libhdfs binding and wrapper APIs for Rust

Related tags

Distributed systems hdfs-rs
Overview

hdfs-rs

libhdfs binding library and rust APIs which safely wraps libhdfs binding APIs

Current Status

  • Alpha Status (Rust wrapping APIs can be changed)
  • All libhdfs FFI APIs are ported.
  • Safe Rust wrapping APIs to cover some of the libhdfs APIs.

Documentation

Requirements

Usage

Add this to your Cargo.toml:

[dependencies]
hdfs = "0.0.4"

and this to your crate root:

extern crate hdfs;

hdfs-rs uses libhdfs, which is JNI native implementation. JNI native implementation requires the proper CLASSPATH. exec.sh included in the source code root plays a role to execute your program with the proper CLASSPATH. exec.sh requires HADOOP_HOME. So, you firstly set HADOOP_HOME shell environment variable as follows:

export HADOOP_HOME=<hadoop install dir>
```

Then, you can execute your program as follows:

```bash
./exec your_program arg1 arg2
```
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Comments
  • Rust wrapping for hdfs::binding::hdfsGetPathInfo()

    Rust wrapping for hdfs::binding::hdfsGetPathInfo()

    Hi,

    could you please add Rust wrapping for hdfs::binding::hdfsGetPathInfo()? If i understand it correctly, it's the only way to get actual block size for specific file. Other functions are returning only defualt block size (global or for some path). Thanks.

    enhancement 
    opened by dorny 5
  • Enable platform-dependent include path.

    Enable platform-dependent include path.

    Hi, I added some codes to enable platform-dependent include path. I'm a newbie of Rust, so my patch may not follow the conventional Rust code style. Welcome any comments.

    Review on Reviewable

    opened by jihoonson 2
  • The function `str_to_chars` in utils.rs returns the invalid address

    The function `str_to_chars` in utils.rs returns the invalid address

    util.rs

    pub fn str_to_chars(s: &str) -> *const c_char {
  CString::new(s.as_bytes()).unwrap().as_ptr()
}

    I think s doesn't live long enough. When this function returns, s has been dropped, so the address it returned leads an expected value.

    For example, I have to do this:

    original

      pub fn exist(&self, path: &str) -> bool {
    if unsafe {hdfsExists(self.raw, str_to_chars(path))} == 0 {
      true
    } else {
      false
    }
}

    new

      pub fn exist(&self, path: &str) -> bool {
    let path = CString::new(path.as_bytes()).unwrap();
    if unsafe {hdfsExists(self.raw, path.as_ptr())} == 0 {
      true
    } else {
      false
    }
  }
    opened by starccy 0
  • `exec.sh cargo test` failed

    `exec.sh cargo test` failed

    I'm trying to use this Hadoop 2.7.2. Compiled the native lib on Mac. cargo build works fine, but when exec.sh cargo test I got this:

    ➜  hdfs-rs (master) ✗ ./exec.sh cargo test
   Compiling hdfs v0.0.4 (file:///Users/chao/git/hdfs-rs)
warning: lint raw_pointer_derive has been removed: using derive with raw pointers is ok
   --> src/dfs.rs:273:9
    |
273 | #[allow(raw_pointer_derive)]
    |         ^^^^^^^^^^^^^^^^^^
    |
    = note: #[warn(renamed_and_removed_lints)] on by default

warning: lint raw_pointer_derive has been removed: using derive with raw pointers is ok
   --> src/dfs.rs:273:9
    |
273 | #[allow(raw_pointer_derive)]
    |         ^^^^^^^^^^^^^^^^^^

warning: unused import: `itertools::Itertools`
   --> src/dfs.rs:787:7
    |
787 |   use itertools::Itertools;
    |       ^^^^^^^^^^^^^^^^^^^^
    |
    = note: #[warn(unused_imports)] on by default

error: linking with `cc` failed: exit code: 1
  |
  = note: "cc" "-m64" "-L" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.158wz1xuz2s5vbhj.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.15ocno9e0gz60klj.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.16u6js6g0l3k1ic6.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.17erb31xn70viq4b.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.181cuta0v63atwcm.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.1e698527iprj2v8f.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.1ha8q1iwal888w5t.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.1im38lueib99jsk0.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.1jnlhyxj59jycbjv.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.1qko0s7o0yku8wi7.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.1y16o1qfye96o7m0.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.1zwd8n7bcl3vhvvh.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.22hy4jf5cexj8ofe.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.23ce453q2vda0cq6.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.23tqyymcb18u96mb.