mirror of
https://github.com/binwiederhier/ntfy.git
synced 2024-12-23 10:12:38 +01:00
603 lines
17 KiB
Go
603 lines
17 KiB
Go
package server
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import (
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"database/sql"
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"encoding/json"
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"errors"
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"fmt"
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_ "github.com/mattn/go-sqlite3" // SQLite driver
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"heckel.io/ntfy/util"
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"log"
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"strings"
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"time"
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)
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var (
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errUnexpectedMessageType = errors.New("unexpected message type")
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)
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// Messages cache
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const (
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createMessagesTableQuery = `
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BEGIN;
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CREATE TABLE IF NOT EXISTS messages (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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mid TEXT NOT NULL,
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time INT NOT NULL,
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topic TEXT NOT NULL,
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message TEXT NOT NULL,
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title TEXT NOT NULL,
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priority INT NOT NULL,
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tags TEXT NOT NULL,
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click TEXT NOT NULL,
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actions TEXT NOT NULL,
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attachment_name TEXT NOT NULL,
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attachment_type TEXT NOT NULL,
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attachment_size INT NOT NULL,
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attachment_expires INT NOT NULL,
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attachment_url TEXT NOT NULL,
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attachment_owner TEXT NOT NULL,
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encoding TEXT NOT NULL,
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published INT NOT NULL
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);
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CREATE INDEX IF NOT EXISTS idx_mid ON messages (mid);
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CREATE INDEX IF NOT EXISTS idx_topic ON messages (topic);
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COMMIT;
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`
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insertMessageQuery = `
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INSERT INTO messages (mid, time, topic, message, title, priority, tags, click, actions, attachment_name, attachment_type, attachment_size, attachment_expires, attachment_url, attachment_owner, encoding, published)
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VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
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`
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pruneMessagesQuery = `DELETE FROM messages WHERE time < ? AND published = 1`
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selectRowIDFromMessageID = `SELECT id FROM messages WHERE topic = ? AND mid = ?`
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selectMessagesSinceTimeQuery = `
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SELECT mid, time, topic, message, title, priority, tags, click, actions, attachment_name, attachment_type, attachment_size, attachment_expires, attachment_url, attachment_owner, encoding
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FROM messages
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WHERE topic = ? AND time >= ? AND published = 1
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ORDER BY time, id
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`
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selectMessagesSinceTimeIncludeScheduledQuery = `
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SELECT mid, time, topic, message, title, priority, tags, click, actions, attachment_name, attachment_type, attachment_size, attachment_expires, attachment_url, attachment_owner, encoding
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FROM messages
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WHERE topic = ? AND time >= ?
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ORDER BY time, id
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`
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selectMessagesSinceIDQuery = `
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SELECT mid, time, topic, message, title, priority, tags, click, actions, attachment_name, attachment_type, attachment_size, attachment_expires, attachment_url, attachment_owner, encoding
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FROM messages
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WHERE topic = ? AND id > ? AND published = 1
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ORDER BY time, id
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`
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selectMessagesSinceIDIncludeScheduledQuery = `
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SELECT mid, time, topic, message, title, priority, tags, click, actions, attachment_name, attachment_type, attachment_size, attachment_expires, attachment_url, attachment_owner, encoding
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FROM messages
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WHERE topic = ? AND (id > ? OR published = 0)
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ORDER BY time, id
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`
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selectMessagesDueQuery = `
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SELECT mid, time, topic, message, title, priority, tags, click, actions, attachment_name, attachment_type, attachment_size, attachment_expires, attachment_url, attachment_owner, encoding
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FROM messages
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WHERE time <= ? AND published = 0
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ORDER BY time, id
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`
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updateMessagePublishedQuery = `UPDATE messages SET published = 1 WHERE mid = ?`
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selectMessagesCountQuery = `SELECT COUNT(*) FROM messages`
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selectMessageCountForTopicQuery = `SELECT COUNT(*) FROM messages WHERE topic = ?`
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selectTopicsQuery = `SELECT topic FROM messages GROUP BY topic`
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selectAttachmentsSizeQuery = `SELECT IFNULL(SUM(attachment_size), 0) FROM messages WHERE attachment_owner = ? AND attachment_expires >= ?`
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selectAttachmentsExpiredQuery = `SELECT mid FROM messages WHERE attachment_expires > 0 AND attachment_expires < ?`
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)
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// Schema management queries
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const (
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currentSchemaVersion = 6
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createSchemaVersionTableQuery = `
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CREATE TABLE IF NOT EXISTS schemaVersion (
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id INT PRIMARY KEY,
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version INT NOT NULL
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);
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`
