets.append(&mut additional_fdset_files);
    tested_things.append(
        &mut additional_fdset_files
            .iter()
            .map(|x| format!("File: {:?}", x))
            .collect::<Vec<_>>(),
    );

    let mut descriptors: Vec<FileDescriptorSet> = Vec::new();

    for fdset_path in fdsets {
        let mut fdset_file = match File::open(fdset_path.as_path()) {
            Ok(x) => x,
            Err(e) => panic!("Couldn't open fdset file: {}", e),
        };
        match parse_from_reader(&mut fdset_file) {
            Err(_) => continue,
            Ok(x) => descriptors.push(x),
        }
    }

    if descriptors.is_empty() {
        panic!("No valid fdset files found. Checked: {:#?}", tested_things);
    }
    descriptors
}

fn discover_fdsets(additional_fdset_dirs: Vec<PathBuf>) -> (Vec<PathBuf>, Vec<String>) {
    let mut tested_things = Vec::new();
    let mut fdset_files = Vec::new();

    if let Ok(x) = env::var("FDSET_PATH") {
        tested_things.push(format!("Directory: {:?}", x));
        let p = PathBuf::from(x);
        fdset_files.append(&mut get_fdset_files_from_path(&p));
    }

    if let Some(mut x) = dirs::home_dir() {
        x.push(".pq");
        tested_things.push(format!("Directory: {:?}", x));
        fdset_files.append(&mut get_fdset_files_from_path(&x));
    }

    for x in additional_fdset_dirs {
        tested_things.push(format!("Directory: {:?}", x));
        fdset_files.append(&mut get_fdset_files_from_path(&x));
    }

    let x = PathBuf::from("/etc/pq");
    tested_things.push(format!("Directory: {:?}", x));
    fdset_files.append(&mut get_fdset_files_from_path(&x));

    (fdset_files, tested_things)
}

pub fn compile_descriptors_from_proto(proto_file: &str) -> PathBuf {
    let fdset_path = env::temp_dir().join("tmp-pq.fdset");

    let mut cmd = Command::new(protoc());
    cmd.arg("--include_imports")
        .arg("--include_source_info")
        .arg("-o")
        .arg(&fdset_path)
        .arg(proto_file);

    cmd.arg("-I").arg(protoc_include());

    let output = cmd.output().expect("failed to execute protoc");
    if !output.status.success() {
        panic!("protoc failed: {}", String::from_utf8_lossy(&output.stderr));
    }

    fdset_path
}

fn get_fdset_files_from_path(path: &Path) -> Vec<PathBuf> {
    let mut ret = vec![];
    if let Ok(paths) = read_dir(path) {
        for p in paths {
            let path = p.expect("error iterating through paths").path();
            if !path.is_dir() {
                ret.push(path);
            }
        }
    }
    ret
}

fn protoc() -> PathBuf {
    match env::var_os("PROTOC") {
        Some(protoc) => PathBuf::from(protoc),
        None => PathBuf::from(default_env!("PROTOC", "protoc")),
    }
}

fn protoc_include() -> PathBuf {
    match env::var_os("PROTOC_INCLUDE") {
        Some(include) => PathBuf::from(include),
        None => PathBuf::from(default_env!("PROTOC_INCLUDE", "")),
    }
}


================================================
FILE: src/formatter.rs
================================================
use erased_serde_json::Formatter as ErasedFormatter;
use serde_json::ser::{CompactFormatter, Formatter, PrettyFormatter};
use std::boxed::Box;
use std::io::{self, Write};

pub struct CustomFormatter {
    formatter: Box<dyn ErasedFormatter>,
    depth: usize,
}

impl CustomFormatter {
    pub fn new(use_pretty_json: bool) -> Self {
        let f: Box<dyn ErasedFormatter> = if use_pretty_json {
            Box::<PrettyFormatter<'_>>::default()
        } else {
            Box::new(CompactFormatter)
        };
        CustomFormatter {
            formatter: f,
            depth: 0,
        }
    }
}

