示例#1
0
def dom_rule_add(dom_element, options, rule_argv):
    # pylint: disable=too-many-branches
    """
    Commandline options: no options
    """
    # validate options
    if options.get("score") and options.get("score-attribute"):
        utils.err("can not specify both score and score-attribute")
    if options.get("score") and not utils.is_score(options["score"]):
        # preserving legacy behaviour
        print(
            "Warning: invalid score '%s', setting score-attribute=pingd instead"
            % options["score"])
        options["score-attribute"] = "pingd"
        options["score"] = None
    if options.get("role") and options["role"] not in ["master", "slave"]:
        utils.err("invalid role '%s', use 'master' or 'slave'" %
                  options["role"])
    if options.get("id"):
        id_valid, id_error = utils.validate_xml_id(options["id"], "rule id")
        if not id_valid:
            utils.err(id_error)
        if utils.does_id_exist(dom_element.ownerDocument, options["id"]):
            utils.err("id '%s' is already in use, please specify another one" %
                      options["id"])

    # parse rule
    if not rule_argv:
        utils.err("no rule expression was specified")
    try:
        dom_rule = CibBuilder().build(
            dom_element,
            RuleParser().parse(TokenPreprocessor().run(rule_argv)),
            options.get("id"),
        )
    except SyntaxError as e:
        utils.err("'%s' is not a valid rule expression: %s" %
                  (" ".join(rule_argv), e))
    except UnexpectedEndOfInput as e:
        utils.err(
            "'%s' is not a valid rule expression: unexpected end of rule" %
            " ".join(rule_argv))
    except (ParserException, CibBuilderException) as e:
        utils.err("'%s' is not a valid rule expression" % " ".join(rule_argv))

    # add options into rule xml
    if not options.get("score") and not options.get("score-attribute"):
        options["score"] = "INFINITY"
    for name, value in options.items():
        if name != "id" and value is not None:
            dom_rule.setAttribute(name, value)
    # score or score-attribute is required for the nested rules in order to have
    # valid CIB, pacemaker does not use the score of the nested rules
    for rule in dom_rule.getElementsByTagName("rule"):
        rule.setAttribute("score", "0")
    if dom_element.hasAttribute("score"):
        dom_element.removeAttribute("score")
    if dom_element.hasAttribute("node"):
        dom_element.removeAttribute("node")
    return dom_element
示例#2
0
def location_rule(argv):
    if len(argv) < 3:
        usage.constraint(["location", "rule"])
        sys.exit(1)

    res_name = argv.pop(0)
    resource_valid, resource_error, correct_id \
        = utils.validate_constraint_resource(utils.get_cib_dom(), res_name)
    if "--autocorrect" in utils.pcs_options and correct_id:
        res_name = correct_id
    elif not resource_valid:
        utils.err(resource_error)

    argv.pop(0) # pop "rule"

    options, rule_argv = rule_utils.parse_argv(argv, {"constraint-id": None, "resource-discovery": None,})

    # If resource-discovery is specified, we use it with the rsc_location
    # element not the rule
    if "resource-discovery" in options and options["resource-discovery"]:
        utils.checkAndUpgradeCIB(2,2,0)
        cib, constraints = getCurrentConstraints(utils.get_cib_dom())
        lc = cib.createElement("rsc_location")
        lc.setAttribute("resource-discovery", options.pop("resource-discovery"))
    else:
        cib, constraints = getCurrentConstraints(utils.get_cib_dom())
        lc = cib.createElement("rsc_location")


    constraints.appendChild(lc)
    if options.get("constraint-id"):
        id_valid, id_error = utils.validate_xml_id(
            options["constraint-id"], 'constraint id'
        )
        if not id_valid:
            utils.err(id_error)
        if utils.does_id_exist(cib, options["constraint-id"]):
            utils.err(
                "id '%s' is already in use, please specify another one"
                % options["constraint-id"]
            )
        lc.setAttribute("id", options["constraint-id"])
        del options["constraint-id"]
    else:
        lc.setAttribute("id", utils.find_unique_id(cib, "location-" + res_name))
    lc.setAttribute("rsc", res_name)

    rule_utils.dom_rule_add(lc, options, rule_argv)
    location_rule_check_duplicates(constraints, lc)
    utils.replace_cib_configuration(cib)
示例#3
0
def location_rule(argv):
    if len(argv) < 3:
        usage.constraint(["location", "rule"])
        sys.exit(1)

    res_name = argv.pop(0)
    resource_valid, resource_error, correct_id \
        = utils.validate_constraint_resource(utils.get_cib_dom(), res_name)
    if "--autocorrect" in utils.pcs_options and correct_id:
        res_name = correct_id
    elif not resource_valid:
        utils.err(resource_error)

    argv.pop(0) # pop "rule"

    options, rule_argv = rule_utils.parse_argv(argv, {"constraint-id": None, "resource-discovery": None,})

    # If resource-discovery is specified, we use it with the rsc_location
    # element not the rule
    if "resource-discovery" in options and options["resource-discovery"]:
        utils.checkAndUpgradeCIB(2,2,0)
        cib, constraints = getCurrentConstraints(utils.get_cib_dom())
        lc = cib.createElement("rsc_location")
        lc.setAttribute("resource-discovery", options.pop("resource-discovery"))
    else:
        cib, constraints = getCurrentConstraints(utils.get_cib_dom())
        lc = cib.createElement("rsc_location")


    constraints.appendChild(lc)
    if options.get("constraint-id"):
        id_valid, id_error = utils.validate_xml_id(
            options["constraint-id"], 'constraint id'
        )
        if not id_valid:
            utils.err(id_error)
        if utils.does_id_exist(cib, options["constraint-id"]):
            utils.err(
                "id '%s' is already in use, please specify another one"
                % options["constraint-id"]
            )
        lc.setAttribute("id", options["constraint-id"])
        del options["constraint-id"]
    else:
        lc.setAttribute("id", utils.find_unique_id(cib, "location-" + res_name))
    lc.setAttribute("rsc", res_name)

    rule_utils.dom_rule_add(lc, options, rule_argv)
    location_rule_check_duplicates(constraints, lc)
    utils.replace_cib_configuration(cib)
示例#4
0
def location_add(lib, argv, modifiers):
    """
    Options:
      * --force - allow unknown options, allow constraint for any resource type
      * -f - CIB file
    """
    del lib
    modifiers.ensure_only_supported("--force", "-f")
    if len(argv) < 4:
        raise CmdLineInputError()

