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https://github.com/neondatabase/neon.git
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6c6de6382a
This makes it possible for the compiler to validate that a match block matched all PostgreSQL versions we support. ## Problem We did not have a complete picture about which places we had to test against PG versions, and what format these versions were: The full PG version ID format (Major/minor/bugfix `MMmmbb`) as transfered in protocol messages, or only the Major release version (`MM`). This meant type confusion was rampant. With this change, it becomes easier to develop new version-dependent features, by making type and niche confusion impossible. ## Summary of changes Every use of `pg_version` is now typed as either `PgVersionId` (u32, valued in decimal `MMmmbb`) or PgMajorVersion (an enum, with a value for every major version we support, serialized and stored like a u32 with the value of that major version) --------- Co-authored-by: Arpad Müller <arpad-m@users.noreply.github.com>
60 lines
1.7 KiB
Rust
60 lines
1.7 KiB
Rust
use crate::PgMajorVersion;
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pub const MY_PGVERSION: PgMajorVersion = PgMajorVersion::PG17;
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pub const XACT_XINFO_HAS_DROPPED_STATS: u32 = 1u32 << 8;
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pub const XLOG_DBASE_CREATE_FILE_COPY: u8 = 0x00;
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pub const XLOG_DBASE_CREATE_WAL_LOG: u8 = 0x10;
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pub const XLOG_DBASE_DROP: u8 = 0x20;
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pub const BKPIMAGE_APPLY: u8 = 0x02; /* page image should be restored during replay */
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pub const BKPIMAGE_COMPRESS_PGLZ: u8 = 0x04; /* page image is compressed */
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pub const BKPIMAGE_COMPRESS_LZ4: u8 = 0x08; /* page image is compressed */
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pub const BKPIMAGE_COMPRESS_ZSTD: u8 = 0x10; /* page image is compressed */
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pub const SIZEOF_RELMAPFILE: usize = 524; /* sizeof(RelMapFile) in relmapper.c */
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// List of subdirectories inside pgdata.
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// Copied from src/bin/initdb/initdb.c
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pub const PGDATA_SUBDIRS: [&str; 23] = [
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"global",
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"pg_wal/archive_status",
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"pg_wal/summaries",
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"pg_commit_ts",
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"pg_dynshmem",
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"pg_notify",
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"pg_serial",
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"pg_snapshots",
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"pg_subtrans",
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"pg_twophase",
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"pg_multixact",
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"pg_multixact/members",
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"pg_multixact/offsets",
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"base",
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"base/1",
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"pg_replslot",
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"pg_tblspc",
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"pg_stat",
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"pg_stat_tmp",
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"pg_xact",
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"pg_logical",
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"pg_logical/snapshots",
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"pg_logical/mappings",
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];
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pub fn bkpimg_is_compressed(bimg_info: u8) -> bool {
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const ANY_COMPRESS_FLAG: u8 = BKPIMAGE_COMPRESS_PGLZ | BKPIMAGE_COMPRESS_LZ4 | BKPIMAGE_COMPRESS_ZSTD;
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(bimg_info & ANY_COMPRESS_FLAG) != 0
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}
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pub const XLOG_HEAP2_PRUNE_ON_ACCESS: u8 = 0x10;
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pub const XLOG_HEAP2_PRUNE_VACUUM_SCAN: u8 = 0x20;
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pub const XLOG_HEAP2_PRUNE_VACUUM_CLEANUP: u8 = 0x30;
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pub const XLOG_OVERWRITE_CONTRECORD: u8 = 0xD0;
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pub const XLOG_CHECKPOINT_REDO: u8 = 0xE0;
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