impl<'a> Formatter for &'a mut CustomFormatter {
    fn begin_array<W: ?Sized + Write>(&mut self, w: &mut W) -> io::Result<()> {
        self.formatter.begin_array(w)
    }
    fn end_array<W: ?Sized + Write>(&mut self, w: &mut W) -> io::Result<()> {
        self.formatter.end_array(w)
    }
    fn begin_array_value<W: ?Sized + Write>(&mut self, w: &mut W, first: bool) -> io::Result<()> {
        self.formatter.begin_array_value(w, first)
    }
    fn end_array_value<W: ?Sized + Write>(&mut self, w: &mut W) -> io::Result<()> {
        self.formatter.end_array_value(w)
    }
    fn begin_object<W: ?Sized + Write>(&mut self, w: &mut W) -> io::Result<()> {
        self.depth += 1;
        self.formatter.begin_object(w)
    }
    fn end_object<W: ?Sized + Write>(&mut self, w: &mut W) -> io::Result<()> {
        self.formatter.end_object(w).and_then(|()| {
            self.depth -= 1;
            if self.depth == 0 {
                w.write_all(b"\n")
            } else {
                Ok(())
            }
        })
    }
    fn begin_object_key<W: ?Sized + Write>(&mut self, w: &mut W, first: bool) -> io::Result<()> {
        self.formatter.begin_object_key(w, first)
    }
    fn begin_object_value<W: ?Sized + Write>(&mut self, w: &mut W) -> io::Result<()> {
        self.formatter.begin_object_value(w)
    }
    fn end_object_value<W: ?Sized + Write>(&mut self, w: &mut W) -> io::Result<()> {
        self.formatter.end_object_value(w)
    }
}


================================================
FILE: src/main.rs
================================================
#![crate_type = "bin"]

#[macro_use]
extern crate clap;

#[macro_use]
extern crate default_env;

mod commands;
mod decode;
mod discovery;
mod formatter;

use crate::commands::*;

fn main() {
    let matches = clap_app!(
        @app (app_from_crate!())
        (@arg MSGTYPE: --msgtype +takes_value +global conflicts_with[CONVERT]
            "Sets protobuf message type")
        (@arg STREAM: --stream +takes_value "Enables stream + sets stream type")
        (@arg COUNT: --count +takes_value +global "Stop after count messages")
        (@arg CONVERT: --convert +takes_value +global "Convert to different stream type")
        (@arg EXTRA_FDSET_DIRS: --fdsetdir +takes_value +global +multiple
             "[repeatable] Specify dirs to load fdset files from")
        (@arg EXTRA_FDSET_FILES: --fdsetfile +takes_value +global +multiple
             "[repeatable] Specify an fdset file")
        (@arg EXTRA_PROTO_FILE: --protofile +takes_value +global
             "Specify a proto file")
        (@arg PRETTY_JSON: --prettyjson +global
            "Force pretty json formatter. Default is pretty for a tty, otherwise compact")
        (@subcommand kafka =>
            (@arg TOPIC: +required "Sets the kafka topic")
            (@arg BROKERS: +required --brokers +takes_value "Comma-separated kafka brokers")
            (@arg FROMBEG: --beginning "Consume topic from beginning")
        )
    )
    .get_matches();

    let extra_fdset_dirs = match matches.values_of("EXTRA_FDSET_DIRS") {
        Some(dirs) => dirs.map(std::path::PathBuf::from).collect::<Vec<_>>(),
        None => vec![],
    };

    let extra_fdset_files = match matches.values_of("EXTRA_FDSET_FILES") {
        Some(files) => files.map(std::path::PathBuf::from).collect::<Vec<_>>(),
        None => vec![],
    };

    let extra_proto_file = matches.value_of("EXTRA_PROTO_FILE");
    let prettyjson = matches.is_present("PRETTY_JSON");

    let cmd = CommandRunner::new(
        extra_fdset_dirs,
        extra_fdset_files,
        extra_proto_file,
        prettyjson,
    );

    match matches.subcommand() {
        ("kafka", Some(m)) => cmd.run_kafka(m),
        _ => cmd.run_byte(&matches),
    }
}


================================================
FILE: stream-delimit/Cargo.toml
================================================
[package]
name = "stream_delimit"
version = "0.5.7"
authors = ["Sevag Hanssian <sevag.hanssian@gmail.com>"]
description = "length delimited protobuf stream separator"
repository = "https://github.com/sevagh/pq/tree/master/stream_delimit"
documentation = "http://docs.rs/stream_delimit/"
readme = "README.md"
license = "MIT"
keywords = ["protobuf", "serde"]
edition = "2018"