    constraint_id = argv.pop(0)
    rsc_type, rsc_value = parse_args.parse_typed_arg(
        argv.pop(0), [RESOURCE_TYPE_RESOURCE, RESOURCE_TYPE_REGEXP],
        RESOURCE_TYPE_RESOURCE)
    node = argv.pop(0)
    score = argv.pop(0)
    options = []
    # For now we only allow setting resource-discovery
    if argv:
        for arg in argv:
            if '=' in arg:
                options.append(arg.split('=', 1))
            else:
                raise CmdLineInputError(f"bad option '{arg}'")
            if (options[-1][0] != "resource-discovery"
                    and not modifiers.get("--force")):
                utils.err("bad option '%s', use --force to override" %
                          options[-1][0])

    id_valid, id_error = utils.validate_xml_id(constraint_id, 'constraint id')
    if not id_valid:
        utils.err(id_error)

    if not utils.is_score(score):
        utils.err("invalid score '%s', use integer or INFINITY or -INFINITY" %
                  score)

    required_version = None
    if [x for x in options if x[0] == "resource-discovery"]:
        required_version = 2, 2, 0
    if rsc_type == RESOURCE_TYPE_REGEXP:
        required_version = 2, 6, 0

    if required_version:
        dom = utils.cluster_upgrade_to_version(required_version)
    else:
        dom = utils.get_cib_dom()

    if rsc_type == RESOURCE_TYPE_RESOURCE:
        rsc_valid, rsc_error, dummy_correct_id = (
            utils.validate_constraint_resource(dom, rsc_value))
        if not rsc_valid:
            utils.err(rsc_error)

    # Verify that specified node exists in the cluster
    if not (modifiers.is_specified("-f") or modifiers.get("--force")):
        lib_env = utils.get_lib_env()
        existing_nodes = get_existing_nodes_names(
            corosync_conf=lib_env.get_corosync_conf(),
            cib=lib_env.get_cib(),
        )
        if node not in existing_nodes:
            raise error(f"Node '{node}' does not seem to be in the cluster"
                        ", use --force to override")
    else:
        warn(LOCATION_NODE_VALIDATION_SKIP_MSG)

    # Verify current constraint doesn't already exist
    # If it does we replace it with the new constraint
    dummy_dom, constraintsElement = getCurrentConstraints(dom)
    elementsToRemove = []
    # If the id matches, or the rsc & node match, then we replace/remove
    for rsc_loc in constraintsElement.getElementsByTagName('rsc_location'):
        # pylint: disable=too-many-boolean-expressions
        if (rsc_loc.getAttribute("id") == constraint_id
                or (rsc_loc.getAttribute("node") == node and
                    ((RESOURCE_TYPE_RESOURCE == rsc_type
                      and rsc_loc.getAttribute("rsc") == rsc_value) or
                     (RESOURCE_TYPE_REGEXP == rsc_type
                      and rsc_loc.getAttribute("rsc-pattern") == rsc_value)))):
            elementsToRemove.append(rsc_loc)
    for etr in elementsToRemove:
        constraintsElement.removeChild(etr)

    element = dom.createElement("rsc_location")
    element.setAttribute("id", constraint_id)
    if rsc_type == RESOURCE_TYPE_RESOURCE:
        element.setAttribute("rsc", rsc_value)
    elif rsc_type == RESOURCE_TYPE_REGEXP:
        element.setAttribute("rsc-pattern", rsc_value)
    element.setAttribute("node", node)
    element.setAttribute("score", score)
    for option in options:
        element.setAttribute(option[0], option[1])
    constraintsElement.appendChild(element)

    utils.replace_cib_configuration(dom)
示例#5
0
def order_add(argv, modifiers):
    """
    Commandline options:
      * -f - CIB file
      * --force - allow constraint for any resource, allow duplicate constraints
    """
    if len(argv) < 2:
        raise CmdLineInputError()

    resource1 = argv.pop(0)
    resource2 = argv.pop(0)

    cib_dom = utils.get_cib_dom()
    resource_valid, resource_error, dummy_correct_id \
        = utils.validate_constraint_resource(cib_dom, resource1)
    if not resource_valid:
        utils.err(resource_error)
    resource_valid, resource_error, dummy_correct_id \
        = utils.validate_constraint_resource(cib_dom, resource2)
    if not resource_valid:
        utils.err(resource_error)

    order_options = []
    id_specified = False
    sym = None
    for arg in argv:
        if arg == "symmetrical":
            sym = "true"
        elif arg == "nonsymmetrical":
            sym = "false"
        elif "=" in arg:
            name, value = arg.split("=", 1)
            if name == "id":
                id_valid, id_error = utils.validate_xml_id(
                    value, 'constraint id')
                if not id_valid:
                    utils.err(id_error)
                if utils.does_id_exist(cib_dom, value):
                    utils.err(
                        "id '%s' is already in use, please specify another one"
                        % value)
                id_specified = True
                order_options.append((name, value))
            elif name == "symmetrical":
                if value.lower() in OPTIONS_SYMMETRICAL:
                    sym = value.lower()
                else:
                    utils.err(
                        "invalid symmetrical value '%s', allowed values are: %s"
                        % (value, ", ".join(OPTIONS_SYMMETRICAL)))
            else:
                order_options.append((name, value))
    if sym:
        order_options.append(("symmetrical", sym))

    options = ""
    if order_options:
        options = " (Options: %s)" % " ".join([
            "%s=%s" % (name, value)
            for name, value in order_options if name not in ("kind", "score")
        ])

    scorekind = "kind: Mandatory"
    id_suffix = "mandatory"
    for opt in order_options:
        if opt[0] == "score":
            scorekind = "score: " + opt[1]
            id_suffix = opt[1]
            break
        if opt[0] == "kind":
            scorekind = "kind: " + opt[1]
            id_suffix = opt[1]
            break

    if not id_specified:
        order_id = "order-" + resource1 + "-" + resource2 + "-" + id_suffix
        order_id = utils.find_unique_id(cib_dom, order_id)
        order_options.append(("id", order_id))

    (dom, constraintsElement) = getCurrentConstraints()
    element = dom.createElement("rsc_order")
    element.setAttribute("first", resource1)
    element.setAttribute("then", resource2)
    for order_opt in order_options:
        element.setAttribute(order_opt[0], order_opt[1])
    constraintsElement.appendChild(element)
    if not modifiers.get("--force"):
        duplicates = order_find_duplicates(constraintsElement, element)
        if duplicates:
            utils.err(
                "duplicate constraint already exists, use --force to override\n"
                + "\n".join([
                    "  " + constraint_order.console_report.constraint_plain(
                        {"options": dict(dup.attributes.items())}, True)
                    for dup in duplicates
                ]))
    print("Adding " + resource1 + " " + resource2 + " (" + scorekind + ")" +
          options)

    utils.replace_cib_configuration(dom)
示例#6
0
def colocation_add(lib, argv, modifiers):
    """
    Options:
      * -f - CIB file
      * --force - allow constraint on any resource, allow duplicate constraints
    """
    del lib
    modifiers.ensure_only_supported("-f", "--force")
    if len(argv) < 3:
        raise CmdLineInputError()

