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Notification emails merging and localization
Signed-off-by: Stepan Ermakov <sermakov@orionsoft.ru>
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...s/src/main/java/org/ovirt/engine/core/notifier/transport/smtp/LocalizedMessageHelper.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| package org.ovirt.engine.core.notifier.transport.smtp; | ||
|
|
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| import java.text.DateFormat; | ||
| import java.text.SimpleDateFormat; | ||
| import java.util.Date; | ||
| import java.util.Locale; | ||
| import java.util.Map; | ||
| import java.util.MissingResourceException; | ||
| import java.util.ResourceBundle; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
|
|
||
| import org.apache.commons.lang.StringUtils; | ||
| import org.ovirt.engine.core.common.AuditLogSeverity; | ||
| import org.ovirt.engine.core.notifier.filter.AuditLogEventType; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| /** | ||
| * A helper class designed to construct localized message parts in static structure | ||
| */ | ||
| public class LocalizedMessageHelper { | ||
| private static final Logger log = LoggerFactory.getLogger(LocalizedMessageHelper.class); | ||
| private static final Map<Locale, ResourceBundle> RESOURCES = new ConcurrentHashMap<>(); | ||
|
|
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| /** | ||
| * Constructs a formatted message body based on provided message body elements content.<br> | ||
| * If any of message body element is empty or missing, it will not appear in the formatted message body text | ||
| * @param messageBody | ||
| * the message body values for populate a formatted message body | ||
| * @param locale | ||
| * locale for the message content | ||
| * @return a formatted message body | ||
| */ | ||
| public static String prepareMessageBody(MessageBody messageBody, Locale locale) { | ||
| StringBuilder sb = new StringBuilder(); | ||
|
|
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| appendPlainMessage(sb, "smtp.message.body.plain.time", getLogTime(messageBody, locale), locale); | ||
| appendPlainMessage(sb, "smtp.message.body.plain.message", messageBody.getMessage(), locale); | ||
| appendPlainMessage(sb, "smtp.message.body.plain.severity", getSeverity(messageBody, locale), locale); | ||
|
|
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| appendPlainMessage(sb, "smtp.message.body.plain.user.info", messageBody.getUserInfo(), locale); | ||
| appendPlainMessage(sb, "smtp.message.body.plain.vm.info", messageBody.getVmInfo(), locale); | ||
| appendPlainMessage(sb, "smtp.message.body.plain.host.info", messageBody.getHostInfo(), locale); | ||
| appendPlainMessage(sb, "smtp.message.body.plain.template.info", messageBody.getTemplateInfo(), locale); | ||
| appendPlainMessage(sb, "smtp.message.body.plain.dc.info", messageBody.getDatacenterInfo(), locale); | ||
| appendPlainMessage(sb, "smtp.message.body.plain.storage.domain.info", messageBody.getStorageDomainInfo(), locale); | ||
|
|
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| return sb.toString(); | ||
| } | ||
|
|
||
| /** | ||
| * Construct a formatted message based on predefined template:<br> | ||
| * {@code "Issue Solved"/"Alert Notification" (host name), [message details]} | ||
| * @param type | ||
| * determines the prefix of the subject | ||
| * @param hostName | ||
| * the machine names associated with this event | ||
| * @param message | ||
| * the content of the message to convey | ||
| * @param locale | ||
| * locale for the message content | ||
| * @return a formatted message subject | ||
| */ | ||
| public static String prepareMessageSubject(AuditLogEventType type, String hostName, String message, Locale locale) { | ||
| String auditLogEventType = type.name(); | ||
| switch (type) { | ||
| case alertMessage: | ||
| auditLogEventType = getResourceString("smtp.message.audit.log.event.type.alert", locale, auditLogEventType); | ||
| break; | ||
| case resolveMessage: | ||
| auditLogEventType = getResourceString("smtp.message.audit.log.event.type.resolve", locale, auditLogEventType); | ||
| break; | ||
| } | ||
| return String.format("%s (%s), [%s]", auditLogEventType, hostName, message); | ||
|
|
||
| } | ||
|
|
||
| /** | ||
| * Constructs a formatted message body based on provided message body elements content in HTML format.<br> | ||
