change the access token to be cached

getNewAccessToken.sh

@@ -2,17 +2,21 @@
 #set -x
 
 mkdir -p temp
+ageInSec=$(($(date +%s) - $(date +%s -r "access_token.dat")))
 
-curl -s -X POST https://api.schwabapi.com/v1/oauth/token \
-  -H "Authorization: Basic $(<appCredentials.dat)" \
-  -H 'Content-Type: application/x-www-form-urlencoded' \
-  -d "grant_type=refresh_token&refresh_token=$(<refresh_token.dat)" > temp/accessTokenReqResp.$$.json
-jq -e -r .access_token temp/accessTokenReqResp.$$.json > access_token.dat
-if [[ $? -ne 0 ]]; then
-  curl -d "" -X POST "https://deadswitch.kawomi.com/api/v1?topic=trade.schwab.error.getNewAccessToken&secs=1&email=joe@kawomi.com"
-  throw "ERROR: GETTING THE ACCESS TOKEN FAILED! $(<temp/accessTokenReqResp.$$.json)" err
+#Cache the last token for 10 min.
+if [[ ${ageInSec} -gt 600 ]]; then
+  curl -s -X POST https://api.schwabapi.com/v1/oauth/token \
+    -H "Authorization: Basic $(<appCredentials.dat)" \
+    -H 'Content-Type: application/x-www-form-urlencoded' \
+    -d "grant_type=refresh_token&refresh_token=$(<refresh_token.dat)" > temp/accessTokenReqResp.$$.json
+  jq -e -r .access_token temp/accessTokenReqResp.$$.json > access_token.dat
+  if [[ $? -ne 0 ]]; then
+    curl -d "" -X POST "https://deadswitch.kawomi.com/api/v1?topic=trade.schwab.error.getNewAccessToken&secs=1&email=joe@kawomi.com"
+    throw "ERROR: GETTING THE ACCESS TOKEN FAILED! $(<temp/accessTokenReqResp.$$.json)" err
+  fi
 fi
-#echo Access Token: $(<access_token.dat)
+echo -n -e "$(<access_token.dat)"
 
 ## I found the refresh token to be empty after the network is unreachable, therefore I don't handle the refresh token here...
 ## I have not seen it change, but let's see if they give us a new one before expiry...