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insertSchemaVersion = `INSERT INTO schemaVersion VALUES (1, ?)`
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updateSchemaVersion = `UPDATE schemaVersion SET version = ? WHERE id = 1`
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selectSchemaVersionQuery = `SELECT version FROM schemaVersion WHERE id = 1`
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// 0 -> 1
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migrate0To1AlterMessagesTableQuery = `
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BEGIN;
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ALTER TABLE messages ADD COLUMN title TEXT NOT NULL DEFAULT('');
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ALTER TABLE messages ADD COLUMN priority INT NOT NULL DEFAULT(0);
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ALTER TABLE messages ADD COLUMN tags TEXT NOT NULL DEFAULT('');
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COMMIT;
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`
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// 1 -> 2
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migrate1To2AlterMessagesTableQuery = `
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ALTER TABLE messages ADD COLUMN published INT NOT NULL DEFAULT(1);
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`
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// 2 -> 3
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migrate2To3AlterMessagesTableQuery = `
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BEGIN;
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ALTER TABLE messages ADD COLUMN click TEXT NOT NULL DEFAULT('');
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ALTER TABLE messages ADD COLUMN attachment_name TEXT NOT NULL DEFAULT('');
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ALTER TABLE messages ADD COLUMN attachment_type TEXT NOT NULL DEFAULT('');
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ALTER TABLE messages ADD COLUMN attachment_size INT NOT NULL DEFAULT('0');
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ALTER TABLE messages ADD COLUMN attachment_expires INT NOT NULL DEFAULT('0');
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ALTER TABLE messages ADD COLUMN attachment_owner TEXT NOT NULL DEFAULT('');
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ALTER TABLE messages ADD COLUMN attachment_url TEXT NOT NULL DEFAULT('');
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COMMIT;
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`
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// 3 -> 4
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migrate3To4AlterMessagesTableQuery = `
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ALTER TABLE messages ADD COLUMN encoding TEXT NOT NULL DEFAULT('');
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`
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// 4 -> 5
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migrate4To5AlterMessagesTableQuery = `
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BEGIN;
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CREATE TABLE IF NOT EXISTS messages_new (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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mid TEXT NOT NULL,
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time INT NOT NULL,
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topic TEXT NOT NULL,
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message TEXT NOT NULL,
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title TEXT NOT NULL,
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priority INT NOT NULL,
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tags TEXT NOT NULL,
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click TEXT NOT NULL,
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attachment_name TEXT NOT NULL,
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attachment_type TEXT NOT NULL,
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attachment_size INT NOT NULL,
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attachment_expires INT NOT NULL,
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attachment_url TEXT NOT NULL,
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attachment_owner TEXT NOT NULL,
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encoding TEXT NOT NULL,
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published INT NOT NULL
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);
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CREATE INDEX IF NOT EXISTS idx_mid ON messages_new (mid);
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CREATE INDEX IF NOT EXISTS idx_topic ON messages_new (topic);
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INSERT
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INTO messages_new (
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mid, time, topic, message, title, priority, tags, click, attachment_name, attachment_type,
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attachment_size, attachment_expires, attachment_url, attachment_owner, encoding, published)
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SELECT
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id, time, topic, message, title, priority, tags, click, attachment_name, attachment_type,
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attachment_size, attachment_expires, attachment_url, attachment_owner, encoding, published
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FROM messages;
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DROP TABLE messages;
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ALTER TABLE messages_new RENAME TO messages;
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COMMIT;
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`
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// 5 -> 6
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migrate5To6AlterMessagesTableQuery = `
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ALTER TABLE messages ADD COLUMN actions TEXT NOT NULL DEFAULT('');
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`
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)
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type messageCache struct {
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db *sql.DB
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nop bool
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}
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// newSqliteCache creates a SQLite file-backed cache
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func newSqliteCache(filename string, nop bool) (*messageCache, error) {
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db, err := sql.Open("sqlite3", filename)
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if err != nil {
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return nil, err
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}
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if err := setupCacheDB(db); err != nil {
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return nil, err
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}
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return &messageCache{
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db: db,
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nop: nop,
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}, nil
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}
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// newMemCache creates an in-memory cache
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func newMemCache() (*messageCache, error) {
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return newSqliteCache(createMemoryFilename(), false)
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}
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// newNopCache creates an in-memory cache that discards all messages;
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// it is always empty and can be used if caching is entirely disabled
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func newNopCache() (*messageCache, error) {
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return newSqliteCache(createMemoryFilename(), true)
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}
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// createMemoryFilename creates a unique memory filename to use for the SQLite backend.
