Merge pull request #22132 from yehudasa/wip-menv

ceph-menv: mrun shell environment

Reviewed-by: Casey Bodley <cbodley@redhat.com>

ceph-menv/.menvrc

@@ -0,0 +1,16 @@
+MENV_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}" )" && pwd)"
+
+export PATH=${MENV_ROOT}/bin:$PATH
+alias mset='source $MENV_ROOT/mset.sh'
+
+case "$TERM" in
+xterm-*color)
+    PS1='\[\033[$MRUN_PROMPT_COLOR;1m\]${MRUN_PROMPT}\[\033[00m\]'${PS1}
+    ;;
+*)
+    PS1='${MRUN_PROMPT}'${PS1}
+    ;;
+esac
+
+export MRUN_CEPH_ROOT=$HOME/ceph
+

ceph-menv/INSTALL

@@ -0,0 +1,19 @@
+ceph-menv
+
+Installation
+
+1. Build links
+
+# assuming ceph build directory is at $HOME/ceph/build
+$ cd ceph-menv
+$ ./build_links.sh
+
+A different ceph repository can be passed as the first argument to build_links.sh.
+
+2. Configure shell environment
+
+To your shell startup script (such as $HOME/.bashrc) add the following:
+
+source ~/ceph-menv/.menvrc
+
+(modify line appropriately if ceph-menv was installed at a different location)

ceph-menv/README

@@ -0,0 +1,21 @@
+ceph-menv
+
+Environment assistant for use in conjuction with multiple ceph vstart (or more accurately mstart) clusters. Eliminates the need to specify the cluster that is being used with each and every command. Can provide a shell prompt feedback about the currently used cluster.
+
+
+Usage:
+
+$ mset <cluster>
+
+
+For example:
+
+$ mstart.sh c1 -n
+$ mset c1
+[ c1 ] $ ceph -w
+
+
+To un-set cluster:
+
+$ mset
+

ceph-menv/build_links.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+DIR=`dirname $0`
+ROOT=$1
+
+[ "$ROOT" == "" ] && ROOT="$HOME/ceph"
+
+mkdir -p $DIR/bin
+
+echo $PWD
+for f in `ls $ROOT/build/bin`; do
+        echo $f
+        ln -sf ../mdo.sh $DIR/bin/$f
+done
+
+echo "MRUN_CEPH_ROOT=$ROOT" > $DIR/.menvroot

ceph-menv/mdo.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+cmd=`basename $0`
+MENV_ROOT=`dirname $0`/..
+
+if [ -f $MENV_ROOT/.menvroot ]; then
+    . $MENV_ROOT/.menvroot
+fi
+
+[ "$MRUN_CEPH_ROOT" == "" ] && MRUN_CEPH_ROOT=$HOME/ceph
+
+if [ "$MRUN_CLUSTER" == "" ]; then
+    ${MRUN_CEPH_ROOT}/build/bin/$cmd "$@"
+    exit $?
+fi
+
+${MRUN_CEPH_ROOT}/src/mrun $MRUN_CLUSTER $cmd "$@"

ceph-menv/mset.sh

@@ -0,0 +1,21 @@
+get_color() {
+        s=$1
+        sum=1   # just so that 'c1' isn't green that doesn't contrast with the rest of my prompt
+        for i in `seq 1 ${#s}`; do
+                c=${s:$((i-1)):1};
+                o=`printf '%d' "'$c"`
+                sum=$((sum+$o))
+        done
+        echo $sum
+}
+
+if [ "$1" == "" ]; then
+        unset MRUN_CLUSTER
+        unset MRUN_PROMPT
+else
+        export MRUN_CLUSTER=$1
+        export MRUN_PROMPT='['${MRUN_CLUSTER}'] '
+        col=$(get_color $1)
+        MRUN_PROMPT_COLOR=$((col%7+31))
+fi
+