[dependencies]
kafka = { version = "0.8", optional = true }
byteorder = "1.3"

[features]
default = []
with_kafka = ["kafka"]


================================================
FILE: stream-delimit/LICENSE
================================================
MIT License

Copyright (c) 2017 Sevag Hanssian

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


================================================
FILE: stream-delimit/README.md
================================================
# stream_delimit [![Crates.io](https://img.shields.io/crates/v/stream_delimit.svg)](https://crates.io/crates/stream_delimit) [![Crates.io](https://img.shields.io/crates/d/stream_delimit.svg)](https://github.com/sevagh/pq/tree/master/stream-delimit)

A helper crate for pq.


### Varints

https://developers.google.com/protocol-buffers/docs/encoding#varints


================================================
FILE: stream-delimit/src/byte_consumer.rs
================================================
#![deny(missing_docs)]

use crate::stream::*;
use crate::{error::StreamDelimitError, varint::decode_varint};
use byteorder::{BigEndian, ReadBytesExt};
use std::{
    io::{self, Read},
    num::NonZeroUsize,
};

/// A consumer for a byte stream
pub struct ByteConsumer<T: Read> {
    read: T,
    type_: StreamType,
}

impl<T: Read> ByteConsumer<T> {
    /// Return a ByteConsumer from for single messages, varint or leb128-delimited
    pub fn new(read: T, type_: StreamType) -> ByteConsumer<T> {
        ByteConsumer { read, type_ }
    }

    fn read_next_frame_length(&mut self) -> io::Result<Option<NonZeroUsize>> {
        let r = match self.type_ {
            StreamType::Leb128 | StreamType::Varint => decode_varint(&mut self.read)
                .map_err(|e| {
                    // For unified error handling we force everything into io::Error
                    match e {
                        StreamDelimitError::VarintDecodeError(i) => i,
                        e => io::Error::new(io::ErrorKind::InvalidData, format!("{}", e)),
                    }
                })
                .map(|v| NonZeroUsize::new(v as usize)),
            StreamType::I32BE => self
                .read
                .read_i32::<BigEndian>()
                .map(|v| NonZeroUsize::new(v as usize)),
            StreamType::Single => Ok(None),
        };

        // In the cases where we have hit the end of the stream, read_i32 will return UnexpectedEof
        // we treat this as no more data
        match r {
            Err(e) if e.kind() == io::ErrorKind::UnexpectedEof => Ok(None),
            a => a,
        }
    }
}

impl<T: Read> Iterator for ByteConsumer<T> {
    type Item = Vec<u8>;

    fn next(&mut self) -> Option<Self::Item> {
        let mut buffer = Vec::new();
        self.read_next_frame(&mut buffer).ok()??;
        Some(buffer)
    }
}

impl<T: Read> FramedRead for ByteConsumer<T> {
    fn read_next_frame<'a>(&mut self, buffer: &'a mut Vec<u8>) -> io::Result<Option<&'a [u8]>> {
        let r = match self.read_next_frame_length()? {
            Some(length) => {
                buffer.clear();
                let mut take = (&mut self.read).take(length.get() as u64);
                take.read_to_end(buffer)?;
                Some(&buffer[..])
            }
            // the single stream type does not have a defined length, so read_next_frame_length will return None
            // and we catch that special case here
            None if self.type_ == StreamType::Single => {
                buffer.clear();
                if self.read.read_to_end(buffer)? > 0 {
                    Some(&buffer[..])
                } else {
                    None
                }
            }
            _ => None,
        };
        Ok(r)
    }
}


================================================
FILE: stream-delimit/src/converter.rs
================================================
#![deny(missing_docs)]

use crate::stream::*;
use crate::varint::encode_varint;