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// From mattn/go-sqlite3: "Each connection to ":memory:" opens a brand new in-memory
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// sql database, so if the stdlib's sql engine happens to open another connection and
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// you've only specified ":memory:", that connection will see a brand new database.
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// A workaround is to use "file::memory:?cache=shared" (or "file:foobar?mode=memory&cache=shared").
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// Every connection to this string will point to the same in-memory database."
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func createMemoryFilename() string {
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return fmt.Sprintf("file:%s?mode=memory&cache=shared", util.RandomString(10))
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}
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func (c *messageCache) AddMessage(m *message) error {
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if m.Event != messageEvent {
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return errUnexpectedMessageType
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}
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if c.nop {
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return nil
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}
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published := m.Time <= time.Now().Unix()
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tags := strings.Join(m.Tags, ",")
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var attachmentName, attachmentType, attachmentURL, attachmentOwner string
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var attachmentSize, attachmentExpires int64
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if m.Attachment != nil {
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attachmentName = m.Attachment.Name
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attachmentType = m.Attachment.Type
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attachmentSize = m.Attachment.Size
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attachmentExpires = m.Attachment.Expires
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attachmentURL = m.Attachment.URL
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attachmentOwner = m.Attachment.Owner
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}
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var actionsStr string
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if len(m.Actions) > 0 {
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actionsBytes, err := json.Marshal(m.Actions)
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if err != nil {
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return err
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}
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actionsStr = string(actionsBytes)
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}
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_, err := c.db.Exec(
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insertMessageQuery,
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m.ID,
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m.Time,
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m.Topic,
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m.Message,
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m.Title,
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m.Priority,
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tags,
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m.Click,
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actionsStr,
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attachmentName,
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attachmentType,
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attachmentSize,
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attachmentExpires,
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attachmentURL,
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attachmentOwner,
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m.Encoding,
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published,
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)
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return err
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}
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func (c *messageCache) Messages(topic string, since sinceMarker, scheduled bool) ([]*message, error) {
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if since.IsNone() {
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return make([]*message, 0), nil
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} else if since.IsID() {
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return c.messagesSinceID(topic, since, scheduled)
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}
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return c.messagesSinceTime(topic, since, scheduled)
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}
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func (c *messageCache) messagesSinceTime(topic string, since sinceMarker, scheduled bool) ([]*message, error) {
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var rows *sql.Rows
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var err error
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if scheduled {
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rows, err = c.db.Query(selectMessagesSinceTimeIncludeScheduledQuery, topic, since.Time().Unix())
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} else {
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rows, err = c.db.Query(selectMessagesSinceTimeQuery, topic, since.Time().Unix())
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}
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if err != nil {
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return nil, err
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}
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return readMessages(rows)
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}
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func (c *messageCache) messagesSinceID(topic string, since sinceMarker, scheduled bool) ([]*message, error) {
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idrows, err := c.db.Query(selectRowIDFromMessageID, topic, since.ID())
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if err != nil {
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return nil, err
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}
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defer idrows.Close()
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if !idrows.Next() {
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return c.messagesSinceTime(topic, sinceAllMessages, scheduled)
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}
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var rowID int64
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if err := idrows.Scan(&rowID); err != nil {
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return nil, err
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}
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idrows.Close()
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var rows *sql.Rows
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if scheduled {
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rows, err = c.db.Query(selectMessagesSinceIDIncludeScheduledQuery, topic, rowID)
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} else {
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rows, err = c.db.Query(selectMessagesSinceIDQuery, topic, rowID)
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}
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if err != nil {
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return nil, err
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}
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return readMessages(rows)
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}