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.2bmdyctmqwyrczo2.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.2cf3hj3i603y6nxm.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.2jqywn86b2gsqohu.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.2lyh15q6cjwzy18c.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.2oiwwqohid6mabhc.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.2w6xsa2hbi53xhak.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.2xnvmuhjbhd7vxcm.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.2xs38k3nu4oe9uo6.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.2xwdgiv55wx7wpkg.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.3ayaeypdcro9d6yk.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.3cutt3lg8vmui89m.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.3g94tobrpgum5dk6.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.3ik0x0hz6l66cx38.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.3nb415nst569tn21.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.3oqznv5oym7l3m4e.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.3rngp6bm2u2q5z0y.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.3thsdxsfmyg8gwej.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.3vck0z67htzlxjio.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.3wta9ctgdrpkmlpr.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.41fhlsd7519xuco5.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.436dotimmrgzkwfa.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.43v6g0y2xsxoggnt.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.44bsbddupzfao2om.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.45pc7c65foh9i35f.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.48721dc4k5qxei0u.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.49a7n47po4ttqjl7.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.49lx1q7cxvpykyv0.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.49qmpuk8w1opmi5q.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.4brwxiorhmgsb6oc.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.4ezmh1vbs95c5ack.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.4g47d2sx6m33abop.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.4oc10dk278mpk1vy.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.4rzh6npf1tuwcxx9.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.4sw9hz7i7fiueihz.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.4v3lwapkm7lhovox.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.4xq48u46a1pwiqn7.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.4xuhwz5yy6q4gvgg.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.4yh8x2b62dcih00t.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.4ypvbwho0bu5tnww.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.4z8gk4dt64uq1bs.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.51s1w397y42gpez1.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.56dly8q07ws8ucdq.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.572bgozz9kcwe4zq.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.57k06xfugllsc526.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.5beqqbexwb143v6a.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.5by9xggibmun5kn9.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.5gf6du7k58s78kob.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.63mmpc50mjcb0lb.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.8xzrsc1ux72v29j.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.98g0d9x8aw3akpe.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.9elsx31vb4it187.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.c6lbtaiefvx3wya.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.d6p2df93qm1h3gm.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.e19kx9t7xhzajfl.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.mb501chi8fnqgmm.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.oa3rad818d8sgn4.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.y08g5q2x813c4wx.rcgu.o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.z9ox7biyn1otfln.rcgu.o" "-o" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55" "/Users/chao/git/hdfs-rs/target/debug/deps/hdfs-2b714980d01b0f55.crate.allocator.rcgu.o" "-Wl,-dead_strip" "-nodefaultlibs" "-L" "/Users/chao/git/hdfs-rs/target/debug/deps" "-L" "/opt/hadoop/lib/native" "-L" "/Users/chao/git/hdfs-rs/target/debug/build/hdfs-6b27ce521f6b3b8b/out" "-L" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib" "-l" "hdfs" "-l" "hdfs" "-Wl,-force_load,/Users/chao/git/hdfs-rs/target/debug/build/hdfs-6b27ce521f6b3b8b/out/libminidfs.a" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/libtest-0d97595764cf9b64.rlib" