Implement NodeBalancers
This commit is contained in:
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/*
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* This file is part of Linode Manager Classic.
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*
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* Linode Manager Classic is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Linode Manager Classic is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Linode Manager Classic. If not, see <https://www.gnu.org/licenses/>.
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*/
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import { settings, elements, apiDelete, apiGet, apiPost, apiPut, parseParams, setupHeader } from "/global.js";
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(function()
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{
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// Element names specific to this page
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elements.algorithm = "algorithm";
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elements.centerCell = "center-cell";
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elements.checkAttempts = "check-attempts";
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elements.checkBody = "check-body";
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elements.checkInterval = "check-interval";
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elements.checkPath = "check-path";
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elements.checkShow = "check-show";
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elements.checkTimeout = "check-timeout";
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elements.checkType = "check-type";
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elements.cipherSuite = "cipher-suite";
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elements.commonName = "common-name";
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elements.configLabel = "config-label";
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elements.fingerprint = "fingerprint";
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elements.lmcRow = "lmc-tr1";
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elements.lmcRowAlt = "lmc-tr2";
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elements.nodebalancerLabel = "nodebalancer-label";
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elements.nodebalancerTag = "nodebalancer-tag";
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elements.nodebalancerTagLink = "nodebalancer-tag-link";
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elements.nodesTable = "nodes-table";
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elements.nonzero = "nonzero";
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elements.passive = "passive";
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elements.port = "port";
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elements.protocol = "protocol";
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elements.protocolShow = "protocol-show";
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elements.proxyProtocol = "proxy-protocol";
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elements.removePrefix = "remove-node-";
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elements.replaceCert = "replace-cert";
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elements.replaceCertOnly = "replace-cert-only";
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elements.replaceLink = "replace-link";
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elements.saveButton = "save-button";
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elements.sslCert = "ssl-cert";
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elements.sslKey = "ssl-key";
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elements.stickiness = "stickiness";
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// Data recieved from API calls
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var data = {};
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data.config = {};
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data.nodebalancer = {};
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data.nodes = [];
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// Static references to UI elements
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var ui = {};
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ui.algorithm = {};
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ui.checkAttempts = {};
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ui.checkBody = {};
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ui.checkInterval = {};
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ui.checkPath = {};
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ui.checkShow = [];
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ui.checkTimeout = {};
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ui.checkType = {};
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ui.cipherSuite = {};
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ui.commonName = {};
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ui.configLabel = {};
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ui.fingerprint = {};
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ui.nodebalancerLabel = {};
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ui.nodebalancerTag = {};
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ui.nodebalancerTagLink = {};
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ui.nodesTable = {};
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ui.passive = {};
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ui.port = {};
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ui.protocol = {};
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ui.protocolShow = [];
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ui.proxyProtocol = {};
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ui.saveButton = {};
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ui.replaceLink = {};
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ui.sslCert = {};
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ui.sslKey = {};
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ui.stickiness = {};
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// Temporary State
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var state = {};
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state.replaceCert = true;
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// Create a row for the nodes table
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var createNodeRow = function(node, alt)
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{
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var row = document.createElement("tr");
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if (alt)
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row.className = elements.lmcRowAlt;
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else
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row.className = elements.lmcRow;
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var label = document.createElement("td");
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label.innerHTML = node.label;
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row.appendChild(label);
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var address = document.createElement("td");
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var lastColon = node.address.lastIndexOf(":");
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address.innerHTML = node.address.slice(0, lastColon);
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row.appendChild(address);
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var port = document.createElement("td");
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port.innerHTML = node.address.slice(lastColon + 1);
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row.appendChild(port);
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var weight = document.createElement("td");
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weight.innerHTML = node.weight;
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row.appendChild(weight);
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var mode = document.createElement("td");
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mode.innerHTML = node.mode.charAt(0).toUpperCase() + node.mode.slice(1);
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row.appendChild(mode);
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var status = document.createElement("td");
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status.innerHTML = node.status;
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row.appendChild(status);
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var options = document.createElement("td");
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options.className = elements.centerCell;
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var editLink = document.createElement("a");
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editLink.href = "/nodebalancers/node?nbid=" + data.params.nbid + "&nbcid=" + data.params.nbcid + "&nbnid=" + node.id;
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editLink.innerHTML = "Edit";
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var separator = document.createElement("span");
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separator.innerHTML = " | ";
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var removeLink = document.createElement("a");
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removeLink.id = elements.removePrefix + node.id;
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removeLink.href = "#";
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removeLink.innerHTML = "Remove";
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removeLink.addEventListener("click", handleRemoveNode);