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func (c *messageCache) MessagesDue() ([]*message, error) {
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rows, err := c.db.Query(selectMessagesDueQuery, time.Now().Unix())
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if err != nil {
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return nil, err
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}
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return readMessages(rows)
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}
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func (c *messageCache) MarkPublished(m *message) error {
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_, err := c.db.Exec(updateMessagePublishedQuery, m.ID)
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return err
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}
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func (c *messageCache) MessageCount(topic string) (int, error) {
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rows, err := c.db.Query(selectMessageCountForTopicQuery, topic)
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if err != nil {
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return 0, err
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}
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defer rows.Close()
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var count int
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if !rows.Next() {
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return 0, errors.New("no rows found")
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}
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if err := rows.Scan(&count); err != nil {
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return 0, err
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} else if err := rows.Err(); err != nil {
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return 0, err
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}
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return count, nil
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}
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func (c *messageCache) Topics() (map[string]*topic, error) {
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rows, err := c.db.Query(selectTopicsQuery)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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topics := make(map[string]*topic)
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for rows.Next() {
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var id string
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if err := rows.Scan(&id); err != nil {
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return nil, err
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}
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topics[id] = newTopic(id)
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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return topics, nil
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}
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func (c *messageCache) Prune(olderThan time.Time) error {
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_, err := c.db.Exec(pruneMessagesQuery, olderThan.Unix())
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return err
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}
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func (c *messageCache) AttachmentBytesUsed(owner string) (int64, error) {
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rows, err := c.db.Query(selectAttachmentsSizeQuery, owner, time.Now().Unix())
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if err != nil {
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return 0, err
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}
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defer rows.Close()
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var size int64
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if !rows.Next() {
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return 0, errors.New("no rows found")
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}
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if err := rows.Scan(&size); err != nil {
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return 0, err
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} else if err := rows.Err(); err != nil {
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return 0, err
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}
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return size, nil
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}
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func (c *messageCache) AttachmentsExpired() ([]string, error) {
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rows, err := c.db.Query(selectAttachmentsExpiredQuery, time.Now().Unix())
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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ids := make([]string, 0)
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for rows.Next() {
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var id string
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if err := rows.Scan(&id); err != nil {
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return nil, err
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}
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ids = append(ids, id)
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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return ids, nil
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}
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func readMessages(rows *sql.Rows) ([]*message, error) {
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defer rows.Close()
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messages := make([]*message, 0)
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for rows.Next() {
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var timestamp, attachmentSize, attachmentExpires int64
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var priority int
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var id, topic, msg, title, tagsStr, click, actionsStr, attachmentName, attachmentType, attachmentURL, attachmentOwner, encoding string
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err := rows.Scan(
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&id,
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×tamp,
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&topic,
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&msg,
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&title,
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&priority,
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&tagsStr,
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&click,
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&actionsStr,
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&attachmentName,
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&attachmentType,
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&attachmentSize,
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&attachmentExpires,
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&attachmentURL,
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&attachmentOwner,
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&encoding,
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)
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if err != nil {
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return nil, err
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}
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var tags []string
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if tagsStr != "" {
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tags = strings.Split(tagsStr, ",")
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}
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var actions []*action
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if actionsStr != "" {
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if err := json.Unmarshal([]byte(actionsStr), &actions); err != nil {
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return nil, err