    role1 = ""
    role2 = ""

    if argv[2] == "with":
        role1 = argv.pop(0).lower().capitalize()
        resource1 = argv.pop(0)
    elif argv[1] == "with":
        resource1 = argv.pop(0)
    else:
        raise CmdLineInputError()

    argv.pop(0)  # Pop 'with'

    if not argv:
        raise CmdLineInputError()
    elif len(argv) == 1:
        resource2 = argv.pop(0)
    else:
        if utils.is_score_or_opt(argv[1]):
            resource2 = argv.pop(0)
        else:
            role2 = argv.pop(0).lower().capitalize()
            resource2 = argv.pop(0)

    score, nv_pairs = parse_score_options(argv)

    cib_dom = utils.get_cib_dom()
    resource_valid, resource_error, dummy_correct_id \
        = utils.validate_constraint_resource(cib_dom, resource1)
    if not resource_valid:
        utils.err(resource_error)
    resource_valid, resource_error, dummy_correct_id \
        = utils.validate_constraint_resource(cib_dom, resource2)
    if not resource_valid:
        utils.err(resource_error)

    id_in_nvpairs = None
    for name, value in nv_pairs:
        if name == "id":
            id_valid, id_error = utils.validate_xml_id(value, 'constraint id')
            if not id_valid:
                utils.err(id_error)
            if utils.does_id_exist(cib_dom, value):
                utils.err(
                    "id '%s' is already in use, please specify another one" %
                    value)
            id_in_nvpairs = True
    if not id_in_nvpairs:
        nv_pairs.append(
            ("id",
             utils.find_unique_id(
                 cib_dom,
                 "colocation-%s-%s-%s" % (resource1, resource2, score))))

    (dom, constraintsElement) = getCurrentConstraints(cib_dom)

    # If one role is specified, the other should default to "started"
    if role1 != "" and role2 == "":
        role2 = DEFAULT_ROLE
    if role2 != "" and role1 == "":
        role1 = DEFAULT_ROLE
    element = dom.createElement("rsc_colocation")
    element.setAttribute("rsc", resource1)
    element.setAttribute("with-rsc", resource2)
    element.setAttribute("score", score)
    if role1 != "":
        element.setAttribute("rsc-role", role1)
    if role2 != "":
        element.setAttribute("with-rsc-role", role2)
    for nv_pair in nv_pairs:
        element.setAttribute(nv_pair[0], nv_pair[1])
    if not modifiers.get("--force"):
        duplicates = colocation_find_duplicates(constraintsElement, element)
        if duplicates:
            utils.err(
                "duplicate constraint already exists, use --force to override\n"
                + "\n".join([
                    "  " +
                    constraint_colocation.console_report.constraint_plain(
                        {"options": dict(dup.attributes.items())}, True)
                    for dup in duplicates
                ]))
    constraintsElement.appendChild(element)
    utils.replace_cib_configuration(dom)
示例#7
0
def location_add(argv,rm=False):
    if len(argv) < 4 and (rm == False or len(argv) < 1):
        usage.constraint()
        sys.exit(1)

    constraint_id = argv.pop(0)

    # If we're removing, we only care about the id
    if (rm == True):
        resource_name = ""
        node = ""
        score = ""
    else:
        id_valid, id_error = utils.validate_xml_id(constraint_id, 'constraint id')
        if not id_valid:
            utils.err(id_error)
        resource_name = argv.pop(0)
        node = argv.pop(0)
        score = argv.pop(0)
        options = []
        # For now we only allow setting resource-discovery
        if len(argv) > 0:
            for arg in argv:
                if '=' in arg:
                    options.append(arg.split('=',1))
                else:
                    print("Error: bad option '%s'" % arg)
                    usage.constraint(["location add"])
                    sys.exit(1)
                if options[-1][0] != "resource-discovery" and "--force" not in utils.pcs_options:
                    utils.err("bad option '%s', use --force to override" % options[-1][0])


        resource_valid, resource_error, correct_id \
            = utils.validate_constraint_resource(
                utils.get_cib_dom(), resource_name
            )
        if "--autocorrect" in utils.pcs_options and correct_id:
            resource_name = correct_id
        elif not resource_valid:
            utils.err(resource_error)
        if not utils.is_score(score):
            utils.err("invalid score '%s', use integer or INFINITY or -INFINITY" % score)

    # Verify current constraint doesn't already exist
    # If it does we replace it with the new constraint
    (dom,constraintsElement) = getCurrentConstraints()
    elementsToRemove = []

    # If the id matches, or the rsc & node match, then we replace/remove
    for rsc_loc in constraintsElement.getElementsByTagName('rsc_location'):
        if (constraint_id == rsc_loc.getAttribute("id")) or \
                (rsc_loc.getAttribute("rsc") == resource_name and \
                rsc_loc.getAttribute("node") == node and not rm):
            elementsToRemove.append(rsc_loc)

    for etr in elementsToRemove:
        constraintsElement.removeChild(etr)

    if (rm == True and len(elementsToRemove) == 0):
        utils.err("resource location id: " + constraint_id + " not found.")

    if (not rm):
        element = dom.createElement("rsc_location")
        element.setAttribute("id",constraint_id)
        element.setAttribute("rsc",resource_name)
        element.setAttribute("node",node)
        element.setAttribute("score",score)
        for option in options:
            element.setAttribute(option[0], option[1])
        constraintsElement.appendChild(element)

    utils.replace_cib_configuration(dom)
示例#8
0
def location_rule(argv):
    if len(argv) < 3:
        usage.constraint(["location", "rule"])
        sys.exit(1)

    rsc_type, rsc_value = parse_args.parse_typed_arg(
        argv.pop(0),
        [RESOURCE_TYPE_RESOURCE, RESOURCE_TYPE_REGEXP],
        RESOURCE_TYPE_RESOURCE
    )
    argv.pop(0) # pop "rule"
    options, rule_argv = rule_utils.parse_argv(
        argv,
        {
            "constraint-id": None,
            "resource-discovery": None,
        }
    )
    resource_discovery = (
        "resource-discovery" in options
        and
        options["resource-discovery"]
    )

    required_version = None
    if resource_discovery:
        required_version = 2, 2, 0
    if rsc_type == RESOURCE_TYPE_REGEXP:
        required_version = 2, 6, 0

    if required_version:
        dom = utils.cluster_upgrade_to_version(required_version)
    else:
        dom = utils.get_cib_dom()

    if rsc_type == RESOURCE_TYPE_RESOURCE:
        rsc_valid, rsc_error, correct_id = utils.validate_constraint_resource(
            dom, rsc_value
        )
        if "--autocorrect" in utils.pcs_options and correct_id:
            rsc_value = correct_id
        elif not rsc_valid:
            utils.err(rsc_error)

    cib, constraints = getCurrentConstraints(dom)
    lc = cib.createElement("rsc_location")

