package com.cloudbees.sdk.commands.bg;
import com.cloudbees.api.ApplicationInfo;
import com.cloudbees.api.ApplicationStatusResponse;
import com.cloudbees.api.BeesClient;
import com.cloudbees.api.ConfigurationParametersResponse;
import com.cloudbees.api.config.ConfigParameters;
import com.cloudbees.api.config.ParameterMap;
import com.cloudbees.sdk.cli.BeesCommand;
import com.cloudbees.sdk.cli.CLICommand;
import com.cloudbees.sdk.utils.Helper;
import org.kohsuke.args4j.Option;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
@BeesCommand(group="Application", description = "Switch an application proxy alias using the Blue-Green process")
@CLICommand("app:bg:switch")
public class ApplicationBlueGreenSwitch extends ApplicationBlueGreenBase {
@Option(name = "-f", usage = "force switch without prompting", aliases = "--force")
private Boolean force;
public ApplicationBlueGreenSwitch() {
}
@Override
public int main() throws Exception {
BeesClient client = getBeesClient(BeesClient.class, getAppId());
List<ApplicationAlias> aliases = getAliases(client, getAppId());
if (aliases.isEmpty()) {
System.err.println("ERROR: Application not configured for Blue-Green deployment switch. Use the \"blue-green=APP_ID[ALIASES]\" parameter");
return 1;
}
if (force == null || !force.booleanValue()) {
if (!Helper.promptMatches("Are you sure you want to switch the application aliases: (y/n) ", "[yY].*")) {
return 0;
}
}
for (ApplicationAlias alias : aliases) {
Map<String, String> settings = new HashMap<String, String>();
settings.put("aliases", alias.getAliasString());
try {
ApplicationStatusResponse res = client.applicationProxyUpdate(alias.getAppId(), settings);
System.out.println("application proxy for " + alias.getAppId() + " : " + res.getStatus());
} catch (Exception e) {
System.err.println("ERROR: failed to update application proxy for " + alias.getAppId() + " : " + e.getMessage());
}
}
return 0;
}
protected List<ApplicationAlias> getAliases(BeesClient client, String appId) throws IOException {
List<ApplicationAlias> applicationAliasList = new ArrayList<ApplicationAlias>();
try {
ConfigurationParametersResponse res = client.configurationParameters(appId, "application");
if (res.getConfiguration() != null) {
ConfigParameters configParameters = ConfigParameters.parse(res.getConfiguration());
ParameterMap parameterMap = configParameters.getParameters();
String param = parameterMap.get("blue-green");
if (param != null) {
ApplicationAlias bgApp = new ApplicationAlias(getAccount(), param);
// Get the current alias if any
ApplicationInfo applicationInfo = client.applicationInfo(appId);
String aliases = applicationInfo.getSettings().get("aliases");
ApplicationAlias currentApp = new ApplicationAlias(getAccount(), appId, aliases);
// If the current app has the alias already, set the other app alias
if (currentApp.containAliases(bgApp.getAliases())) {
addApplicationAlias(applicationAliasList, bgApp);
// Check to see if the other app has aliases
ApplicationInfo applicationInfo2 = client.applicationInfo(bgApp.getAppId());
String aliases2 = applicationInfo2.getSettings().get("aliases");
// If it has aliases, let swap them to the current app
if (aliases2 != null) {
addApplicationAlias(applicationAliasList, currentApp.getAppId(), aliases2);
}
// If the current app does not have the alias, set them
} else {
addApplicationAlias(applicationAliasList, currentApp.getAppId(), bgApp.getAliases());
// if the current app has other aliases, set the new app with them
if (currentApp.hasAliases()) {
addApplicationAlias(applicationAliasList, bgApp.getAppId(), currentApp.getAliases());
}
}
}
}
} catch (Exception e) {
System.err.println("WARNING: Cannot determine Blue-Green settings: " + e.getMessage());
}
return applicationAliasList;
}
private void addApplicationAlias(List<ApplicationAlias> applicationAliasList, String appId, String alias) throws IOException {
ApplicationAlias applicationAlias = new ApplicationAlias(getAccount(), appId, alias);
addApplicationAlias(applicationAliasList, applicationAlias);
}
private void addApplicationAlias(List<ApplicationAlias> applicationAliasList, String appId, List<String> alias) throws IOException {
ApplicationAlias applicationAlias = new ApplicationAlias(getAccount(), appId, alias);
addApplicationAlias(applicationAliasList, applicationAlias);
}
private void addApplicationAlias(List<ApplicationAlias> applicationAliasList, ApplicationAlias alias) {
applicationAliasList.add(alias);
System.out.println(String.format("Setting alias [%s] for application: %s", alias.getAliasString(), alias.getAppId()));
}
}