Added Dockerized support

.gitignore

@@ -3,3 +3,5 @@ node_modules
 target
 scratch
 *.iml
+compiled/*
+m2_cache/*

README.md

@@ -11,17 +11,27 @@ Installation
 
 ```
 git clone <this project>
-mvn package
+docker-compose run grib2json ./build
 ```
 
-This creates a .tar.gz in the target directory. Unzip and untar the package in a location of choice.
+*You have two choices*:
+    - Use docker to run grib2json (No local java dependencies required)    
+    ```
+    export PATH=$PATH:/path/to/this/dir/
+    ```
+    - Or use provided executable (Local java dependencies required)
+    ```
+    export PATH=$PATH:/path/to/this/dir/compiled/grib2json/bin
+    ```
 
 Usage
 -----
 
 The `grib2json` launch script is located in the `bin` directory and requires the `JAVA_HOME` environment
 variable to be defined.
 
+**Note that using the docker to run grib2json requires the output to be saved in `/usr/src/app/output` **
+
 ```
 > grib2json --help
 Usage: grib2json [options] FILE

build

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+set -ux
+mvn package
+
+tar -xvzf /usr/src/app/target/grib2json-0.8.0-SNAPSHOT.tar.gz -C /usr/src/app/compiled/
+rm -Rf /usr/src/app/target
+mv /usr/src/app/compiled/grib2json-0.8.0-SNAPSHOT /usr/src/app/compiled/grib2json

compiled/grib2json/LICENSE.md

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 Cameron Beccario
+
+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.

compiled/grib2json/README.md

@@ -0,0 +1,74 @@
+grib2json
+=========
+
+A command line utility that decodes [GRIB2](http://en.wikipedia.org/wiki/GRIB) files as JSON.
+
+This utility uses the netCDF-Java GRIB decoder, part of the [THREDDS](https://github.com/Unidata/thredds) project
+by University Corporation for Atmospheric Research/Unidata.
+
+Installation
+------------
+
+```
+git clone <this project>
+docker-compose run grib2json ./build
+
+export PATH=$PATH:/path/to/this/dir/bin
+```
+
+This creates a .tar.gz in the target directory. Unzip and untar the package in a location of choice.
+
+Usage
+-----
+
+The `grib2json` launch script is located in the `bin` directory and requires the `JAVA_HOME` environment
+variable to be defined.
+
+```
+> grib2json --help
+Usage: grib2json [options] FILE
+	[--compact -c] : enable compact Json formatting
+	[--data -d] : print GRIB record data
+	[--filter.category --fc value] : select records with this numeric category
+	[--filter.parameter --fp value] : select records with this numeric parameter
+	[--filter.surface --fs value] : select records with this numeric surface type
+	[--filter.value --fv value] : select records with this numeric surface value
+	[--help -h] : display this help
+	[--names -n] : print names of numeric codes
+	[--output -o value] : write output to the specified file (default is stdout)
+	[--verbose -v] : enable logging to stdout
+```
+
+For example, the following command outputs to stdout the records for parameter 2 (U-component_of_wind), with
+surface type 103 (Specified height level above ground), and surface value 10.0 meters from the GRIB2 file
+_gfs.t18z.pgrbf00.2p5deg.grib2_. Notice the optional inclusion of human-readable _xyzName_ keys and the data array:
+
+```
+> grib2json --names --data --fp 2 --fs 103 --fv 10.0 gfs.t18z.pgrbf00.2p5deg.grib2
+
+[
+    {
+        "header":{
+            "discipline":0,
+            "disciplineName":"Meteorological products",
+            "gribEdition":2,
+            "gribLength":27759,
+            "center":7,
+            "centerName":"US National Weather Service - NCEP(WMC)",
+            "parameterNumber":2,
+            "parameterNumberName":"U-component_of_wind",
+            "parameterUnit":"m.s-1",
+            "surface1Type":103,
+            "surface1TypeName":"Specified height level above ground",
+            "surface1Value":10.0,
+            ...
+        },
+        "data":[
+            -2.12,
+            -2.27,
+            -2.41,
+            ...
+        ]
+    }
+]
+```

compiled/grib2json/bin/grib2json

@@ -0,0 +1,5 @@
+#!/bin/sh
+#set -x
+LIB_DIR=$(dirname "$0")/../lib
+LAUNCH_JAR=$LIB_DIR/grib2json-*.jar
+$JAVA_HOME/bin/java -Xmx512M -jar $LAUNCH_JAR $@

compiled/grib2json/bin/grib2json.cmd

@@ -0,0 +1,4 @@
+@echo off
+set LIB_DIR="%~dp0..\lib"
+for /f "delims=X" %%i in ('dir /b %LIB_DIR%\grib2json-*.jar') do set LAUNCH_JAR=%LIB_DIR%\%%i
+"%JAVA_HOME%\bin\java.exe" -Xmx512M -jar %LAUNCH_JAR% %*

docker-compose.yml

@@ -0,0 +1,12 @@
+version: '2'
+services:
+    grib2json:
+        container_name: grib2json
+        build:
+            context: ./docker
+            dockerfile: Dockerfile
+        volumes:
+          - ../:/usr/src/app
+          - ../m2_cache:/home/temp/.m2
+        working_dir: /usr/src/app
+        entrypoint: ./docker-entrypoint.sh

docker/Dockerfile

@@ -0,0 +1,10 @@
+FROM maven:3-jdk-7
+
+ARG GOSU_VERSION=1.9
+ARG GOSU_DOWNLOAD_URL="https://github.com/tianon/gosu/releases/download/${GOSU_VERSION}/gosu-amd64"
+RUN curl -o gosu -fsSL "$GOSU_DOWNLOAD_URL" > gosu-amd64 \
+ && mv gosu /usr/bin/gosu \
+ && chmod +x /usr/bin/gosu
+
+RUN mkdir -p /usr/src/app
+WORKDIR /usr/src/app

docker/docker-entrypoint.sh

@@ -0,0 +1,8 @@
+#! /bin/sh
+
+set -ux
+export PATH=$PATH:/usr/src/app/compiled/grib2json/bin
+
+TEMP_UID="${TEMP_UID:-1000}"
+useradd -s /bin/false --no-create-home -u ${TEMP_UID} temp
+exec gosu temp $@

grib2json

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+docker-compose run grib2json grib2json $@