Adding upstream version 5:7.2.4.upstream/5%7.2.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 235 insertions, 0 deletions

diff --git a/tests/modules/defragtest.c b/tests/modules/defragtest.c
new file mode 100644
index 0000000..6a02a05
--- /dev/null
+++ b/tests/modules/defragtest.c
@@ -0,0 +1,235 @@
+/* A module that implements defrag callback mechanisms.
+ */
+
+#include "redismodule.h"
+#include <stdlib.h>
+
+static RedisModuleType *FragType;
+
+struct FragObject {
+    unsigned long len;
+    void **values;
+    int maxstep;
+};
+
+/* Make sure we get the expected cursor */
+unsigned long int last_set_cursor = 0;
+
+unsigned long int datatype_attempts = 0;
+unsigned long int datatype_defragged = 0;
+unsigned long int datatype_resumes = 0;
+unsigned long int datatype_wrong_cursor = 0;
+unsigned long int global_attempts = 0;
+unsigned long int global_defragged = 0;
+
+int global_strings_len = 0;
+RedisModuleString **global_strings = NULL;
+
+static void createGlobalStrings(RedisModuleCtx *ctx, int count)
+{
+    global_strings_len = count;
+    global_strings = RedisModule_Alloc(sizeof(RedisModuleString *) * count);
+
+    for (int i = 0; i < count; i++) {
+        global_strings[i] = RedisModule_CreateStringFromLongLong(ctx, i);
+    }
+}
+
+static void defragGlobalStrings(RedisModuleDefragCtx *ctx)
+{
+    for (int i = 0; i < global_strings_len; i++) {
+        RedisModuleString *new = RedisModule_DefragRedisModuleString(ctx, global_strings[i]);
+        global_attempts++;
+        if (new != NULL) {
+            global_strings[i] = new;
+            global_defragged++;
+        }
+    }
+}
+
+static void FragInfo(RedisModuleInfoCtx *ctx, int for_crash_report) {
+    REDISMODULE_NOT_USED(for_crash_report);
+
+    RedisModule_InfoAddSection(ctx, "stats");
+    RedisModule_InfoAddFieldLongLong(ctx, "datatype_attempts", datatype_attempts);
+    RedisModule_InfoAddFieldLongLong(ctx, "datatype_defragged", datatype_defragged);
+    RedisModule_InfoAddFieldLongLong(ctx, "datatype_resumes", datatype_resumes);
+    RedisModule_InfoAddFieldLongLong(ctx, "datatype_wrong_cursor", datatype_wrong_cursor);
+    RedisModule_InfoAddFieldLongLong(ctx, "global_attempts", global_attempts);
+    RedisModule_InfoAddFieldLongLong(ctx, "global_defragged", global_defragged);
+}
+
+struct FragObject *createFragObject(unsigned long len, unsigned long size, int maxstep) {
+    struct FragObject *o = RedisModule_Alloc(sizeof(*o));
+    o->len = len;
+    o->values = RedisModule_Alloc(sizeof(RedisModuleString*) * len);
+    o->maxstep = maxstep;
+
+    for (unsigned long i = 0; i < len; i++) {
+        o->values[i] = RedisModule_Calloc(1, size);
+    }
+
+    return o;
+}
+
+/* FRAG.RESETSTATS */
+static int fragResetStatsCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+    REDISMODULE_NOT_USED(argv);
+    REDISMODULE_NOT_USED(argc);
+
+    datatype_attempts = 0;
+    datatype_defragged = 0;
+    datatype_resumes = 0;
+    datatype_wrong_cursor = 0;
+    global_attempts = 0;
+    global_defragged = 0;
+
+    RedisModule_ReplyWithSimpleString(ctx, "OK");
+    return REDISMODULE_OK;
+}
+
+/* FRAG.CREATE key len size maxstep */
+static int fragCreateCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+    if (argc != 5)
+        return RedisModule_WrongArity(ctx);
+
+    RedisModuleKey *key = RedisModule_OpenKey(ctx,argv[1],
+                                              REDISMODULE_READ|REDISMODULE_WRITE);
+    int type = RedisModule_KeyType(key);
+    if (type != REDISMODULE_KEYTYPE_EMPTY)
+    {
+        return RedisModule_ReplyWithError(ctx, "ERR key exists");
+    }
+
+    long long len;
+    if ((RedisModule_StringToLongLong(argv[2], &len) != REDISMODULE_OK)) {
+        return RedisModule_ReplyWithError(ctx, "ERR invalid len");
+    }
+
+    long long size;
+    if ((RedisModule_StringToLongLong(argv[3], &size) != REDISMODULE_OK)) {
