Merge pull request #233 from anandrgitnirman/prodversion

set the daemon build version details using ldflags

.circleci/config.yml

@@ -20,7 +20,7 @@ jobs:
           command: ./scripts/install
       - run:
           name: Run build script
-          command: ./scripts/build linux amd64
+          command: ./scripts/build linux amd64 `git describe --tag`
       - run:
           name: Run test script
           command: ./scripts/test

README.md

@@ -60,8 +60,10 @@ $ ./scripts/install
 ```
 
 * Build snet-daemon (on Linux amd64 platform), see below section if you want to cross compile instead.
+Please note using ldflags, the latest tagged version , sha1 revision and the build time are set as part of the build.
+You need to pass the version as shown in the example below 
 ```bash
-$ ./scripts/build linux amd64
+$ ./scripts/build linux amd64 v.0.1.8
 ```
 
 * Generate default config file  snet-daemon (on Linux amd64 platform)
@@ -76,6 +78,12 @@ If you want to build snetd for platforms other than the one you are on, run `./s
 
 You can edit the script to choose a specific platform, but by default it will build for Linux, OSX, and Windows (amd64 for all, except Linux which will also build for arm6)
 
+Please note using ldflags the latest tagged version (passed as the first parameter to the script) , sha1 revision and the build time are set as part of the build.
+
+```bash
+$ ./scripts/build-xgo v.0.1.8
+```
+
 #### Run Deamon
 ```bash
 $ ../build/snetd-linux-amd64

scripts/build

@@ -4,6 +4,12 @@ set -ex
 
 PARENT_PATH=$(dirname $(cd $(dirname $0); pwd -P))
 
+
+if [ $# -lt 3 ]
+  then
+    echo "arguments expected are of the form <OS> <PLATFORM> and <VERSION> for the build script , as an example: '/scripts/build linux amd64 v.0.1.8'"
+    exit 1
+fi
 pushd $PARENT_PATH
 mkdir -p build
 now=$(date +'%Y-%m-%d_%T')

scripts/build-xgo

@@ -5,6 +5,11 @@ set -ex
 PARENT_PATH=$(dirname $(cd $(dirname $0); pwd -P))
 pushd $PARENT_PATH
 
+if [ $# -eq 0 ]
+  then
+    echo "Please pass the latest tagged version of the Daemon as an argument.The version passed will be used by the ldflags to set accordingly."
+    exit 1
+fi
 # Make sure we have xgo
 go get -u github.com/karalabe/xgo
 
@@ -25,5 +30,7 @@ GO_VERSION=1.10.x
 
 # See here for details
 # https://github.com/karalabe/xgo#limit-build-targets
+now=$(date +'%Y-%m-%d_%T')
+#latest version tag is passed as a param to this script.
 TARGETS=linux/amd64,linux/arm-6,darwin-10.6/amd64,windows/amd64
-xgo -dest build -go $GO_VERSION -targets=$TARGETS ./snetd
+xgo -dest build -go $GO_VERSION -ldflags "-X github.com/singnet/snet-daemon/config.sha1Revision=`git rev-parse HEAD` -X github.com/singnet/snet-daemon/config.versionTag=$1 -X github.com/singnet/snet-daemon/config.buildTime=$now" -targets=$TARGETS ./snetd