Set SRD ratio tools (#121)

* set srd ratio

* fix error

* fix error

Author: LowEntropyBody

scripts/crust.sh

@@ -764,7 +764,8 @@ Crust tools usage:
     workload                                                   show workload information
     file-info {cid}                                            show all files information or one file details
     upgrade-image {chain|api|smanager|ipfs|c-gen|sworker}      upgrade one docker image
-    change-srd {number}                                        change sworker's srd capacity(GB), for example: 'crust tools change-srd 100', 'crust tools change-srd -50'
+    set-srd-ratio {ratio}                                      set SRD raito, default is 70%, range is 0% - 95%, for example 'set-srd-ratio 75'
+    change-srd {number}                                        change sworker's srd capacity(GB), for example: 'change-srd 100', 'change-srd -50'
     ipfs {...}                                                 ipfs command, for example 'ipfs pin ls', 'ipfs swarm peers'
 EOF
 }
@@ -839,6 +840,39 @@ change_srd()
 	curl -XPOST ''$base_url'/srd/change' -H 'backup: '$backup'' --data-raw '{"change" : '$1'}'
 }
 
+set_srd_ratio()
+{
+	if [ x"$1" == x"" ] || [[ ! $1 =~ ^[1-9][0-9]*$|^[-][1-9][0-9]*$|^0$ ]]; then 
+		log_err "The input of set srd ratio must be integer number"
+		tools_help
+		return 1
+	fi
+
+	if [ $1 -lt 0 ] || [ $1 -gt 95 ]; then
+		log_err "The range of set srd ratio is 0 ~ 95"
+		tools_help
+		return 1
+	fi
+
+	local a_or_b=`cat $basedir/etc/sWorker.ab`
+	check_docker_status crust-sworker-$a_or_b
+	if [ $? -ne 0 ]; then
+		log_info "Service crust sworker is not started or exited now"
+		return 0
+	fi
+
+	if [ ! -f "$builddir/sworker/sworker_config.json" ]; then
+		log_err "No sworker configuration file"
+		return 1
+	fi
+
+	local base_url=`cat $builddir/sworker/sworker_config.json | jq .base_url`
+	base_url=${base_url%?}
+	base_url=${base_url:1}
+
+	curl -XPOST ''$base_url'/srd/ratio' -H 'backup: '$backup'' --data-raw '{"ratio" : '$1'}'
+}
+
 workload()
 {
 	local a_or_b=`cat $basedir/etc/sWorker.ab`
@@ -931,6 +965,9 @@ tools()
 		change-srd)
 			change_srd $2
 			;;
+		set-srd-ratio)
+			set_srd_ratio $2
+			;;
 		rotate-keys)
 			rotate_keys
 			;;

scripts/utils.sh

@@ -17,7 +17,7 @@ function log_success()
 
 function log_err()
 {
-    echo_c 35 "$1"
+    echo_c 35 "ERROR: $1"
 }
 
 function upgrade_docker_image()