    # If resource-discovery is specified, we use it with the rsc_location
    # element not the rule
    if resource_discovery:
        lc.setAttribute("resource-discovery", options.pop("resource-discovery"))

    constraints.appendChild(lc)
    if options.get("constraint-id"):
        id_valid, id_error = utils.validate_xml_id(
            options["constraint-id"], 'constraint id'
        )
        if not id_valid:
            utils.err(id_error)
        if utils.does_id_exist(dom, options["constraint-id"]):
            utils.err(
                "id '%s' is already in use, please specify another one"
                % options["constraint-id"]
            )
        lc.setAttribute("id", options["constraint-id"])
        del options["constraint-id"]
    else:
        lc.setAttribute(
            "id",
            utils.find_unique_id(dom, sanitize_id("location-" + rsc_value))
        )
    if rsc_type == RESOURCE_TYPE_RESOURCE:
        lc.setAttribute("rsc", rsc_value)
    elif rsc_type == RESOURCE_TYPE_REGEXP:
        lc.setAttribute("rsc-pattern", rsc_value)

    rule_utils.dom_rule_add(lc, options, rule_argv)
    location_rule_check_duplicates(constraints, lc)
    utils.replace_cib_configuration(cib)
示例#9
0
def location_add(argv, rm=False):
    if rm:
        location_remove(argv)
        return

    if len(argv) < 4:
        usage.constraint(["location add"])
        sys.exit(1)

    constraint_id = argv.pop(0)
    rsc_type, rsc_value = parse_args.parse_typed_arg(
        argv.pop(0), [RESOURCE_TYPE_RESOURCE, RESOURCE_TYPE_REGEXP],
        RESOURCE_TYPE_RESOURCE)
    node = argv.pop(0)
    score = argv.pop(0)
    options = []
    # For now we only allow setting resource-discovery
    if len(argv) > 0:
        for arg in argv:
            if '=' in arg:
                options.append(arg.split('=', 1))
            else:
                print("Error: bad option '%s'" % arg)
                usage.constraint(["location add"])
                sys.exit(1)
            if options[-1][
                    0] != "resource-discovery" and "--force" not in utils.pcs_options:
                utils.err("bad option '%s', use --force to override" %
                          options[-1][0])

    id_valid, id_error = utils.validate_xml_id(constraint_id, 'constraint id')
    if not id_valid:
        utils.err(id_error)

    if not utils.is_score(score):
        utils.err("invalid score '%s', use integer or INFINITY or -INFINITY" %
                  score)

    required_version = None
    if [x for x in options if x[0] == "resource-discovery"]:
        required_version = 2, 2, 0
    if rsc_type == RESOURCE_TYPE_REGEXP:
        required_version = 2, 6, 0

    if required_version:
        dom = utils.cluster_upgrade_to_version(required_version)
    else:
        dom = utils.get_cib_dom()

    if rsc_type == RESOURCE_TYPE_RESOURCE:
        rsc_valid, rsc_error, correct_id = utils.validate_constraint_resource(
            dom, rsc_value)
        if "--autocorrect" in utils.pcs_options and correct_id:
            rsc_value = correct_id
        elif not rsc_valid:
            utils.err(rsc_error)

    # Verify current constraint doesn't already exist
    # If it does we replace it with the new constraint
    dummy_dom, constraintsElement = getCurrentConstraints(dom)
    elementsToRemove = []
    # If the id matches, or the rsc & node match, then we replace/remove
    for rsc_loc in constraintsElement.getElementsByTagName('rsc_location'):
        if (rsc_loc.getAttribute("id") == constraint_id
                or (rsc_loc.getAttribute("node") == node and
                    ((RESOURCE_TYPE_RESOURCE == rsc_type
                      and rsc_loc.getAttribute("rsc") == rsc_value) or
                     (RESOURCE_TYPE_REGEXP == rsc_type
                      and rsc_loc.getAttribute("rsc-pattern") == rsc_value)))):
            elementsToRemove.append(rsc_loc)
    for etr in elementsToRemove:
        constraintsElement.removeChild(etr)

    element = dom.createElement("rsc_location")
    element.setAttribute("id", constraint_id)
    if rsc_type == RESOURCE_TYPE_RESOURCE:
        element.setAttribute("rsc", rsc_value)
    elif rsc_type == RESOURCE_TYPE_REGEXP:
        element.setAttribute("rsc-pattern", rsc_value)
    element.setAttribute("node", node)
    element.setAttribute("score", score)
    for option in options:
        element.setAttribute(option[0], option[1])
    constraintsElement.appendChild(element)

    utils.replace_cib_configuration(dom)
示例#10
0
def colocation_add(lib, argv, modifiers):
    """
    Options:
      * -f - CIB file
      * --force - allow constraint on any resource, allow duplicate constraints
    """
    def _parse_score_options(argv):
        # When passed an array of arguments if the first argument doesn't have
        # an '=' then it's the score, otherwise they're all arguments. Return a
        # tuple with the score and array of name,value pairs
        """
        Commandline options: no options
        """
        if not argv:
            return SCORE_INFINITY, []
        score = SCORE_INFINITY if "=" in argv[0] else argv.pop(0)
        # create a list of 2-tuples (name, value)
        arg_array = [
            parse_args.split_option(arg, allow_empty_value=False)
            for arg in argv
        ]
        return score, arg_array

    def _validate_and_prepare_role(role):
        role_cleaned = role.lower().capitalize()
        if role_cleaned not in RESOURCE_ROLES:
            utils.err(
                "invalid role value '{0}', allowed values are: '{1}'".format(
                    role, "', '".join(RESOURCE_ROLES)))
        return role_cleaned

    del lib
    modifiers.ensure_only_supported("-f", "--force")
    if len(argv) < 3:
        raise CmdLineInputError()

    role1 = ""
    role2 = ""

    if argv[2] == "with":
        role1 = _validate_and_prepare_role(argv.pop(0))
        resource1 = argv.pop(0)
    elif argv[1] == "with":
        resource1 = argv.pop(0)
    else:
        raise CmdLineInputError()

    if argv.pop(0) != "with":
        raise CmdLineInputError()
    if "with" in argv:
        raise CmdLineInputError(
            message="Multiple 'with's cannot be specified.",
            hint=(
                "Use the 'pcs constraint colocation set' command if you want "
                "to create a constraint for more than two resources."),
            show_both_usage_and_message=True)

    if not argv:
        raise CmdLineInputError()
    if len(argv) == 1:
        resource2 = argv.pop(0)
    else:
        if utils.is_score_or_opt(argv[1]):
            resource2 = argv.pop(0)
        else:
            role2 = _validate_and_prepare_role(argv.pop(0))
            resource2 = argv.pop(0)

    score, nv_pairs = _parse_score_options(argv)

    cib_dom = utils.get_cib_dom()
    _validate_constraint_resource(cib_dom, resource1)
    _validate_constraint_resource(cib_dom, resource2)

    id_in_nvpairs = None
    for name, value in nv_pairs:
        if name == "id":
            id_valid, id_error = utils.validate_xml_id(value, 'constraint id')
            if not id_valid:
                utils.err(id_error)
            if utils.does_id_exist(cib_dom, value):
                utils.err(
                    "id '%s' is already in use, please specify another one" %
                    value)
            id_in_nvpairs = True
    if not id_in_nvpairs:
        nv_pairs.append(
            ("id",
             utils.find_unique_id(
                 cib_dom,
                 "colocation-%s-%s-%s" % (resource1, resource2, score))))

