logSubscribe RPC Method

Parameters

filters

The filter criteria for the logs to receive results by account type. The currently supported filters are:

encoding

The encoding format for account data. It can be one of base58 (slow), base64, base64+zstd or jsonParsed

object

array

An object with the following fields:

commitment

string

The level of commitment required for the query. The options include:

finalized

string

The node will query the most recent block confirmed by the supermajority of the cluster as having reached maximum lockout, meaning the cluster has recognized this block as finalized

confirmed

string

The node will query the most recent block that has been voted on by the supermajority of the cluster

processed

string

The node will query its most recent block. Note that the block may not be complete

Returns

result

The result will be an RpcResponse JSON object with id equal to the subscription id (needed to unsubscribe)

Notification Format:

The notification will be an RpcResponse JSON object with value equal to

signature

The notification will be an RpcResponse JSON object with value equal to:

err

Error if transaction failed, null if transaction succeeded

logs

An array of log messages the transaction instructions output during execution, null if simulation failed before the transaction was able to execute (for example due to an invalid blockhash or signature verification failure)

Request

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const web3 = require("@solana/web3.js");
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(async () => {
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  const publicKey = new web3.PublicKey(
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    "E645TckHQnDcavVv92Etc6xSWQaq8zzPtPRGBheviRAk"
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  );
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  const solanaConnection = new web3.Connection("https://docs-demo.solana-mainnet.quiknode.pro/", {
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    wsEndpoint: "",
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  });
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  solanaConnection.onLogs(
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    publicKey,
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    (logs, context) => console.log("Updated account info: ", logs),
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    "confirmed"
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  );
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})();
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