/// A Converter struct to convert from a stream iterator to another `StreamType`
/// Useful for example to dump Kafka messages to a varint-delimited text file
pub struct Converter<'a> {
    stream_src: &'a mut dyn Iterator<Item = Vec<u8>>,
    stream_dest: StreamType,
}

impl<'a> Converter<'a> {
    /// Return a converter from a stream iterator
    pub fn new<T: Iterator<Item = Vec<u8>>>(
        stream_src: &'a mut T,
        stream_dest: StreamType,
    ) -> Converter<'a> {
        Converter {
            stream_src,
            stream_dest,
        }
    }
}

impl<'a> Iterator for Converter<'a> {
    type Item = Vec<u8>;

    fn next(&mut self) -> Option<Vec<u8>> {
        match self.stream_dest {
            StreamType::Varint | StreamType::Leb128 => match self.stream_src.next() {
                Some(ref mut x) => {
                    let mut lead_varint = encode_varint(x.len() as u64);
                    lead_varint.append(x);
                    Some(lead_varint)
                }
                None => None,
            },
            _ => unimplemented!(),
        }
    }
}


================================================
FILE: stream-delimit/src/error.rs
================================================
use std::error::Error;
use std::fmt;
use std::io;
use std::result;

pub type Result<T> = result::Result<T, StreamDelimitError>;

#[derive(Debug)]
pub enum StreamDelimitError {
    #[cfg(feature = "with_kafka")]
    KafkaInitializeError(::kafka::error::Error),
    VarintDecodeError(io::Error),
    InvalidStreamTypeError(String),
    VarintDecodeMaxBytesError,
}

impl fmt::Display for StreamDelimitError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match *self {
            #[cfg(feature = "with_kafka")]
            StreamDelimitError::KafkaInitializeError(ref e) => {
                write!(f, "Couldn't initialize kafka consumer: {}", e)
            }
            StreamDelimitError::VarintDecodeError(ref e) => {
                write!(f, "Couldn't decode leading varint: {}", e)
            }
            StreamDelimitError::InvalidStreamTypeError(ref t) => write!(
                f,
                "Invalid stream type: {} (only support single,leb128,varint)",
                t
            ),
            StreamDelimitError::VarintDecodeMaxBytesError => {
                write!(f, "Exceeded max attempts to decode leading varint")
            }
        }
    }
}

impl Error for StreamDelimitError {
    fn description(&self) -> &str {
        match *self {
            #[cfg(feature = "with_kafka")]
            StreamDelimitError::KafkaInitializeError(_) => "couldn't initialize kafka consumer",
            StreamDelimitError::VarintDecodeError(_)
            | StreamDelimitError::VarintDecodeMaxBytesError => "couldn't decode leading varint",
            StreamDelimitError::InvalidStreamTypeError(_) => "invalid stream type",
        }
    }

    fn cause(&self) -> Option<&dyn Error> {
        match *self {
            #[cfg(feature = "with_kafka")]
            StreamDelimitError::KafkaInitializeError(ref e) => Some(e),
            StreamDelimitError::VarintDecodeError(ref e) => Some(e),
            StreamDelimitError::InvalidStreamTypeError(_)
            | StreamDelimitError::VarintDecodeMaxBytesError => None,
        }
    }
}


================================================
FILE: stream-delimit/src/kafka_consumer.rs
================================================
#![deny(missing_docs)]

use crate::error::*;
use crate::stream::FramedRead;
use kafka::consumer::{Consumer, FetchOffset};
use std::collections::VecDeque;

/// A consumer from Kafka
pub struct KafkaConsumer {
    consumer: Consumer,
    messages: VecDeque<Vec<u8>>,
}

impl FramedRead for KafkaConsumer {
    fn read_next_frame<'a>(
        &mut self,
        buffer: &'a mut Vec<u8>,
    ) -> std::io::Result<Option<&'a [u8]>> {
        let res = self.next().map(move |mut v| {
            std::mem::swap(&mut v, buffer);
            &buffer[..]
        });
        Ok(res)
    }
}

impl Iterator for KafkaConsumer {
    type Item = Vec<u8>;

    fn next(&mut self) -> Option<Vec<u8>> {
        if self.messages.is_empty() {
            let kafka_consumer = &mut self.consumer;
            loop {
                match kafka_consumer.poll() {
                    Ok(mss) => {
                        for ms in mss.iter() {
                            self.messages.append(
                                &mut ms
                                    .messages()
                                    .iter()
                                    .map(|z| z.value.to_vec())
                                    .collect::<VecDeque<_>>(),
                            );
                            kafka_consumer
                                .consume_messageset(ms)
                                .expect("Couldn't mark messageset as consumed");
                        }
                        kafka_consumer
                            .commit_consumed()
                            .expect("Couldn't commit consumption");
                        if !self.messages.is_empty() {
                            break;
                        }
                    }
                    Err(e) => {
                        eprintln!("{}", e);
                        return None;
                    }
                }
            }
        }
        self.messages.pop_front()
    }
}