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options.appendChild(editLink);
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options.appendChild(separator);
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options.appendChild(removeLink);
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row.appendChild(options);
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return row;
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};
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// Callback for config API call
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var displayConfig = function(response)
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{
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data.config = response;
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ui.configLabel.innerHTML = "Port " + data.config.port;
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ui.port.value = data.config.port;
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ui.protocol.value = data.config.protocol;
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ui.proxyProtocol.value = data.config.proxy_protocol;
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ui.algorithm.value = data.config.algorithm;
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ui.stickiness.value = data.config.stickiness;
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ui.commonName.innerHTML = data.config.ssl_commonname;
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ui.fingerprint.innerHTML = data.config.ssl_fingerprint;
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ui.cipherSuite.value = data.config.cipher_suite;
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ui.checkType.value = data.config.check;
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ui.checkInterval.value = data.config.check_interval;
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ui.checkTimeout.value = data.config.check_timeout;
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ui.checkAttempts.value = data.config.check_attempts;
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ui.checkPath.value = data.config.check_path;
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ui.checkBody.value = data.config.check_body;
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ui.passive.checked = data.config.check_passive;
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state.replaceCert = (!data.config.ssl_key || data.config.ssl_key.indexOf("<REDACTED>") == -1);
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ui.saveButton.disabled = false;
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showHideChecks();
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showHideProtocol();
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};
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// Callback for nodebalancer API call
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var displayNodebalancer = function(response)
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{
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data.nodebalancer = response;
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// Set page title and header stuff
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if (document.title.indexOf("//") == -1)
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document.title += " // Edit " + data.nodebalancer.label;
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ui.nodebalancerLabel.innerHTML = data.nodebalancer.label;
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if (data.nodebalancer.tags.length == 1) {
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ui.nodebalancerTagLink.href = "/nodebalancers?tag=" + data.nodebalancer.tags[0];
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ui.nodebalancerTagLink.innerHTML = "(" + data.nodebalancer.tags[0] + ")";
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ui.nodebalancerTag.style.display = "inline";
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} else {
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ui.nodebalancerTag.style.display = "none";
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}
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};
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// Callback for nodes API call
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var displayNodes = function(response)
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{
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data.nodes = data.nodes.concat(response.data);
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// Request the next page if there are more pages
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if (response.page != response.pages) {
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apiGet("/nodebalancers/" + data.params.nbid + "/configs/" + data.params.nbcid + "/nodes?page=" + (response.page + 1), displayNodes, null);
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return;
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}
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// Insert nodes into table
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for (var i = 0; i < data.nodes.length; i++)
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ui.nodesTable.appendChild(createNodeRow(data.nodes[i], i % 2));
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};
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// Remove node handler
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var handleRemoveNode = function(event)
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{
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if (!confirm("Are you sure you want to remove this node?"))
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return;
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var nbnid = event.currentTarget.id.substring(elements.removePrefix.length);
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apiDelete("/nodebalancers/" + data.params.nbid + "/configs/" + data.params.nbcid + "/nodes/" + nbnid, function()
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{
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location.reload();
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});
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};
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// Replace link handler
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var handleReplace = function(event)
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{
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state.replaceCert = true;
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showHideProtocol();
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};
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// Save button handler
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var handleSave = function(event)
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{
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if (event.currentTarget.disabled)
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return;
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var req = {
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"port": parseInt(ui.port.value),
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"protocol": ui.protocol.value,
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"algorithm": ui.algorithm.value,
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"stickiness": ui.stickiness.value,
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"check": ui.checkType.value,
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"check_passive": ui.passive.checked
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};
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if (ui.protocol.value == "tcp") {
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req.proxy_protocol = ui.proxyProtocol.value;
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} else if (ui.protocol.value == "https") {
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req.cipher_suite = ui.cipherSuite.value;
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if (state.replaceCert) {
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req.ssl_cert = ui.sslCert.value;
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req.ssl_key = ui.sslKey.value;
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}
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}
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switch (ui.checkType.value) {
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case "http_body":
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req.check_body = ui.checkBody.value;
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case "http":
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req.check_path = ui.checkPath.value;
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case "connection":
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req.check_interval = parseInt(ui.checkInterval.value);
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req.check_timeout = parseInt(ui.checkTimeout.value);
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req.check_attempts = parseInt(ui.checkAttempts.value);
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}
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if (data.params.nbcid == 0) {
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apiPost("/nodebalancers/" + data.params.nbid + "/configs", req, function(response)
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{
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location.href = "/nodebalancers/config?nbid=" + data.params.nbid + "&nbcid=" + response.id;
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});
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} else {
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apiPut("/nodebalancers/" + data.params.nbid + "/configs/" + data.params.nbcid, req, function(response)