    (dom, constraintsElement) = getCurrentConstraints(cib_dom)

    # If one role is specified, the other should default to "started"
    if role1 != "" and role2 == "":
        role2 = DEFAULT_ROLE
    if role2 != "" and role1 == "":
        role1 = DEFAULT_ROLE
    element = dom.createElement("rsc_colocation")
    element.setAttribute("rsc", resource1)
    element.setAttribute("with-rsc", resource2)
    element.setAttribute("score", score)
    if role1 != "":
        element.setAttribute("rsc-role", role1)
    if role2 != "":
        element.setAttribute("with-rsc-role", role2)
    for nv_pair in nv_pairs:
        element.setAttribute(nv_pair[0], nv_pair[1])
    if not modifiers.get("--force"):
        duplicates = colocation_find_duplicates(constraintsElement, element)
        if duplicates:
            utils.err(
                "duplicate constraint already exists, use --force to override\n"
                + "\n".join([
                    "  " +
                    constraint_colocation.console_report.constraint_plain(
                        {"options": dict(dup.attributes.items())}, True)
                    for dup in duplicates
                ]))
    constraintsElement.appendChild(element)
    utils.replace_cib_configuration(dom)
示例#11
0
def location_add(argv,rm=False):
    if len(argv) < 4 and (rm == False or len(argv) < 1):
        usage.constraint()
        sys.exit(1)

    constraint_id = argv.pop(0)

    # If we're removing, we only care about the id
    if (rm == True):
        resource_name = ""
        node = ""
        score = ""
    else:
        id_valid, id_error = utils.validate_xml_id(constraint_id, 'constraint id')
        if not id_valid:
            utils.err(id_error)
        resource_name = argv.pop(0)
        node = argv.pop(0)
        score = argv.pop(0)
        options = []
        # For now we only allow setting resource-discovery
        if len(argv) > 0:
            for arg in argv:
                if '=' in arg:
                    options.append(arg.split('=',1))
                else:
                    print("Error: bad option '%s'" % arg)
                    usage.constraint(["location add"])
                    sys.exit(1)
                if options[-1][0] != "resource-discovery" and "--force" not in utils.pcs_options:
                    utils.err("bad option '%s', use --force to override" % options[-1][0])


        resource_valid, resource_error, correct_id \
            = utils.validate_constraint_resource(
                utils.get_cib_dom(), resource_name
            )
        if "--autocorrect" in utils.pcs_options and correct_id:
            resource_name = correct_id
        elif not resource_valid:
            utils.err(resource_error)
        if not utils.is_score(score):
            utils.err("invalid score '%s', use integer or INFINITY or -INFINITY" % score)

    # Verify current constraint doesn't already exist
    # If it does we replace it with the new constraint
    (dom,constraintsElement) = getCurrentConstraints()
    elementsToRemove = []

    # If the id matches, or the rsc & node match, then we replace/remove
    for rsc_loc in constraintsElement.getElementsByTagName('rsc_location'):
        if (constraint_id == rsc_loc.getAttribute("id")) or \
                (rsc_loc.getAttribute("rsc") == resource_name and \
                rsc_loc.getAttribute("node") == node and not rm):
            elementsToRemove.append(rsc_loc)

    for etr in elementsToRemove:
        constraintsElement.removeChild(etr)

    if (rm == True and len(elementsToRemove) == 0):
        utils.err("resource location id: " + constraint_id + " not found.")

    if (not rm):
        element = dom.createElement("rsc_location")
        element.setAttribute("id",constraint_id)
        element.setAttribute("rsc",resource_name)
        element.setAttribute("node",node)
        element.setAttribute("score",score)
        for option in options:
            element.setAttribute(option[0], option[1])
        constraintsElement.appendChild(element)

    utils.replace_cib_configuration(dom)
示例#12
0
def order_set(argv):
    setoptions = []
    for i in range(len(argv)):
        if argv[i] == "setoptions":
            setoptions = argv[i+1:]
            argv[i:] = []
            break

    argv.insert(0, "set")
    resource_sets = set_args_into_array(argv)
    if not check_empty_resource_sets(resource_sets):
        usage.constraint(["order set"])
        sys.exit(1)
    cib, constraints = getCurrentConstraints(utils.get_cib_dom())

    attributes = []
    id_specified = False
    for opt in setoptions:
        if "=" not in opt:
            utils.err("missing value of '%s' option" % opt)
        name, value = opt.split("=", 1)
        if name == "id":
            id_valid, id_error = utils.validate_xml_id(value, 'constraint id')
            if not id_valid:
                utils.err(id_error)
            if utils.does_id_exist(cib, value):
                utils.err(
                    "id '%s' is already in use, please specify another one"
                    % value
                )
            id_specified = True
            attributes.append((name, value))
        elif name == "kind":
            normalized_value = value.lower().capitalize()
            if normalized_value not in OPTIONS_KIND:
                utils.err(
                    "invalid kind value '%s', allowed values are: %s"
                    % (value, ", ".join(OPTIONS_KIND))
                )
            attributes.append((name, normalized_value))
        elif name == "symmetrical":
            if value.lower() not in OPTIONS_SYMMETRICAL:
                utils.err(
                    "invalid symmetrical value '%s', allowed values are: %s"
                    % (value, ", ".join(OPTIONS_SYMMETRICAL))
                )
            attributes.append((name, value.lower()))
        else:
            utils.err(
                "invalid option '%s', allowed options are: %s"
                % (name, "kind, symmetrical, id")
            )

    if not id_specified:
        order_id = "pcs_rsc_order"
        for a in argv:
            if "=" not in a:
                order_id += "_" + a
        attributes.append(("id", utils.find_unique_id(cib, order_id)))