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/libterm-0f60ec9e394e0248.rlib" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/libgetopts-6f2ac69fc328f830.rlib" "/Users/chao/git/hdfs-rs/target/debug/deps/liburl-1012528998a3d996.rlib" "/Users/chao/git/hdfs-rs/target/debug/deps/libmatches-d634ed9077d128bf.rlib" "/Users/chao/git/hdfs-rs/target/debug/deps/libuuid-2cdedf5331d88c7d.rlib" "/Users/chao/git/hdfs-rs/target/debug/deps/librand-67af2eb6503806d0.rlib" "/Users/chao/git/hdfs-rs/target/debug/deps/librand-c95782c5d16a1bc5.rlib" "/Users/chao/git/hdfs-rs/target/debug/deps/liblibc-0819fa82d85a83bd.rlib" "/Users/chao/git/hdfs-rs/target/debug/deps/librustc_serialize-a4d600dec7edbf71.rlib" "/Users/chao/git/hdfs-rs/target/debug/deps/liblog-5e9334cd63f74e97.rlib" "/Users/chao/git/hdfs-rs/target/debug/deps/liblog-41e198eccb985521.rlib" "/Users/chao/git/hdfs-rs/target/debug/deps/libcfg_if-2bd44b22855dd866.rlib" "/Users/chao/git/hdfs-rs/target/debug/deps/liblibc-017538ef75185d0f.rlib" "/Users/chao/git/hdfs-rs/target/debug/deps/libitertools-a36391e000121329.rlib" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/libstd-81ad5fb7ec87f0fb.rlib" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/libpanic_unwind-2e56e130d8e4c4c5.rlib" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/liballoc_jemalloc-65f3bd01304e8cb7.rlib" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/libunwind-63ece1d61d0caa09.rlib" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/liballoc_system-1f539c0f734c73b4.rlib" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/liblibc-72ea87627c504b3f.rlib" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/liballoc-f664b1dcf152920f.rlib" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/libcore-39fcd66b77381104.rlib" "/Users/chao/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/x86_64-apple-darwin/lib/libcompiler_builtins-c6bbc2262c448bc9.rlib" "-l" "c" "-l" "m" "-l" "System" "-l" "resolv" "-l" "pthread" "-l" "c" "-l" "m"
  = note: Undefined symbols for architecture x86_64:
            "_hadoopConfSetStr", referenced from:
                _nmdConfigureShortCircuit in libminidfs.a(native_mini_dfs.o)
            "_hdfsDisableDomainSocketSecurity", referenced from:
                _nmdConfigureShortCircuit in libminidfs.a(native_mini_dfs.o)
            "_newRuntimeError", referenced from:
                _nmdConfigureShortCircuit in libminidfs.a(native_mini_dfs.o)
            "_getJNIEnv", referenced from:
                _nmdCreate in libminidfs.a(native_mini_dfs.o)
                _nmdFree in libminidfs.a(native_mini_dfs.o)
                _nmdShutdown in libminidfs.a(native_mini_dfs.o)
                _nmdGetNameNodePort in libminidfs.a(native_mini_dfs.o)
            "_newJavaStr", referenced from:
                _nmdCreate in libminidfs.a(native_mini_dfs.o)
            "_constructNewObjectOfClass", referenced from:
                _nmdCreate in libminidfs.a(native_mini_dfs.o)
            "_invokeMethod", referenced from:
                _nmdCreate in libminidfs.a(native_mini_dfs.o)
                _nmdShutdown in libminidfs.a(native_mini_dfs.o)
                _nmdGetNameNodePort in libminidfs.a(native_mini_dfs.o)
            "_printExceptionAndFree", referenced from:
                _nmdCreate in libminidfs.a(native_mini_dfs.o)
                _nmdShutdown in libminidfs.a(native_mini_dfs.o)
                _nmdGetNameNodePort in libminidfs.a(native_mini_dfs.o)
            "_printPendingExceptionAndFree", referenced from:
                _nmdCreate in libminidfs.a(native_mini_dfs.o)
          ld: symbol(s) not found for architecture x86_64
          clang: error: linker command failed with exit code 1 (use -v to see invocation)


error: aborting due to previous error

error: Could not compile `hdfs`.

To learn more, run the command again with --verbose.

    is version 2.7.2 supported by this library? do I need to have a running Hadoop environment on my Mac in order to run the tests? Thanks.

    opened by sunchao 3
Releases(release-0.0.3)

  • release-0.0.3(Oct 7, 2015)

    This release is considered alpha quality. We are still adding more wrapping APIs in order to fully cover the original native libhdfs APIs. Also, some wrapping APIs are still unstable, and their signature can be changed later.

    Major changes

    • All libhdfs APIs are ported.
    • Implemented safe and more idomatic rust APIs: HdfsFsCache, HdfsFile, HdfsUtil
    • HdfsFsCache, HdfsFile, HdfsUtil were reexported into the root module.
    • Fixed a bug caused by missed field in hdfsFileInfo
    Source code(tar.gz)
    Source code(zip)
Owner
Hyunsik Choi
Hyunsik Choi
GitHub
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