add defaults() fn. add --print-config. config loader now fails on error

lib/utils/config.sh

@@ -48,8 +48,13 @@ parse_config () {
       return
     fi
 
-    #echo "${fn_name}_config () { ${_body}; }"
-    eval "${fn_name}_config () { ${_body}; }"
+    if ! eval "$_body" > /dev/null 2>&1; then
+      echo "Error parsing config section: $_name: $_body"
+      exit 1
+    fi
+
+    #echo "${fn_name}_config () { $_body; }"
+    eval "${fn_name}_config () { $_body; }"
   }
 
   for line in $(cat $1); do

lib/utils/helpers.sh

@@ -9,8 +9,6 @@ iso_date () {
 }
 
 in_array () {
-  local item=$1
-  local arr=$2
   echo " $2 " | grep -q " $1 "
 }
 
@@ -23,4 +21,8 @@ unique_id () {
   LC_ALL=C
   echo __u_$(cat /dev/urandom | tr -dc 'A-Za-z0-9' | head -c 10)
   LC_ALL=$RESTORE_LC_ALL
+}
+
+print_prefixed () {
+  printf "$2" | sed -e "s/^/$1/g"
 }

lib/utils/loader.sh

@@ -6,9 +6,10 @@ load_reporter_with_prefix () {
   local content
 
   content=$(sed \
-          -e 's/^[[:space:]]*\(init[ ]*()[ ]*{\)/'"$prefix"'\1/' \
+          -e 's/^[[:space:]]*\(defaults[ ]*()[ ]*{\)/'"$prefix"'\1/' \
+          -e 's/^[[:space:]]*\(start[ ]*()[ ]*{\)/'"$prefix"'\1/' \
           -e 's/^[[:space:]]*\(report[ ]*()[ ]*{\)/'"$prefix"'\1/' \
-          -e 's/^[[:space:]]*\(terminate[ ]*()[ ]*{\)/'"$prefix"'\1/' \
+          -e 's/^[[:space:]]*\(stop[ ]*()[ ]*{\)/'"$prefix"'\1/' \
           -e 's/^[[:space:]]*\(docs[ ]*()[ ]*{\)/'"$prefix"'\1/' $file)
 
   eval "$content"
@@ -21,9 +22,10 @@ load_metric_with_prefix () {
 
   # dash will error if this variable is defined as `local`
   content=$(sed \
-          -e 's/^[[:space:]]*\(init[ ]*()[ ]*{\)/'"$prefix"'\1/' \
+          -e 's/^[[:space:]]*\(defaults[ ]*()[ ]*{\)/'"$prefix"'\1/' \
+          -e 's/^[[:space:]]*\(start[ ]*()[ ]*{\)/'"$prefix"'\1/' \
           -e 's/^[[:space:]]*\(collect[ ]*()[ ]*{\)/'"$prefix"'\1/' \
-          -e 's/^[[:space:]]*\(terminate[ ]*()[ ]*{\)/'"$prefix"'\1/' \
+          -e 's/^[[:space:]]*\(stop[ ]*()[ ]*{\)/'"$prefix"'\1/' \
           -e 's/^[[:space:]]*\(docs[ ]*()[ ]*{\)/'"$prefix"'\1/' $file)
 
   eval "$content"