[jira] [Created] (CAMEL-13593) avoid “expected resource not found” warnings when using camel-mail in OSGi

["Freeman Fang (JIRA)" <ji...@apache.org>]

Freeman Fang created CAMEL-13593:
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             Summary: avoid “expected resource not found” warnings when using camel-mail in OSGi
                 Key: CAMEL-13593
                 URL: https://issues.apache.org/jira/browse/CAMEL-13593
             Project: Camel
          Issue Type: Improvement
            Reporter: Freeman Fang


In javax.mail API(1.6), it(javax.mail.Session) will use authenticator's classloader to load two default files
{code}
META-INF/javamail.default.address.map
META-INF/javamail.default.providers
{code}

Since camel-mail provider a DefaultAuthenticator, which means javax mail api will try to use camel-mail bundle classloader in OSGi to load above default files. Those files aren't available for camel-mail bundle classloader, so we see warning message as
{code}
 2019-04-25 12:42:09,806 | WARN | 23 - scheduler://foo | j.mail | 21 - com.sun.mail.javax.mail - 1.6.1 | expected resource not found: /META-INF/javamail.default.providers
2019-04-25 12:42:09,807 | WARN | 23 - scheduler://foo | j.mail | 21 - com.sun.mail.javax.mail - 1.6.1| expected resource not found: /META-INF/javamail.default.address.map
{code}

This warning message isn't harmful but annoying. The javax.mail.Session will always add default stuff by code if can't find the default configuration file
{code}
       if (providers.size() == 0) {
            logger.config("failed to load any providers, using defaults");
            // failed to load any providers, initialize with our defaults
            addProvider(new Provider(Provider.Type.STORE,
                        "imap", "com.sun.mail.imap.IMAPStore",
                        "Oracle", Version.version));
            addProvider(new Provider(Provider.Type.STORE,
                        "imaps", "com.sun.mail.imap.IMAPSSLStore",
                        "Oracle", Version.version));
            addProvider(new Provider(Provider.Type.STORE,
                        "pop3", "com.sun.mail.pop3.POP3Store",
                        "Oracle", Version.version));
            addProvider(new Provider(Provider.Type.STORE,
                        "pop3s", "com.sun.mail.pop3.POP3SSLStore",
                        "Oracle", Version.version));
            addProvider(new Provider(Provider.Type.TRANSPORT,
                        "smtp", "com.sun.mail.smtp.SMTPTransport",
                        "Oracle", Version.version));
            addProvider(new Provider(Provider.Type.TRANSPORT,
                        "smtps", "com.sun.mail.smtp.SMTPSSLTransport",
                        "Oracle", Version.version));
        }
       if (addressMap.isEmpty()) {
            logger.config("failed to load address map, using defaults");
            addressMap.put("rfc822", "smtp");
        }
{code}

It's better we can avoid such WARN message when using camel-mail in OSGi



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