Stefanie Doll
2433d8d1fc
* Docs: Fixed keyring examples * Docs: Added Rx examples * [Docs] Added timeout to showcase unsubscribe method in ApiPromise * [Docs] Added timeout to showcase unsubscribe method in ApiPromise * [Docs] Added comments to read_storage example * [Docs] Renamed "transfer_dots' to a more generic 'make_transfer' since it's not only DOT's * [Docs] ApiRx examples for simple_connect, listen_to_blocks (incl. unsubscribe), listen_to_balance_change and read_storage * [Docs] changed back keyring import syntax to require * [Docs] Removed provider from read storage example * [Docs] ApiRx "make transfer" example * [Docs] ApiRx "system events" example * [Docs] ApiRx "transfer events" example * [Docs] Removed unused utility functions import * [Docs] ApiRx 'upgrade chain' example * [Docs] removed generated html files * [Docs] Ficed wrong Readme of listen to blocks example * [Docs added missing import] * [Docs] Removed unsubscribe() example from 'listen to blocks' * [Docs] Added Unsubscribe example for ApiPromise and ApiRx * [Docs] Added links to summary * [Docs] Removed duplicate info/comment from 04_unsubscribe * [Docs] Fixed wording * [Docs] Log actual transaction status in "make_transfer" * [Docs] Changed author name * [Docs] Log actual transaction status in "make_transfer" * [Docs] changed headline of make_transfer example README's * [Docs] changed status.value to status.asFinalised * [Docs] Removed auto-generated html * [Docs] Changed all occurances of status.value.toHex() to status.asFinalised.toHex() * [Docs] Remove call to nonce observable from signAndSend examples * [Docs] Use RxJs' zip() operator instead of 'await Promise.all()' * [Docs] Remove call to nonce observable from 'upgrade_chain' example * [Docs] Changed author * [Docs] Changed wording of balance change example * [Docs] smaller code-review fixes * [Docs] Fix Rx read_storage example * [Docs] use pairwise together with startWith in the Rx balance_change example * [Docs] Wording & little less code * [Docs] Added whitespace * [Docs] Use switchMap instead fo subscribe inside subscribe syntax * [Docs] Fixed import syntax for RxJs examples * [Docs] removed provider * [Docs] WIP read storage make-over * [Docs] update Rx read_storage * [Docs] Read storage example with piped switchMap() * [Docs] Turn null into observable * [Docs] Read storage example added 2nd version using tap() * [Docs] fixed name typo * [Docs] removed tap() example
55 lines
1.8 KiB
JavaScript
55 lines
1.8 KiB
JavaScript
// Import the API and some utility functions
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const { ApiRx } = require('@polkadot/api');
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// import the test keyring (already has dev keys for Alice, Bob, Charlie, Eve & Ferdie)
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const testKeyring = require('@polkadot/keyring/testing');
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// utility function for random values
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const { randomAsU8a } = require('@polkadot/util-crypto');
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// some constants we are using in this sample
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const ALICE = '5GoKvZWG5ZPYL1WUovuHW3zJBWBP5eT8CbqjdRY4Q6iMaDtZ';
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const AMOUNT = 10000;
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async function main () {
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// create an instance of our testign keyring
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// If you're using ES6 module imports instead of require, just change this line to:
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// const keyring = testKeyring();
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const keyring = testKeyring.default();
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// Create our API with a connection to the node
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const api = await ApiRx.create().toPromise();
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// find the actual keypair in the keyring
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const alicePair = keyring.getPair(ALICE);
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// create a new random recipient
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const recipient = keyring.addFromSeed(randomAsU8a(32)).address();
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console.log('Sending', AMOUNT, 'from', alicePair.address(), 'to', recipient);
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// get the nonce for the admin key
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// Create a extrinsic, transferring 12345 units to Bob.
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api.tx.balances
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// Do the transfer
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.transfer(recipient, AMOUNT)
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// Sign and send it
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.signAndSend(alicePair)
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// And subscribe to the actual status
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.subscribe(({ events = [], status, type }) => {
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// Log transfer events
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console.log('Transfer status:', type);
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// Log system events once the transfer is finalised
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if (type === 'Finalised') {
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console.log('Completed at block hash', status.asFinalised.toHex());
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console.log('Events:');
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events.forEach(({ phase, event: { data, method, section } }) => {
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console.log('\t', phase.toString(), `: ${section}.${method}`, data.toString());
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});
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}
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});
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}
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main().catch(console.error);
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