| * If any of message body element is empty or missing, it will not appear in the formatted message body text | ||
| * @param messageBody | ||
| * the message body values for populate a formatted message body | ||
| * @param locale | ||
| * locale for the message content | ||
| * @return a formatted HTML message body | ||
| */ | ||
| public static String prepareHTMLMessageBody(MessageBody messageBody, Locale locale) { | ||
| StringBuilder sb = new StringBuilder(); | ||
|
|
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| appendHtmlMessage(sb, "smtp.message.body.html.time", getLogTime(messageBody, locale), locale); | ||
| appendHtmlMessage(sb, "smtp.message.body.html.message", messageBody.getMessage(), locale); | ||
| appendHtmlMessage(sb, "smtp.message.body.html.severity", getSeverity(messageBody, locale), locale); | ||
|
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| appendHtmlMessage(sb, "smtp.message.body.html.user.info", messageBody.getUserInfo(), locale); | ||
| appendHtmlMessage(sb, "smtp.message.body.html.vm.info", messageBody.getVmInfo(), locale); | ||
| appendHtmlMessage(sb, "smtp.message.body.html.host.info", messageBody.getHostInfo(), locale); | ||
| appendHtmlMessage(sb, "smtp.message.body.html.template.info", messageBody.getTemplateInfo(), locale); | ||
| appendHtmlMessage(sb, "smtp.message.body.html.dc.info", messageBody.getDatacenterInfo(), locale); | ||
| appendHtmlMessage(sb, "smtp.message.body.html.storage.domain.info", messageBody.getStorageDomainInfo(), locale); | ||
|
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| return sb.toString(); | ||
| } | ||
|
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| private static String getLogTime(MessageBody messageBody, Locale locale) { | ||
| Date logTime = messageBody.getLogTime(); | ||
| if (logTime == null) { | ||
| return ""; | ||
| } | ||
| return SimpleDateFormat.getDateTimeInstance(DateFormat.DEFAULT, DateFormat.DEFAULT, locale).format(logTime); | ||
| } | ||
|
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| private static String getSeverity(MessageBody messageBody, Locale locale) { | ||
| AuditLogSeverity severity = messageBody.getSeverity(); | ||
| if (severity == null) { | ||
| return ""; | ||
| } | ||
| String auditLogSeverity = severity.name(); | ||
| switch (severity) { | ||
| case NORMAL: | ||
| auditLogSeverity = getResourceString("smtp.message.audit.log.severity.normal", locale, auditLogSeverity); | ||
| break; | ||
| case WARNING: | ||
| auditLogSeverity = getResourceString("smtp.message.audit.log.severity.warning", locale, auditLogSeverity); | ||
| break; | ||
| case ERROR: | ||
| auditLogSeverity = getResourceString("smtp.message.audit.log.severity.error", locale, auditLogSeverity); | ||
| break; | ||
| case ALERT: | ||
| auditLogSeverity = getResourceString("smtp.message.audit.log.severity.alert", locale, auditLogSeverity); | ||
| break; | ||
|
|
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| } | ||
| return auditLogSeverity; | ||
| } | ||
|
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| private static void appendPlainMessage(StringBuilder body, String messageId, String messageValue, Locale locale) { | ||
| appendMessage(body, messageId, messageValue, System.lineSeparator(), locale); | ||
| } | ||
| private static void appendHtmlMessage(StringBuilder body, String messageId, String messageValue, Locale locale) { | ||
| appendMessage(body, messageId, messageValue, "<br>", locale); | ||
| } | ||
| private static void appendMessage(StringBuilder body, String messageId, String messageValue, String messageSuffix, Locale locale) { | ||
| if (StringUtils.isNotEmpty(messageValue)) { | ||
| String message = getResourceString(messageId, locale, ""); | ||
| body.append(String.format(message, messageValue)) | ||
| .append(messageSuffix); | ||
| } | ||
| } | ||
|
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| private static String getResourceString(String id, Locale locale, String defaultValue) { | ||
| try { | ||
| return RESOURCES.computeIfAbsent(locale, lc -> ResourceBundle.getBundle("smtp-messages", lc)) | ||
| .getString(id); | ||
| } catch (MissingResourceException mre) { | ||
| log.debug("Failed to load resource string {}: {}", id, mre.getMessage(), mre); | ||
| return defaultValue; | ||
| } | ||
| } | ||
| } |
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