Example goal Snippets

Unless otherwise noted, it is assumed that the working directory begins at the top level of the go-algorand repo.

It is also assumed that the main README's installation instructions have been followed and make install run so that the goal executable has been rebuilt from the same source as this example and is available in the shell environment. You can run ls -l $(which goal) after your make install and look at the installation time as a sanity check.

Finally, all the goal commands assume that ${ALGORAND_DATA} has been set. See the first Q/A for how this is done.

Starting a Single Node Dev Network

Q: Having just completed a new build in go-algorand, how do I get a single node dev network up, with algos in an easily accessible wallet from goal?

A:

# set this to where you want to keep the network files (and data dirs will go beneath)
NETWORKS=~/networks

# create a networks directory if you don't already have it
mkdir -p ${NETWORKS}

# set this to "name" your network
NAME=niftynetwork

# assuming here that are currently working out of the root directory of the go-algorand repo
goal network create -n ${NAME} -r ${NETWORKS}/${NAME} -t ./test/testdata/nettemplates/OneNodeFuture.json

# after the next command and for the rest of the README, we assume that `${ALGORAND_DATA}` is set
export ALGORAND_DATA=${NETWORKS}/${NAME}/Primary
echo $ALGORAND_DATA

# start the network
goal node start

# see if it worked (run a few times, note block increasing)
goal node status
sleep 4  # assuming you're copy/pasting this entire block
goal node status
sleep 4
goal node status

# find the account with all the money
goal account list

# put it in a variable
ACCOUNT=`goal account list | awk '{print $2}'`
echo $ACCOUNT

# send some money from the account to itself
goal clerk send --to ${ACCOUNT} --from ${ACCOUNT} --amount 10

Creating Applications

Q: How do I use goal to create an app?

A:

Here's an example with the following assumptions:

• all the setup is as in the first question
• the approval program (which tests box functionality) has relative path cmd/goal/examples/boxes.teal
• the clear program has relative path cmd/goal/examples/clear.teal
• there are no local or global storage requirements

TEALDIR=cmd/goal/examples
echo $TEALDIR

# create the app and TAKE NOTE of its "app index"
goal app create --creator ${ACCOUNT} --approval-prog ${TEALDIR}/boxes.teal --clear-prog ${TEALDIR}/clear.teal

For the following questions, you'll need to use the app index. That will be shown in the last line printed. EG:

Attempting to create app (approval size 125, hash RKWO3VXBKQXF77PC6EHRLFXD4YTJYTJTGPTPWQ46YH5ESGPZ5JIA; clear size 3, hash IS4FW6ZCRMQRTDIINAVAQHD2GK6DXUNQHQ52IQGZEVPP4OEU56QA)
Issued transaction from account ECRQFXZ7P3PLNK6QLIEVX7AXU6NTVQZHFUSEXTXMBKKOA2NTIV4PCX7XNY, txid SZK3U7AARMPQSZUICZIGYRLC7UDXJCVPV34JCBN5LIBXMF635UKA (fee 1000)
Transaction SZK3U7AARMPQSZUICZIGYRLC7UDXJCVPV34JCBN5LIBXMF635UKA still pending as of round 12
Transaction SZK3U7AARMPQSZUICZIGYRLC7UDXJCVPV34JCBN5LIBXMF635UKA still pending as of round 13
Transaction SZK3U7AARMPQSZUICZIGYRLC7UDXJCVPV34JCBN5LIBXMF635UKA committed in round 14
Created app with app index 2

Funding App-Accounts

Q: How do I fund the app account so that it can satisfy its boxes min-balance requirement and allow for box creation?

A:

Assuming you followed the previous step, and that the app index is 2:

# store the app index for later usage
APPID=2
echo $APPID

# store the app's account address into a variable
APP_ACCOUNT=`goal app info --app-id ${APPID} | grep "Application account" | awk '{print $3}'`
echo $APP_ACCOUNT

# fund the app's account (here we're being very conservative and sending 10 algos)
goal clerk send --to ${APP_ACCOUNT} --from ${ACCOUNT} --amount 10000000

# verify the balance of the app's account
goal account balance --address ${APP_ACCOUNT}

Application Boxes in goal

Q: How do I use boxes in goal? In particular, I'd like to make a goal app call which:

• accesses a particular box for a particular app
• stores an ABI type as its contents

A:

Here's an example with the following assumptions:

• the caller's account is given by ${ACCOUNT} (see first answer)
• the program used is boxes.teal referenced above. In particular:
  • it routes to box subroutines using the app argument at index 0 as the method signifier
• the app id has been stored in ${APPID} (see the previous answer)
• the box referenced in the first non-create app-call has name greatBox
• another referenced box is named an_ABI_box
  • this second box is provided contents [2,3,5] of ABI-type (uint8,uint8,uint8)

# create a box with a simple non-ABI name. Note how the `--box` flag needs to be set so as to refer to the box being touched
goal app call --from $ACCOUNT --app-id ${APPID} --box "str:greatBox" --app-arg "str:create" --app-arg "str:greatBox"

# create another box
goal app call --from ${ACCOUNT} --app-id ${APPID} --box "str:an_ABI_box" --app-arg "str:create" --app-arg "str:an_ABI_box"

# set the contents to ABI type `(uint8,uint8,uint8)` with value `[2,3,5]`
goal app call --from ${ACCOUNT} --app-id ${APPID} --box "str:an_ABI_box" --app-arg "str:set" --app-arg "str:an_ABI_box"  --app-arg "abi:(uint8,uint8,uint8):[2,3,5]"

Q: How do I search for boxes in goal?

A:

Assuming you followed the previous step to create greatBox and an_ABI_box:

# get all boxes for a given app
goal app box list --app-id ${APPID}

# get the box details for a given box
goal app box info --app-id ${APPID} --name "str:an_ABI_box"