Example usage for org.apache.hadoop.security.token TokenIdentifier getUser

Introduction

In this page you can find the example usage for org.apache.hadoop.security.token TokenIdentifier getUser.

Prototype

public abstract UserGroupInformation getUser();

Source Link

Document

Get the Ugi with the username encoded in the token identifier

Usage

From source file:org.apache.storm.common.AbstractHadoopAutoCreds.java

License:Apache License

private void addTokensToUGI(Subject subject) {
    if (subject != null) {
        Set<Credentials> privateCredentials = subject.getPrivateCredentials(Credentials.class);
        if (privateCredentials != null) {
            for (Credentials cred : privateCredentials) {
                Collection<Token<? extends TokenIdentifier>> allTokens = cred.getAllTokens();
                if (allTokens != null) {
                    for (Token<? extends TokenIdentifier> token : allTokens) {
                        try {
                            if (token == null) {
                                LOG.debug("Ignoring null token");
                                continue;
                            }//w  w  w.  jav  a2 s.  co m

                            LOG.debug("Current user: {}", UserGroupInformation.getCurrentUser());
                            LOG.debug("Token from Credentials : {}", token);

                            TokenIdentifier tokenId = token.decodeIdentifier();
                            if (tokenId != null) {
                                LOG.debug("Token identifier : {}", tokenId);
                                LOG.debug("Username in token identifier : {}", tokenId.getUser());
                            }

                            UserGroupInformation.getCurrentUser().addToken(token);
                            LOG.info("Added delegation tokens to UGI.");
                        } catch (IOException e) {
                            LOG.error("Exception while trying to add tokens to ugi", e);
                        }
                    }
                }
            }
        }
    }
}

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