impl KafkaConsumer {
    /// Return a KafkaConsumer with some basic kafka connection properties
    pub fn new(brokers: &str, topic: &str, from_beginning: bool) -> Result<KafkaConsumer> {
        let fetch_offset = if from_beginning {
            FetchOffset::Earliest
        } else {
            FetchOffset::Latest
        };
        match Consumer::from_hosts(
            brokers
                .split(',')
                .map(std::borrow::ToOwned::to_owned)
                .collect::<Vec<String>>(),
        )
        .with_topic(topic.to_owned())
        .with_fallback_offset(fetch_offset)
        .with_fetch_max_bytes_per_partition(1024 * 1024)
        .create()
        {
            Ok(consumer) => Ok(KafkaConsumer {
                consumer,
                messages: VecDeque::new(),
            }),
            Err(e) => Err(StreamDelimitError::KafkaInitializeError(e)),
        }
    }
}


================================================
FILE: stream-delimit/src/lib.rs
================================================
extern crate byteorder;
#[cfg(feature = "with_kafka")]
extern crate kafka;

mod varint;

pub mod error;

/// Utilities to consume from a byte stream
pub mod byte_consumer;

/// Utilities to convert between stream types
pub mod converter;

/// Define stream types
pub mod stream;

#[cfg(feature = "with_kafka")]
/// Utilities to consume from Kafka
pub mod kafka_consumer;


================================================
FILE: stream-delimit/src/stream.rs
================================================
#![deny(missing_docs)]

use std::io;

use crate::error::*;

/// An enum type for byte streams
#[derive(PartialEq, Eq)]
pub enum StreamType {
    /// Protobuf messages with leading length encoded in leb128
    Leb128,
    /// Protobuf messages with leading length encoded in varint
    Varint,
    /// Protobuf messages with leading length encoded as
    /// binary big endian 32-bit signed integer
    I32BE,
    /// Single protobuf messages with no separators/delimiters
    Single,
}

/// Convert &str to associated `StreamType`
pub fn str_to_streamtype(input: &str) -> Result<StreamType> {
    match input {
        "single" => Ok(StreamType::Single),
        "varint" => Ok(StreamType::Varint),
        "leb128" => Ok(StreamType::Leb128),
        "i32be" => Ok(StreamType::I32BE),
        _ => Err(StreamDelimitError::InvalidStreamTypeError(
            input.to_string(),
        )),
    }
}

/// A trait for a stream that can be read in clearly defined chunks
pub trait FramedRead {
    /// should read the next available frame into the provided buffer.
    /// clear() will be called before the buffer is filled
    fn read_next_frame<'a>(&mut self, buffer: &'a mut Vec<u8>) -> io::Result<Option<&'a [u8]>>;
}


================================================
FILE: stream-delimit/src/varint.rs
================================================
#![deny(missing_docs)]

use crate::error::*;
use std::io::Read;

const VARINT_MAX_BYTES: usize = 10;

pub fn decode_varint(read: &mut dyn Read) -> Result<u64> {
    let mut varint_buf: Vec<u8> = Vec::new();
    for i in 0..VARINT_MAX_BYTES {
        varint_buf.push(0u8);
        match read.read_exact(&mut varint_buf[i..]) {
            Ok(_) => (),
            Err(e) => return Err(StreamDelimitError::VarintDecodeError(e)),
        }
        if (varint_buf[i] & 0x80) == 0 {
            let mut concat: u64 = 0;
            for (j, &byte) in varint_buf[..=i].iter().enumerate() {
                concat |= u64::from(byte & 0x7f) << (j * 7);
            }
            return Ok(concat);
        }
    }
    Err(StreamDelimitError::VarintDecodeMaxBytesError)
}

pub fn encode_varint(mut value: u64) -> Vec<u8> {
    let mut ret = vec![0u8; VARINT_MAX_BYTES];
    let mut n = 0;
    while value > 127 {
        ret[n] = 0x80 | (value & 0x7F) as u8;
        value >>= 7;
        n += 1
    }
    ret[n] = value as u8;
    n += 1;
    ret[0..n].to_vec()
}