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}
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}
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var att *attachment
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if attachmentName != "" && attachmentURL != "" {
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att = &attachment{
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Name: attachmentName,
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Type: attachmentType,
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Size: attachmentSize,
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Expires: attachmentExpires,
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URL: attachmentURL,
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Owner: attachmentOwner,
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}
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}
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messages = append(messages, &message{
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ID: id,
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Time: timestamp,
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Event: messageEvent,
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Topic: topic,
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Message: msg,
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Title: title,
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Priority: priority,
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Tags: tags,
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Click: click,
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Actions: actions,
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Attachment: att,
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Encoding: encoding,
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})
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}
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if err := rows.Err(); err != nil {
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return nil, err
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}
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return messages, nil
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}
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func setupCacheDB(db *sql.DB) error {
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// If 'messages' table does not exist, this must be a new database
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rowsMC, err := db.Query(selectMessagesCountQuery)
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if err != nil {
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return setupNewCacheDB(db)
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}
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rowsMC.Close()
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// If 'messages' table exists, check 'schemaVersion' table
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schemaVersion := 0
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rowsSV, err := db.Query(selectSchemaVersionQuery)
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if err == nil {
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defer rowsSV.Close()
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if !rowsSV.Next() {
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return errors.New("cannot determine schema version: cache file may be corrupt")
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}
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if err := rowsSV.Scan(&schemaVersion); err != nil {
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return err
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}
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rowsSV.Close()
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}
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// Do migrations
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if schemaVersion == currentSchemaVersion {
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return nil
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} else if schemaVersion == 0 {
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return migrateFrom0(db)
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} else if schemaVersion == 1 {
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return migrateFrom1(db)
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} else if schemaVersion == 2 {
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return migrateFrom2(db)
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} else if schemaVersion == 3 {
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return migrateFrom3(db)
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} else if schemaVersion == 4 {
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return migrateFrom4(db)
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} else if schemaVersion == 5 {
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return migrateFrom5(db)
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}
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return fmt.Errorf("unexpected schema version found: %d", schemaVersion)
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}
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func setupNewCacheDB(db *sql.DB) error {
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if _, err := db.Exec(createMessagesTableQuery); err != nil {
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return err
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}
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if _, err := db.Exec(createSchemaVersionTableQuery); err != nil {
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return err
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}
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if _, err := db.Exec(insertSchemaVersion, currentSchemaVersion); err != nil {
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return err
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}
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return nil
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}
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func migrateFrom0(db *sql.DB) error {
|
|
log.Print("Migrating cache database schema: from 0 to 1")
|
|
if _, err := db.Exec(migrate0To1AlterMessagesTableQuery); err != nil {
|
|
return err
|
|
}
|
|
if _, err := db.Exec(createSchemaVersionTableQuery); err != nil {
|
|
return err
|
|
}
|
|
if _, err := db.Exec(insertSchemaVersion, 1); err != nil {
|
|
return err
|
|
}
|
|
return migrateFrom1(db)
|
|
}
|
|
|
|
func migrateFrom1(db *sql.DB) error {
|
|
log.Print("Migrating cache database schema: from 1 to 2")
|
|
if _, err := db.Exec(migrate1To2AlterMessagesTableQuery); err != nil {
|
|
return err
|
|
}
|
|
if _, err := db.Exec(updateSchemaVersion, 2); err != nil {
|
|
return err
|
|
}
|
|
return migrateFrom2(db)
|
|
}
|
|
|
|
func migrateFrom2(db *sql.DB) error {
|
|
log.Print("Migrating cache database schema: from 2 to 3")
|
|
if _, err := db.Exec(migrate2To3AlterMessagesTableQuery); err != nil {
|
|
return err
|
|
}
|
|
if _, err := db.Exec(updateSchemaVersion, 3); err != nil {
|
|
return err
|
|
}
|
|
return migrateFrom3(db)
|
|
}
|
|
|
|
func migrateFrom3(db *sql.DB) error {
|
|
log.Print("Migrating cache database schema: from 3 to 4")
|
|
if _, err := db.Exec(migrate3To4AlterMessagesTableQuery); err != nil {
|
|
return err
|
|
}
|
|
if _, err := db.Exec(updateSchemaVersion, 4); err != nil {
|
|
return err
|
|
}
|
|
return migrateFrom4(db)
|
|
}
|
|
|
|
func migrateFrom4(db *sql.DB) error {
|
|
log.Print("Migrating cache database schema: from 4 to 5")
|
|
if _, err := db.Exec(migrate4To5AlterMessagesTableQuery); err != nil {
|
|
return err
|
|
}
|
|
if _, err := db.Exec(updateSchemaVersion, 5); err != nil {
|
|
return err
|
|
}
|
|
return migrateFrom5(db)
|
|
}
|
|
|
|
func migrateFrom5(db *sql.DB) error {
|
|
log.Print("Migrating cache database schema: from 5 to 6")
|
|
if _, err := db.Exec(migrate5To6AlterMessagesTableQuery); err != nil {
|
|
return err
|
|
}
|
|
if _, err := db.Exec(updateSchemaVersion, 6); err != nil {
|
|
return err
|
|
}
|
|
return nil // Update this when a new version is added
|
|
}
|