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+# XDS - X(cross) Development System Agent
+
+XDS-agent is a client that should run on your local / user development machine when you use XDS.
+
+This agent takes care, among others, of starting [Syncthing](https://syncthing.net/)
+tool to synchronize your project files from your local host to XDS build server
+machine or container (where `xds-server` is running).
+
+> **SEE ALSO**: [xds-server](https://github.com/iotbzh/xds-server), a web server
+used to remotely cross build applications.
+
+## How to install xds-agent
+
+### Install package for debian distro type
+
+```bash
+export DISTRO="Debian_8.0"
+wget -O - http://download.opensuse.org/repositories/isv:/LinuxAutomotive:/app-Development/${DISTRO}/Release.key | sudo apt-key add -
+sudo bash -c "cat >> /etc/apt/sources.list.d/AGL.list<<EOF
+deb http://download.opensuse.org/repositories/isv:/LinuxAutomotive:/app-Development/${DISTRO}/ ./
+EOF
+"
+sudo apt-get update
+sudo apt-get install agl-xds-agent
+```
+
+The value 'DISTRO' can be set to {Debian_8.0, Debian_9.0, xUbuntu_16.04, xUbuntu_16.10, xUbuntu_17.04}
+
+Update the package
+
+```bash
+sudo apt-get update
+sudo apt-get upgrade agl-xds-agent
+```
+
+The files are install here:
+
+```bash
+/opt/AGL/agl-xds-agent
+```
+
+### Install package for rpm distro type
+
+#### openSUSE
+
+```bash
+export DISTRO="openSUSE_Leap_42.2"
+sudo zypper ar http://download.opensuse.org/repositories/isv:/LinuxAutomotive:/app-Development/${DISTRO}/isv:LinuxAutomotive:app-Development.repo
+sudo zypper ref
+sudo zypper install agl-xds-agent
+```
+
+The value 'DISTRO' can be set to {openSUSE_Leap_42.2, openSUSE_Leap_42.3, openSUSE_Tumbleweed}
+
+Update the package
+
+```bash
+sudo zypper ref
+sudo zypper install --force agl-xds-agent
+```
+
+The files are install here:
+
+```bash
+/opt/AGL/agl-xds-agent
+```
+
+## How to install on other platform
+
+Download released tarballs from github [releases page](https://github.com/iotbzh/xds-agent/releases).
+
+Then unzip this tarball any where into your local disk (for example: /opt/AGL/xds or C:\AGL\xds).
+
+## Configuration
+
+xds-agent configuration is driven by a JSON config file (named `agent-config.json`).
+The tarball mentioned in previous section includes this file with default settings.
+
+Here is the logic to determine which `agent-config.json` file will be used:
+
+1. from command line option: `--config myConfig.json`
+1. `$HOME/.xds/agent/agent-config.json` file
+1. `/etc/xds-agent/agent-config.json` file
+1. `<xds-agent executable dir>/agent-config.json` file
+
+Supported fields in configuration file are (all fields are optional and example
+below corresponds to the default values):
+
+- **httpPort** : http port of agent REST interface
+- **logsDir**  : directory to store logs (eg. syncthing output)
+- **xds-apikey** : xds-agent api-key to use (always set value to "1234abcezam")
+- **syncthing.binDir** : syncthing binaries directory (default: executable directory)
+- **syncthing.home"** : syncthing home directory (usually .../syncthing-config)
+- **syncthing.gui-address** : syncthing gui url (default http://localhost:8384)
+- **syncthing.gui-apikey** : syncthing api-key to use (default auto-generated)
+
+```json
+{
+    "httpPort": "8010",
+    "logsDir": "/tmp/logs",
+    "xds-apikey": "1234abcezam",
+    "syncthing": {
+        "binDir": ".",
+        "home": "${HOME}/.xds/agent/syncthing-config",
+        "gui-address": "http://localhost:8384",
+        "gui-apikey": "1234abcezam",
+    }
+}
+```
+
+>**NOTE:** environment variables are supported by using `${MY_VAR}` syntax.
+
+## Start-up
+
+Simply to start `xds-agent` executable
+
+```bash
+./xds-agent &
+```
+
+>**NOTE** if need be, you can increase log level by setting option
+`--log <level>`, supported *level* are: panic, fatal, error, warn, info, debug.
+
+You can now use XDS dashboard and check that connection with `xds-agent` is up.
+(see also [xds-server README](https://github.com/iotbzh/xds-server/blob/master/README.md#xds-dashboard))
+
+## Build xds-agent from scratch
+
+### Dependencies
+
+Install and setup [Go](https://golang.org/doc/install) version 1.8 or
+higher to compile this tool.
+
+### Building
+
+Clone this repo into your `$GOPATH/src/github.com/iotbzh` and use delivered Makefile:
+
+```bash
+ mkdir -p $GOPATH/src/github.com/iotbzh
+ cd $GOPATH/src/github.com/iotbzh
+ git clone https://github.com/iotbzh/xds-agent.git
+ cd xds-agent
+ make all
+```
+
+And to install xds-agent (by default in `/usr/local/bin`):
+
+```bash
+make install
+```
+
+>**NOTE:** Used `DESTDIR` to specify another install directory
+>```bash
+>make install DESTDIR=$HOME/opt/xds-agent
+>```
+
+#### Cross build
+
+For example on a Linux machine to cross-build for Windows, just execute:
+
+```bash
+export GOOS=windows
+export GOARCH=amd64
+make all
+make package
+```