#[cfg(test)]
mod tests {
    use super::*;
    use std::io::Cursor;

    #[test]
    fn test_simple() {
        assert_eq!(
            1,
            decode_varint(&mut Cursor::new(encode_varint(1))).unwrap()
        );
    }

    #[test]
    fn test_two_byte_varint() {
        assert_eq!(
            300,
            decode_varint(&mut Cursor::new(encode_varint(300))).unwrap()
        );
    }

    #[test]
    fn test_decode_known_varint_bytes() {
        let cases: &[(u64, &[u8])] = &[
            (0, &[0x00]),
            (1, &[0x01]),
            (127, &[0x7f]),
            (128, &[0x80, 0x01]),
            (300, &[0xac, 0x02]),
            (16384, &[0x80, 0x80, 0x01]),
            (2097152, &[0x80, 0x80, 0x80, 0x01]),
            (u32::MAX as u64, &[0xff, 0xff, 0xff, 0xff, 0x0f]),
            (
                u64::MAX,
                &[0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x01],
            ),
        ];

        for &(expected, bytes) in cases {
            assert_eq!(expected, decode_varint(&mut Cursor::new(bytes)).unwrap());
        }
    }

    #[test]
    fn test_three_byte_varint() {
        // 16384 requires 3 bytes: 0x80 0x80 0x01
        // This would fail with the old buggy shift formula
        assert_eq!(
            16384,
            decode_varint(&mut Cursor::new(encode_varint(16384))).unwrap()
        );
        assert_eq!(
            100000,
            decode_varint(&mut Cursor::new(encode_varint(100000))).unwrap()
        );
    }

    #[test]
    fn test_four_byte_varint() {
        // 2097152 requires 4 bytes
        assert_eq!(
            2097152,
            decode_varint(&mut Cursor::new(encode_varint(2097152))).unwrap()
        );
        assert_eq!(
            10000000,
            decode_varint(&mut Cursor::new(encode_varint(10000000))).unwrap()
        );
    }

    #[test]
    fn test_large_varints() {
        assert_eq!(
            u32::MAX as u64,
            decode_varint(&mut Cursor::new(encode_varint(u32::MAX as u64))).unwrap()
        );
        assert_eq!(
            u64::MAX,
            decode_varint(&mut Cursor::new(encode_varint(u64::MAX))).unwrap()
        );
    }
}


================================================
FILE: tests/README.md
================================================
Samples and fdset files compiled from the tools in the https://github.com/sevagh/protobuf-test-utils repo.


================================================
FILE: tests/fdsets/cat.fdset
================================================

<
	cat.protocom.example.cat"
Cat
is_lazy
 (RisLazy

================================================
FILE: tests/fdsets/dog.fdset
================================================

m
	dog.protocom.example.dog"O
Dog
breed
 (	Rbreed
age (Rage 
temperament (	Rtemperament

================================================
FILE: tests/fdsets/person.fdset
================================================

P
person.protocom.example.person",
Person
name
 (	Rname
id (Rid

================================================
FILE: tests/fdsets-invalid/.gitignore
================================================
*
!.gitignore


================================================
FILE: tests/protos/dog.proto
================================================
package com.example.dog;

message Dog {
  required string breed = 1;
  required int32 age = 2;
  optional string temperament = 3;
}


================================================
FILE: tests/samples/bad
================================================
thisisnotprotobuf

================================================
FILE: tests/samples/dog
================================================

gsdexcited

================================================
FILE: tests/samples/dog_stream
================================================


rottweilerchill

================================================
FILE: tests/test_pqrs_bin.rs
================================================
use assert_cli;

use std::env;

fn get_test_dir(final_piece: &str) -> String {
    let mut cwd = env::current_dir().unwrap();
    cwd.push("tests");
    cwd.push(final_piece);
    String::from(cwd.to_str().unwrap())
}

#[test]
fn test_dog_decode() {
    assert_cli::Assert::main_binary()
        .with_env(assert_cli::Environment::inherit().insert("FDSET_PATH", get_test_dir("fdsets")))
        .with_args(&["--msgtype=com.example.dog.Dog"])
        .stdin(include_str!("samples/dog"))
        .succeeds()
        .and()
        .stdout()
        .contains("{\"breed\":\"gsd\",\"age\":3,\"temperament\":\"excited\"}")
        .unwrap();
}