    rsc_order = cib.createElement("rsc_order")
    for name, value in attributes:
        rsc_order.setAttribute(name, value)
    set_add_resource_sets(rsc_order, resource_sets, cib)
    constraints.appendChild(rsc_order)
    utils.replace_cib_configuration(cib)
示例#13
0
def colocation_set(argv):
    setoptions = []
    for i in range(len(argv)):
        if argv[i] == "setoptions":
            setoptions = argv[i+1:]
            argv[i:] = []
            break

    argv.insert(0, "set")
    resource_sets = set_args_into_array(argv)
    if not check_empty_resource_sets(resource_sets):
        usage.constraint(["colocation set"])
        sys.exit(1)
    cib, constraints = getCurrentConstraints(utils.get_cib_dom())

    attributes = []
    score_options = ("score", "score-attribute", "score-attribute-mangle")
    score_specified = False
    id_specified = False
    for opt in setoptions:
        if "=" not in opt:
            utils.err("missing value of '%s' option" % opt)
        name, value = opt.split("=", 1)
        if name == "id":
            id_valid, id_error = utils.validate_xml_id(value, 'constraint id')
            if not id_valid:
                utils.err(id_error)
            if utils.does_id_exist(cib, value):
                utils.err(
                    "id '%s' is already in use, please specify another one"
                    % value
                )
            id_specified = True
            attributes.append((name, value))
        elif name in score_options:
            if score_specified:
                utils.err("you cannot specify multiple score options")
            if name == "score" and not utils.is_score(value):
                utils.err(
                    "invalid score '%s', use integer or INFINITY or -INFINITY"
                    % value
                )
            score_specified = True
            attributes.append((name, value))
        else:
            utils.err(
                "invalid option '%s', allowed options are: %s"
                % (name, ", ".join(score_options + ("id",)))
            )

    if not score_specified:
        attributes.append(("score", "INFINITY"))
    if not id_specified:
        colocation_id = "pcs_rsc_colocation"
        for a in argv:
            if "=" not in a:
                colocation_id += "_" + a
        attributes.append(("id", utils.find_unique_id(cib, colocation_id)))

    rsc_colocation = cib.createElement("rsc_colocation")
    for name, value in attributes:
        rsc_colocation.setAttribute(name, value)
    set_add_resource_sets(rsc_colocation, resource_sets, cib)
    constraints.appendChild(rsc_colocation)
    utils.replace_cib_configuration(cib)
示例#14
0
def location_rule(lib, argv, modifiers):
    """
    Options:
      * -f - CIB file
      * --force - allow constraint on any resource type, allow duplicate
        constraints
    """
    del lib
    modifiers.ensure_only_supported("-f", "--force")
    if len(argv) < 3:
        usage.constraint(["location", "rule"])
        sys.exit(1)

    rsc_type, rsc_value = parse_args.parse_typed_arg(
        argv.pop(0), [RESOURCE_TYPE_RESOURCE, RESOURCE_TYPE_REGEXP],
        RESOURCE_TYPE_RESOURCE)
    argv.pop(0)  # pop "rule"
    options, rule_argv = rule_utils.parse_argv(argv, {
        "constraint-id": None,
        "resource-discovery": None,
    })
    resource_discovery = ("resource-discovery" in options
                          and options["resource-discovery"])

    required_version = None
    if resource_discovery:
        required_version = 2, 2, 0
    if rsc_type == RESOURCE_TYPE_REGEXP:
        required_version = 2, 6, 0

    if required_version:
        dom = utils.cluster_upgrade_to_version(required_version)
    else:
        dom = utils.get_cib_dom()

    if rsc_type == RESOURCE_TYPE_RESOURCE:
        rsc_valid, rsc_error, dummy_correct_id = (
            utils.validate_constraint_resource(dom, rsc_value))
        if not rsc_valid:
            utils.err(rsc_error)

    cib, constraints = getCurrentConstraints(dom)
    lc = cib.createElement("rsc_location")

    # If resource-discovery is specified, we use it with the rsc_location
    # element not the rule
    if resource_discovery:
        lc.setAttribute("resource-discovery",
                        options.pop("resource-discovery"))

    constraints.appendChild(lc)
    if options.get("constraint-id"):
        id_valid, id_error = utils.validate_xml_id(options["constraint-id"],
                                                   'constraint id')
        if not id_valid:
            utils.err(id_error)
        if utils.does_id_exist(dom, options["constraint-id"]):
            utils.err("id '%s' is already in use, please specify another one" %
                      options["constraint-id"])
        lc.setAttribute("id", options["constraint-id"])
        del options["constraint-id"]
    else:
        lc.setAttribute(
            "id",
            utils.find_unique_id(dom, sanitize_id("location-" + rsc_value)))
    if rsc_type == RESOURCE_TYPE_RESOURCE:
        lc.setAttribute("rsc", rsc_value)
    elif rsc_type == RESOURCE_TYPE_REGEXP:
        lc.setAttribute("rsc-pattern", rsc_value)

    rule_utils.dom_rule_add(lc, options, rule_argv)
    location_rule_check_duplicates(constraints, lc, modifiers.get("--force"))
    utils.replace_cib_configuration(cib)
示例#15
0
def colocation_add(argv):
    if len(argv) < 2:
        usage.constraint()
        sys.exit(1)

    role1 = ""
    role2 = ""
    if len(argv) > 2:
        if not utils.is_score_or_opt(argv[2]):
            if argv[2] == "with":
                role1 = argv.pop(0).lower().capitalize()
                resource1 = argv.pop(0)
            else:
                resource1 = argv.pop(0)

            argv.pop(0) # Pop 'with'

            if len(argv) == 1:
                resource2 = argv.pop(0)
            else:
                if utils.is_score_or_opt(argv[1]):
                    resource2 = argv.pop(0)
                else:
                    role2 = argv.pop(0).lower().capitalize()
                    resource2 = argv.pop(0)
        else:
            resource1 = argv.pop(0)
            resource2 = argv.pop(0)
    else:
        resource1 = argv.pop(0)
        resource2 = argv.pop(0)

    cib_dom = utils.get_cib_dom()
    resource_valid, resource_error, correct_id \
        = utils.validate_constraint_resource(cib_dom, resource1)
    if "--autocorrect" in utils.pcs_options and correct_id:
        resource1 = correct_id
    elif not resource_valid:
        utils.err(resource_error)
    resource_valid, resource_error, correct_id \
        = utils.validate_constraint_resource(cib_dom, resource2)
    if "--autocorrect" in utils.pcs_options and correct_id:
        resource2 = correct_id
    elif not resource_valid:
        utils.err(resource_error)

    score,nv_pairs = parse_score_options(argv)
    id_in_nvpairs = None
    for name, value in nv_pairs:
        if name == "id":
            id_valid, id_error = utils.validate_xml_id(value, 'constraint id')
            if not id_valid:
                utils.err(id_error)
            if utils.does_id_exist(cib_dom, value):
                utils.err(
                    "id '%s' is already in use, please specify another one"
                    % value
                )
            id_in_nvpairs = True
    if not id_in_nvpairs:
        nv_pairs.append((
            "id",
            utils.find_unique_id(
                cib_dom,
                "colocation-%s-%s-%s" % (resource1, resource2, score)
            )
        ))

