71 lines
2.1 KiB
JavaScript
71 lines
2.1 KiB
JavaScript
/**
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* run 4 nodes on the current host
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*
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* - 1 PRIMARY
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* - 3 SECONDARY
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*
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* via HTTP interface
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*
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* - primary_failover
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*/
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var common_stmts = require("common_statements");
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var gr_memberships = require("gr_memberships");
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var gr_node_host = "127.0.0.1";
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var nodes = function(host, port_and_state) {
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return port_and_state.map(function (current_value) {
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return [ current_value[0], host, current_value[0], current_value[1], current_value[2]];
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});
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};
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// all nodes are online
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var group_replication_membership_online =
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nodes(gr_node_host, mysqld.global.gr_nodes);
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var options = {
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group_replication_membership: group_replication_membership_online,
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};
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// in the startup case, first node is PRIMARY
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options.group_replication_primary_member = options.group_replication_membership[0][0];
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// in case of failover, announce the 2nd node as PRIMARY
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var options_failover = Object.assign({}, options,
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{ group_replication_primary_member: options.group_replication_membership[1][0] });
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// prepare the responses for common statements
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var common_responses = common_stmts.prepare_statement_responses([
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"select_port",
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"router_select_schema_version",
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"router_select_metadata",
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"router_select_group_membership_with_primary_mode",
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], options);
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// allow to switch
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var router_select_group_replication_primary_member
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= common_stmts.get("router_select_group_replication_primary_member", options);
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var router_select_group_replication_primary_member_failover
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= common_stmts.get("router_select_group_replication_primary_member", options_failover);
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if (mysqld.global.primary_failover == undefined) {
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mysqld.global.primary_failover = false;
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}
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({
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stmts: function (stmt) {
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if (common_responses.hasOwnProperty(stmt)) {
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return common_responses[stmt];
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} else if (stmt === router_select_group_replication_primary_member.stmt) {
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if (!mysqld.global.primary_failover) {
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return router_select_group_replication_primary_member;
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} else {
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return router_select_group_replication_primary_member_failover;
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}
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} else {
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return common_stmts.unknown_statement_response(stmt);
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}
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}
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})
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