#[test]
fn test_dog_decode_stream() {
    assert_cli::Assert::main_binary()
        .with_env(assert_cli::Environment::inherit().insert("FDSET_PATH", get_test_dir("fdsets")))
        .with_args(&["--msgtype=com.example.dog.Dog", "--stream=varint"])
        .stdin(include_str!("samples/dog_stream"))
        .succeeds()
        .and()
        .stdout()
        .contains("{\"breed\":\"rottweiler\",\"age\":2,\"temperament\":\"chill\"}")
        .unwrap();
}

#[test]
fn test_dog_decode_i32be_stream() {
    assert_cli::Assert::main_binary()
        .with_env(assert_cli::Environment::inherit().insert("FDSET_PATH", get_test_dir("fdsets")))
        .with_args(&["--msgtype=com.example.dog.Dog", "--stream=i32be"])
        .stdin(include_str!("samples/dog_i32be_stream"))
        .succeeds()
        .and()
        .stdout()
        .contains("{\"breed\":\"gsd\",\"age\":3,\"temperament\":\"excited\"}")
        .unwrap();
}

#[test]
fn test_nonexistent_fdset_dir() {
    assert_cli::Assert::main_binary()
        .with_env(
            assert_cli::Environment::inherit()
                .insert("FDSET_PATH", get_test_dir("fdsets-doesnt-exist")),
        )
        .with_args(&["--msgtype=com.example.dog.Dog"])
        .stdin(include_str!("samples/dog"))
        .fails()
        .and()
        .stderr()
        .contains("No valid fdset files found. Checked:")
        .unwrap();
}

#[test]
fn test_no_fdset_files() {
    assert_cli::Assert::main_binary()
        .with_env(
            assert_cli::Environment::inherit().insert("FDSET_PATH", get_test_dir("fdsets-invalid")),
        )
        .with_args(&["--msgtype=com.example.dog.Dog"])
        .stdin(include_str!("samples/dog"))
        .fails()
        .and()
        .stderr()
        .contains("No valid fdset files found. Checked:")
        .unwrap();
}

#[test]
fn test_person_decode() {
    assert_cli::Assert::main_binary()
        .with_env(assert_cli::Environment::inherit().insert("FDSET_PATH", get_test_dir("fdsets")))
        .with_args(&["--msgtype=com.example.person.Person"])
        .stdin(include_str!("samples/person"))
        .succeeds()
        .and()
        .stdout()
        .contains("{\"name\":\"khosrov\",\"id\":0}")
        .unwrap();
}

#[test]
fn test_bad_input() {
    assert_cli::Assert::main_binary()
        .with_env(assert_cli::Environment::inherit().insert("FDSET_PATH", get_test_dir("fdsets")))
        .with_args(&["--msgtype=com.example.dog.Dog"])
        .stdin(include_str!("samples/bad"))
        .fails()
        .and()
        .stderr()
        .contains("protobuf error")
        .unwrap();
}

#[test]
fn test_person_decode_with_command_line_fdset_dir() {
    assert_cli::Assert::main_binary()
        .with_args(&[
            "--msgtype=com.example.person.Person",
            &format!("--fdsetdir={0}", get_test_dir("fdsets")),
        ])
        .stdin(include_str!("samples/person"))
        .succeeds()
        .and()
        .stdout()
        .contains("{\"name\":\"khosrov\",\"id\":0}")
        .unwrap();
}

#[test]
fn test_person_decode_with_command_line_fdset_file() {
    assert_cli::Assert::main_binary()
        .with_args(&[
            "--msgtype=com.example.person.Person",
            &format!("--fdsetfile={0}", get_test_dir("fdsets/person.fdset")),
        ])
        .stdin(include_str!("samples/person"))
        .succeeds()
        .and()
        .stdout()
        .contains("{\"name\":\"khosrov\",\"id\":0}")
        .unwrap();
}

#[test]
fn test_no_args() {
    assert_cli::Assert::main_binary()
        .fails()
        .and()
        .stderr()
        .contains("No valid fdset files found")
        .unwrap();
}

