When channelId or name are null (which can happen in tests or partially initialized channels), passing null values to CloseableThreadContext.put() may cause issues. Consider adding null checks or using StringUtils.defaultString() to provide empty strings instead of null values.

Example:

try (CloseableThreadContext.Instance ctc = CloseableThreadContext
        .put("channelId", StringUtils.defaultString(channelId))
        .put("channelName", StringUtils.defaultString(name))
) {

If null is unacceptable (refer to Log4j docs), then the call to put should be omitted. Empty string does not seem semantically better than null. "fear" of nulls is foolish - equivalent to adding try-catch all over the place. Either null is valid or it is not.

When channel.getName() returns null (which can happen in tests or partially initialized channels), passing null values to CloseableThreadContext.put() may cause issues. Consider adding null checks or using StringUtils.defaultString() to provide empty strings instead of null values.

Example:

try (CloseableThreadContext.Instance ctc = CloseableThreadContext
        .put("channelId", StringUtils.defaultString(getChannelId()))
        .put("channelName", StringUtils.defaultString(channel.getName()))
) {

The setChannelId method doesn't check if attributes is null before calling put(). If setAttributes(null) was called previously, or if the attributes map becomes null through some other means, this will throw a NullPointerException. The setAttributes method ensures the map is never null, but adding a null check here would make this method more defensive.

Example:

public void setChannelId(String channelId) {
    if (this.attributes != null) {
        this.attributes.put("channelId", channelId);
    }
}

Attributes should never be null. If there's no way for it to be null, then this is bad advice.

The setChannelName method doesn't check if attributes is null before calling put(). If setAttributes(null) was called previously, or if the attributes map becomes null through some other means, this will throw a NullPointerException. The setAttributes method ensures the map is never null, but adding a null check here would make this method more defensive.

Example:

public void setChannelName(String channelName) {
    if (this.attributes != null) {
        this.attributes.put("channelName", channelName);
    }
}

Trailing whitespace on this line should be removed.

When channelId or name are null (which can happen in tests or partially initialized channels), passing null values to CloseableThreadContext.put() may cause issues. Consider adding null checks or using StringUtils.defaultString() to provide empty strings instead of null values.

Example:

try (CloseableThreadContext.Instance ctc = CloseableThreadContext
        .put("channelId", StringUtils.defaultString(channelId))
        .put("channelName", StringUtils.defaultString(name))
) {

Variable serializedPropertiesClass may be null at this access because of this assignment.

No changes were made to this line of code. If there's an issue, it's pre-existing and should be fixed in an unrelated PR.

This check is useless. connectorMessage cannot be null at this check, since it is guarded by ... != ....

Not changed - preexisting.

This check is useless. connectorMessage cannot be null at this check, since it is guarded by ... != ....

Not changed. Preexisting.