    (dom,constraintsElement) = getCurrentConstraints(cib_dom)

# If one role is specified, the other should default to "started"
    if role1 != "" and role2 == "":
        role2 = DEFAULT_ROLE
    if role2 != "" and role1 == "":
        role1 = DEFAULT_ROLE
    element = dom.createElement("rsc_colocation")
    element.setAttribute("rsc",resource1)
    element.setAttribute("with-rsc",resource2)
    element.setAttribute("score",score)
    if role1 != "":
        element.setAttribute("rsc-role", role1)
    if role2 != "":
        element.setAttribute("with-rsc-role", role2)
    for nv_pair in nv_pairs:
        element.setAttribute(nv_pair[0], nv_pair[1])
    if "--force" not in utils.pcs_options:
        duplicates = colocation_find_duplicates(constraintsElement, element)
        if duplicates:
            utils.err(
                "duplicate constraint already exists, use --force to override\n"
                + "\n".join([
                    "  " + constraint_colocation.console_report.constraint_plain(
                            {"options": dict(dup.attributes.items())},
                            True
                        )
                    for dup in duplicates
                ])
            )
    constraintsElement.appendChild(element)
    utils.replace_cib_configuration(dom)
示例#16
0
文件: rule.py 项目: vvidic/pcs
def dom_rule_add(dom_element, options, rule_argv, cib_schema_version):
    # pylint: disable=too-many-branches
    """
    Commandline options: no options
    """
    # validate options
    if options.get("score") and options.get("score-attribute"):
        utils.err("can not specify both score and score-attribute")
    if options.get("score") and not utils.is_score(options["score"]):
        utils.err("invalid score'{score}'".format(score=options["score"]))
    if options.get("role"):
        role = options["role"].capitalize()
        utils.print_depracation_warning_for_legacy_roles(options["role"])
        supported_roles = (const.PCMK_ROLES_PROMOTED +
                           const.PCMK_ROLES_UNPROMOTED)
        if role not in supported_roles:
            utils.err("invalid role '{role}', use {supported_roles}".format(
                role=options["role"],
                supported_roles=format_list_custom_last_separator(
                    list(supported_roles), " or "),
            ))
        options["role"] = pacemaker.role.get_value_for_cib(
            role,
            cib_schema_version >= const.PCMK_NEW_ROLES_CIB_VERSION,
        )
    if options.get("id"):
        id_valid, id_error = utils.validate_xml_id(options["id"], "rule id")
        if not id_valid:
            utils.err(id_error)
        if utils.does_id_exist(dom_element.ownerDocument, options["id"]):
            utils.err("id '%s' is already in use, please specify another one" %
                      options["id"])

    # parse rule
    if not rule_argv:
        utils.err("no rule expression was specified")
    try:
        preprocessor = TokenPreprocessor()
        dom_rule = CibBuilder(cib_schema_version).build(
            dom_element,
            RuleParser().parse(preprocessor.run(rule_argv)),
            options.get("id"),
        )
    except SyntaxError as e:
        utils.err("'%s' is not a valid rule expression: %s" %
                  (" ".join(rule_argv), e))
    except UnexpectedEndOfInput as e:
        utils.err(
            "'%s' is not a valid rule expression: unexpected end of rule" %
            " ".join(rule_argv))
    except (ParserException, CibBuilderException) as e:
        utils.err("'%s' is not a valid rule expression" % " ".join(rule_argv))

    # add options into rule xml
    if not options.get("score") and not options.get("score-attribute"):
        options["score"] = "INFINITY"
    for name, value in options.items():
        if name != "id" and value is not None:
            dom_rule.setAttribute(name, value)
    # score or score-attribute is required for the nested rules in order to have
    # valid CIB, pacemaker does not use the score of the nested rules
    for rule in dom_rule.getElementsByTagName("rule"):
        rule.setAttribute("score", "0")
    if dom_element.hasAttribute("score"):
        dom_element.removeAttribute("score")
    if dom_element.hasAttribute("node"):
        dom_element.removeAttribute("node")
    return dom_element
示例#17
0
def order_add(argv,returnElementOnly=False):
    if len(argv) < 2:
        usage.constraint()
        sys.exit(1)

    resource1 = argv.pop(0)
    resource2 = argv.pop(0)

    cib_dom = utils.get_cib_dom()
    resource_valid, resource_error, correct_id \
        = utils.validate_constraint_resource(cib_dom, resource1)
    if "--autocorrect" in utils.pcs_options and correct_id:
        resource1 = correct_id
    elif not resource_valid:
        utils.err(resource_error)
    resource_valid, resource_error, correct_id \
        = utils.validate_constraint_resource(cib_dom, resource2)
    if "--autocorrect" in utils.pcs_options and correct_id:
        resource2 = correct_id
    elif not resource_valid:
        utils.err(resource_error)

    order_options = []
    id_specified = False
    sym = None
    for arg in argv:
        if arg == "symmetrical":
            sym = "true"
        elif arg == "nonsymmetrical":
            sym = "false"
        elif "=" in arg:
            name, value = arg.split("=", 1)
            if name == "id":
                id_valid, id_error = utils.validate_xml_id(value, 'constraint id')
                if not id_valid:
                    utils.err(id_error)
                if utils.does_id_exist(cib_dom, value):
                    utils.err(
                        "id '%s' is already in use, please specify another one"
                        % value
                    )
                id_specified = True
                order_options.append((name, value))
            elif name == "symmetrical":
                if value.lower() in OPTIONS_SYMMETRICAL:
                    sym = value.lower()
                else:
                    utils.err(
                        "invalid symmetrical value '%s', allowed values are: %s"
                        % (value, ", ".join(OPTIONS_SYMMETRICAL))
                    )
            else:
                order_options.append((name, value))
    if sym:
        order_options.append(("symmetrical", sym))

    options = ""
    if order_options:
        options = " (Options: %s)" % " ".join([
            "%s=%s" % (name, value)
                for name, value in order_options
                    if name not in ("kind", "score")
        ])

    scorekind = "kind: Mandatory"
    id_suffix = "mandatory"
    for opt in order_options:
        if opt[0] == "score":
            scorekind = "score: " + opt[1]
            id_suffix = opt[1]
            break
        if opt[0] == "kind":
            scorekind = "kind: " + opt[1]
            id_suffix = opt[1]
            break

    if not id_specified:
        order_id = "order-" + resource1 + "-" + resource2 + "-" + id_suffix
        order_id = utils.find_unique_id(cib_dom, order_id)
        order_options.append(("id", order_id))

