private String getYumRepository()

in software/database/src/main/java/org/apache/brooklyn/entity/database/postgresql/PostgreSqlSshDriver.java [190:235]
35 lines of code
13 McCabe index (conditional complexity)

    private String getYumRepository(String version, String majorMinorVersion, String shortVersion) {
        // postgres becomes available if you add the repos using an RPM such as
        // http://yum.postgresql.org/9.3/redhat/rhel-6-i386/pgdg-centos93-9.3-1.noarch.rpm
        // fedora, rhel, sl, and centos supported for RPM's

        OsDetails osDetails = getMachine().getMachineDetails().getOsDetails();
        String arch = osDetails.getArch();
        String osMajorVersion = osDetails.getVersion();
        String osName = osDetails.getName();

        log.debug("postgres detecting yum information for "+getEntity()+" at "+getMachine()+": "+osName+", "+osMajorVersion+", "+arch);

        if (osName==null) osName = ""; else osName = osName.toLowerCase();

        if (osName.equals("ubuntu")) return "echo skipping yum repo setup as this is not an rpm environment";

        if (osName.equals("rhel") || osName.contains("red hat")) osName = "redhat";
        else if (osName.equals("centos")) osName = "centos";
        else if (osName.equals("sl") || osName.startsWith("scientific")) osName = "sl";
        else if (osName.equals("fedora")) osName = "fedora";
        else {
            log.debug("insufficient OS family information '"+osName+"' for "+getMachine()+" when installing "+getEntity()+" (yum repos); treating as centos");
            osName = "centos";
        }

        if (Strings.isBlank(arch)) {
            log.warn("Insuffient architecture information '"+arch+"' for "+getMachine()+"when installing "+getEntity()+"; treating as x86_64");
            arch = "x86_64";
        }

        if (Strings.isBlank(osMajorVersion)) {
            if (osName.equals("fedora")) osMajorVersion = "20";
            else osMajorVersion = "7";
            log.warn("Insuffient OS version information '"+getMachine().getOsDetails().getVersion()+"' for "+getMachine()+"when installing "+getEntity()+" (yum repos); treating as "+osMajorVersion);
        } else {
            if (osMajorVersion.indexOf(".")>0) 
                osMajorVersion = osMajorVersion.substring(0, osMajorVersion.indexOf('.'));
        }

        return chainGroup(
                sudo(commandToDownloadUrlAs(
                        format("https://download.postgresql.org/pub/repos/yum/%s/redhat/rhel-%s-%s/pgdg-centos%s.noarch.rpm", shortVersion, osMajorVersion, arch, version),
                        "pgrepo.rpm")),
                sudo("rpm -Uvh pgrepo.rpm")
            );
    }