+        return RedisModule_ReplyWithError(ctx, "ERR invalid size");
+    }
+
+    long long maxstep;
+    if ((RedisModule_StringToLongLong(argv[4], &maxstep) != REDISMODULE_OK)) {
+        return RedisModule_ReplyWithError(ctx, "ERR invalid maxstep");
+    }
+
+    struct FragObject *o = createFragObject(len, size, maxstep);
+    RedisModule_ModuleTypeSetValue(key, FragType, o);
+    RedisModule_ReplyWithSimpleString(ctx, "OK");
+    RedisModule_CloseKey(key);
+
+    return REDISMODULE_OK;
+}
+
+void FragFree(void *value) {
+    struct FragObject *o = value;
+
+    for (unsigned long i = 0; i < o->len; i++)
+        RedisModule_Free(o->values[i]);
+    RedisModule_Free(o->values);
+    RedisModule_Free(o);
+}
+
+size_t FragFreeEffort(RedisModuleString *key, const void *value) {
+    REDISMODULE_NOT_USED(key);
+
+    const struct FragObject *o = value;
+    return o->len;
+}
+
+int FragDefrag(RedisModuleDefragCtx *ctx, RedisModuleString *key, void **value) {
+    REDISMODULE_NOT_USED(key);
+    unsigned long i = 0;
+    int steps = 0;
+
+    int dbid = RedisModule_GetDbIdFromDefragCtx(ctx);
+    RedisModule_Assert(dbid != -1);
+
+    /* Attempt to get cursor, validate it's what we're exepcting */
+    if (RedisModule_DefragCursorGet(ctx, &i) == REDISMODULE_OK) {
+        if (i > 0) datatype_resumes++;
+
+        /* Validate we're expecting this cursor */
+        if (i != last_set_cursor) datatype_wrong_cursor++;
+    } else {
+        if (last_set_cursor != 0) datatype_wrong_cursor++;
+    }
+
+    /* Attempt to defrag the object itself */
+    datatype_attempts++;
+    struct FragObject *o = RedisModule_DefragAlloc(ctx, *value);
+    if (o == NULL) {
+        /* Not defragged */
+        o = *value;
+    } else {
+        /* Defragged */
+        *value = o;
+        datatype_defragged++;
+    }
+
+    /* Deep defrag now */
+    for (; i < o->len; i++) {
+        datatype_attempts++;
+        void *new = RedisModule_DefragAlloc(ctx, o->values[i]);
+        if (new) {
+            o->values[i] = new;
+            datatype_defragged++;
+        }
+
+        if ((o->maxstep && ++steps > o->maxstep) ||
+            ((i % 64 == 0) && RedisModule_DefragShouldStop(ctx)))
+        {
+            RedisModule_DefragCursorSet(ctx, i);
+            last_set_cursor = i;
+            return 1;
+        }
+    }
+
+    last_set_cursor = 0;
+    return 0;
+}
+
+int RedisModule_OnLoad(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+    REDISMODULE_NOT_USED(argv);
+    REDISMODULE_NOT_USED(argc);
+
+    if (RedisModule_Init(ctx, "defragtest", 1, REDISMODULE_APIVER_1)
+        == REDISMODULE_ERR) return REDISMODULE_ERR;
+
+    if (RedisModule_GetTypeMethodVersion() < REDISMODULE_TYPE_METHOD_VERSION) {
+        return REDISMODULE_ERR;
+    }
+
+    long long glen;
+    if (argc != 1 || RedisModule_StringToLongLong(argv[0], &glen) == REDISMODULE_ERR) {
+        return REDISMODULE_ERR;
+    }
+
+    createGlobalStrings(ctx, glen);
+
+    RedisModuleTypeMethods tm = {
+            .version = REDISMODULE_TYPE_METHOD_VERSION,
+            .free = FragFree,
+            .free_effort = FragFreeEffort,
+            .defrag = FragDefrag
+    };
+
+    FragType = RedisModule_CreateDataType(ctx, "frag_type", 0, &tm);
+    if (FragType == NULL) return REDISMODULE_ERR;
+
+    if (RedisModule_CreateCommand(ctx, "frag.create",
+                                  fragCreateCommand, "write deny-oom", 1, 1, 1) == REDISMODULE_ERR)
+        return REDISMODULE_ERR;
+
+    if (RedisModule_CreateCommand(ctx, "frag.resetstats",
+                                  fragResetStatsCommand, "write deny-oom", 1, 1, 1) == REDISMODULE_ERR)
+        return REDISMODULE_ERR;
+
+    RedisModule_RegisterInfoFunc(ctx, FragInfo);
+    RedisModule_RegisterDefragFunc(ctx, defragGlobalStrings);
+
+    return REDISMODULE_OK;
+}