#[test]
fn test_cat_noncanonical_decode() {
    assert_cli::Assert::main_binary()
        .with_args(&[
            "--msgtype=com.example.cat.Cat",
            &format!("--fdsetfile={0}", get_test_dir("fdsets/cat.fdset")),
        ])
        .stdin(include_str!("samples/cat"))
        .succeeds()
        .and()
        .stdout()
        .contains("{\"is_lazy\":false}")
        .unwrap();
}

#[test]
#[ignore]
fn test_cat_canonical_decode() {
    assert_cli::Assert::main_binary()
        .with_args(&[
            "--msgtype=com.example.cat.Cat",
            &format!("--fdsetfile={0}", get_test_dir("fdsets/cat.fdset")),
        ])
        .stdin(include_str!("samples/cat"))
        .succeeds()
        .and()
        .stdout()
        .contains("{\"isLazy\":false}")
        .unwrap();
}

#[test]
fn test_dog_decode_from_proto() {
    assert_cli::Assert::main_binary()
        .with_env(
            assert_cli::Environment::inherit().insert("PROTOC_INCLUDE", get_test_dir("protos")),
        )
        .with_args(&[
            "--msgtype=com.example.dog.Dog",
            &format!("--protofile={0}", get_test_dir("protos/dog.proto")),
        ])
        .stdin(include_str!("samples/dog"))
        .succeeds()
        .and()
        .stdout()
        .contains("{\"breed\":\"gsd\",\"age\":3,\"temperament\":\"excited\"}")
        .unwrap();
}


================================================
FILE: utils/.gitignore
================================================
*_pb2.py
*.fdset
__pycache__
*.pyc


================================================
FILE: utils/GNUmakefile
================================================
PROTOS := $(wildcard *.proto)
FDSETS := $(patsubst %.proto,%.fdset,$(PROTOS))

all: $(FDSETS)

py:
	@protoc --python_out . ./*.proto -I./

%.fdset: %.proto
	@protoc -o ./$@ ./$^ -I./

.PHONY: clean

clean:
	-rm -rf ./*.fdset ./*_pb2.py ./*_pb3.py __pycache__


================================================
FILE: utils/README.txt
================================================
Protobuf sample files and generators for pq testing.


================================================
FILE: utils/cat.proto
================================================
package com.example.cat;

message Cat {
  required bool is_lazy = 1;
}


================================================
FILE: utils/dog.proto
================================================
package com.example.dog;

message Dog {
  required string breed = 1;
  required int32 age = 2;
  optional string temperament = 3;
}


================================================
FILE: utils/person.proto
================================================
package com.example.person;

message Person {
  required string name = 1;
  required int32 id = 2;
}


================================================
FILE: utils/proto_encoder.py
================================================
#!/usr/bin/env python3

import dog_pb2
import person_pb2
import cat_pb2
import sys
import random
from google.protobuf.internal import encoder
from optparse import OptionParser


def single(msgtype, stream=False):
    if msgtype == "cat":
        obj = cat_pb2.Cat(is_lazy=bool(random.getrandbits(1)))
    elif msgtype == "dog":
        obj = dog_pb2.Dog(
            age=random.choice(range(0, 20)),
            breed=["rottweiler", "gsd", "poodle"][random.choice(range(0, 3))],
            temperament=["chill", "aggressive", "excited"][random.choice(range(0, 3))],
        )
    elif msgtype == "person":
        obj = person_pb2.Person(
            id=random.choice(range(0, 4)),
            name=["raffi", "khosrov", "vahaken"][random.choice(range(0, 3))],
        )
    else:
        usage()
    obj = obj.SerializeToString()
    varint_ = encoder._VarintBytes(len(obj)) if stream else b""
    sys.stdout.buffer.write(varint_ + obj)


def stream(msgtype, limit):
    for _ in range(limit):
        single(msgtype, stream=True)


def usage():
    print(
        "Usage: {0} <single|stream> <dog|person|cat>"
        " [--count c]".format(sys.argv[0]),
        file=sys.stderr,
    )
    sys.exit(1)


if __name__ == "__main__":
    parser = OptionParser()
    parser.add_option("--count", dest="count", help="stream count", metavar="COUNT")
    (options, args) = parser.parse_args(args=sys.argv)
    if len(args) != 3:
        usage()

    if args[1] == "single":
        single(args[2])
    elif args[1] == "stream":
        stream(args[2], int(options.count))


================================================
FILE: utils/requirements.txt
================================================
protobuf