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{
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location.href = "/nodebalancers/balancer?nbid=" + data.params.nbid;
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});
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}
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};
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// Initial setup
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var setup = function()
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{
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// Parse URL parameters
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data.params = parseParams();
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// We need a NodeBalancer ID, so die if we don't have it
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if (!data.params.nbid) {
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alert("No NodeBalancer ID supplied!");
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return;
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}
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// We also need a config ID
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if (!data.params.nbcid) {
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alert("No config ID supplied!");
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return;
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}
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setupHeader();
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// Update links on page to include proper Linode ID
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var anchors = document.getElementsByTagName("a");
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for (var i = 0; i < anchors.length; i++) {
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anchors[i].href = anchors[i].href.replace("nbid=0", "nbid=" + data.params.nbid);
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anchors[i].href = anchors[i].href.replace("nbcid=0", "nbcid=" + data.params.nbcid);
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}
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// Get element references
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ui.algorithm = document.getElementById(elements.algorithm);
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ui.checkAttempts = document.getElementById(elements.checkAttempts);
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ui.checkBody = document.getElementById(elements.checkBody);
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ui.checkInterval = document.getElementById(elements.checkInterval);
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ui.checkPath = document.getElementById(elements.checkPath);
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ui.checkShow = document.getElementsByClassName(elements.checkShow);
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ui.checkTimeout = document.getElementById(elements.checkTimeout);
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ui.checkType = document.getElementById(elements.checkType);
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ui.cipherSuite = document.getElementById(elements.cipherSuite);
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ui.commonName = document.getElementById(elements.commonName);
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ui.configLabel = document.getElementById(elements.configLabel);
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ui.fingerprint = document.getElementById(elements.fingerprint);
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ui.nodebalancerLabel = document.getElementById(elements.nodebalancerLabel);
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ui.nodebalancerTag = document.getElementById(elements.nodebalancerTag);
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ui.nodebalancerTagLink = document.getElementById(elements.nodebalancerTagLink);
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ui.nodesTable = document.getElementById(elements.nodesTable);
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ui.passive = document.getElementById(elements.passive);
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ui.port = document.getElementById(elements.port);
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ui.protocol = document.getElementById(elements.protocol);
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ui.protocolShow = document.getElementsByClassName(elements.protocolShow);
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ui.proxyProtocol = document.getElementById(elements.proxyProtocol);
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ui.replaceLink = document.getElementById(elements.replaceLink);
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ui.saveButton = document.getElementById(elements.saveButton);
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ui.sslCert = document.getElementById(elements.sslCert);
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ui.sslKey = document.getElementById(elements.sslKey);
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ui.stickiness = document.getElementById(elements.stickiness);
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// Register event handlers
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ui.checkType.addEventListener("input", showHideChecks);
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ui.protocol.addEventListener("input", showHideProtocol);
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ui.replaceLink.addEventListener("click", handleReplace);
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ui.saveButton.addEventListener("click", handleSave);
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// Get data from API
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apiGet("/nodebalancers/" + data.params.nbid, displayNodebalancer, null);
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if (parseInt(data.params.nbcid)) {
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apiGet("/nodebalancers/" + data.params.nbid + "/configs/" + data.params.nbcid, displayConfig, null);
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apiGet("/nodebalancers/" + data.params.nbid + "/configs/" + data.params.nbcid + "/nodes", displayNodes, null);
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} else {
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ui.configLabel.innerHTML = "Create Configuration";
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ui.saveButton.disabled = false;
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var hideElements = document.getElementsByClassName(elements.nonzero);
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for (var i = 0; i < hideElements.length; i++)
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hideElements[i].style.display = "none";
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}
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};
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// Show/hide check rows
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var showHideChecks = function(event)
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{
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for (var i = 0; i < ui.checkShow.length; i++) {
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if (ui.checkShow[i].classList.contains(elements.checkShow + "-" + ui.checkType.value))
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ui.checkShow[i].style.display = "table-row";
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else
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ui.checkShow[i].style.display = "none";
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}
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};
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// Show/hide protocol stuff
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var showHideProtocol = function(event)
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{
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for (var i = 0; i < ui.protocolShow.length; i++) {
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if (ui.protocolShow[i].classList.contains(elements.protocolShow + "-" + ui.protocol.value)) {
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if (ui.protocolShow[i].classList.contains(elements.replaceCert)) {
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if (ui.protocolShow[i].classList.contains(elements.replaceCertOnly) == state.replaceCert)
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ui.protocolShow[i].style.display = "table-row";
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else
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ui.protocolShow[i].style.display = "none";
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} else {
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ui.protocolShow[i].style.display = "table-row";
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}
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} else {
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ui.protocolShow[i].style.display = "none";
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}
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}
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if (data.params.nbcid == 0 && ui.protocol.value == "http")
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ui.port.value = 80;
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if (data.params.nbcid == 0 && ui.protocol.value == "https")
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ui.port.value = 443;
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};
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// Attach onload handler
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window.addEventListener("load", setup);
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})();
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Reference in New Issue
Block a user