    (dom,constraintsElement) = getCurrentConstraints()
    element = dom.createElement("rsc_order")
    element.setAttribute("first",resource1)
    element.setAttribute("then",resource2)
    for order_opt in order_options:
        element.setAttribute(order_opt[0], order_opt[1])
    constraintsElement.appendChild(element)
    if "--force" not in utils.pcs_options:
        duplicates = order_find_duplicates(constraintsElement, element)
        if duplicates:
            utils.err(
                "duplicate constraint already exists, use --force to override\n"
                + "\n".join([
                    "  " + constraint_order.console_report.constraint_plain(
                            {"options": dict(dup.attributes.items())},
                            True
                        ) for dup in duplicates
                ])
            )
    print(
        "Adding " + resource1 + " " + resource2 + " ("+scorekind+")" + options
    )

    if returnElementOnly == False:
        utils.replace_cib_configuration(dom)
    else:
        return element.toxml()
示例#18
0
文件: rule.py 项目: HideoYamauchi/pcs
def dom_rule_add(dom_element, options, rule_argv):
    # validate options
    if options.get("score") and options.get("score-attribute"):
        utils.err("can not specify both score and score-attribute")
    if options.get("score") and not utils.is_score(options["score"]):
        # preserving legacy behaviour
        print(
            "Warning: invalid score '%s', setting score-attribute=pingd instead"
            % options["score"]
        )
        options["score-attribute"] = "pingd"
        options["score"] = None
    if options.get("role") and options["role"] not in ["master", "slave"]:
        utils.err(
            "invalid role '%s', use 'master' or 'slave'" % options["role"]
        )
    if options.get("id"):
        id_valid, id_error = utils.validate_xml_id(options["id"], 'rule id')
        if not id_valid:
            utils.err(id_error)
        if utils.does_id_exist(dom_element.ownerDocument, options["id"]):
            utils.err(
                "id '%s' is already in use, please specify another one"
                % options["id"]
            )

    # parse rule
    if not rule_argv:
        utils.err("no rule expression was specified")
    try:
        dom_rule = CibBuilder().build(
            dom_element,
            RuleParser().parse(TokenPreprocessor().run(rule_argv)),
            options.get("id")
        )
    except SyntaxError as e:
        utils.err(
            "'%s' is not a valid rule expression: %s"
            % (" ".join(rule_argv), e)
        )
    except UnexpectedEndOfInput as e:
        utils.err(
            "'%s' is not a valid rule expression: unexpected end of rule"
            % " ".join(rule_argv)
        )
    except (ParserException, CibBuilderException) as e:
        utils.err("'%s' is not a valid rule expression" % " ".join(rule_argv))

    # add options into rule xml
    if not options.get("score") and not options.get("score-attribute"):
        options["score"] = "INFINITY"
    for name, value in options.items():
        if name != "id" and value is not None:
            dom_rule.setAttribute(name, value)
    # score or score-attribute is required for the nested rules in order to have
    # valid CIB, pacemaker does not use the score of the nested rules
    for rule in dom_rule.getElementsByTagName("rule"):
        rule.setAttribute("score", "0")
    if dom_element.hasAttribute("score"):
        dom_element.removeAttribute("score")
    if dom_element.hasAttribute("node"):
        dom_element.removeAttribute("node")
    return dom_element
示例#19
0
def location_add(argv,rm=False):
    if rm:
        location_remove(argv)
        return

    if len(argv) < 4:
        usage.constraint(["location add"])
        sys.exit(1)

    constraint_id = argv.pop(0)
    rsc_type, rsc_value = parse_args.parse_typed_arg(
        argv.pop(0),
        [RESOURCE_TYPE_RESOURCE, RESOURCE_TYPE_REGEXP],
        RESOURCE_TYPE_RESOURCE
    )
    node = argv.pop(0)
    score = argv.pop(0)
    options = []
    # For now we only allow setting resource-discovery
    if len(argv) > 0:
        for arg in argv:
            if '=' in arg:
                options.append(arg.split('=',1))
            else:
                print("Error: bad option '%s'" % arg)
                usage.constraint(["location add"])
                sys.exit(1)
            if options[-1][0] != "resource-discovery" and "--force" not in utils.pcs_options:
                utils.err("bad option '%s', use --force to override" % options[-1][0])

    id_valid, id_error = utils.validate_xml_id(constraint_id, 'constraint id')
    if not id_valid:
        utils.err(id_error)

    if not utils.is_score(score):
        utils.err("invalid score '%s', use integer or INFINITY or -INFINITY" % score)

    required_version = None
    if rsc_type == RESOURCE_TYPE_REGEXP:
        required_version = 2, 6, 0

    if required_version:
        dom = utils.cluster_upgrade_to_version(required_version)
    else:
        dom = utils.get_cib_dom()

    if rsc_type == RESOURCE_TYPE_RESOURCE:
        rsc_valid, rsc_error, correct_id = utils.validate_constraint_resource(
            dom, rsc_value
        )
        if "--autocorrect" in utils.pcs_options and correct_id:
            rsc_value = correct_id
        elif not rsc_valid:
            utils.err(rsc_error)

    # Verify current constraint doesn't already exist
    # If it does we replace it with the new constraint
    dummy_dom, constraintsElement = getCurrentConstraints(dom)
    elementsToRemove = []
    # If the id matches, or the rsc & node match, then we replace/remove
    for rsc_loc in constraintsElement.getElementsByTagName('rsc_location'):
        if (
            rsc_loc.getAttribute("id") == constraint_id
            or
            (
                rsc_loc.getAttribute("node") == node
                and
                (
                    (
                        RESOURCE_TYPE_RESOURCE == rsc_type
                        and
                        rsc_loc.getAttribute("rsc") == rsc_value
                    )
                    or
                    (
                        RESOURCE_TYPE_REGEXP == rsc_type
                        and
                        rsc_loc.getAttribute("rsc-pattern") == rsc_value
                    )
                )
            )
        ):
            elementsToRemove.append(rsc_loc)
    for etr in elementsToRemove:
        constraintsElement.removeChild(etr)

    element = dom.createElement("rsc_location")
    element.setAttribute("id",constraint_id)
    if rsc_type == RESOURCE_TYPE_RESOURCE:
        element.setAttribute("rsc", rsc_value)
    elif rsc_type == RESOURCE_TYPE_REGEXP:
        element.setAttribute("rsc-pattern", rsc_value)
    element.setAttribute("node",node)
    element.setAttribute("score",score)
    for option in options:
        element.setAttribute(option[0], option[1])
    constraintsElement.appendChild(element)

    utils.replace_cib_configuration(dom)