81 lines
1.6 KiB
TypeScript
81 lines
1.6 KiB
TypeScript
namespace _espe.database
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{
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/**
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*/
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const _compatible_revisions : Array<string> = [
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"r3",
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];
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/**
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*/
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export function get_implementation(
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) : lib_plankton.database.type_database
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{
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switch (_espe.conf.get().database.kind) {
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case "sqlite": {
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return lib_plankton.database.sqlite_database(
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{
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"path": _espe.conf.get().database.data["path"],
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"verbose": false,
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}
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);
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break;
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}
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default: {
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throw (new Error("database implementation not available: " + _espe.conf.get().database.kind));
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}
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}
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}
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/**
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*/
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function get_revision(
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) : Promise<(null | string)>
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{
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return (
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get_implementation().query_select(
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{
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"source": "_meta",
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"fields": ["revision"],
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}
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)
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.then<(null | string)>(
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(rows) => Promise.resolve<(null | string)>(rows[0]["revision"])
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)
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.catch<(null | string)>(
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() => Promise.resolve<(null | string)>(null)
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)
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);
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}
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/**
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*/
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export async function check(
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) : Promise<void>
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{
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const revision : (null | string) = await get_revision();
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lib_plankton.log.info(
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"database_check",
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{
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"revision_found": revision,
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"revisions_compatible": _compatible_revisions,
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}
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);
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if (revision === null) {
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return Promise.reject<void>(new Error("database appearently missing"));
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}
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else {
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if (! _compatible_revisions.includes(revision)) {
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return Promise.reject<void>(new Error("database revision incompatible; found: " + revision + "; required: " + String(_compatible_revisions)));
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}
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else {
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return Promise.resolve<void>(undefined);
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}
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}
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}
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}
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