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ssb: Add support for registering for blob added notifications similarly to messages. I want to use this to load images on the fly.

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Cory McWilliams
2025-08-13 18:26:42 -04:00
parent 00623cea09
commit b5f0a0c4f7
4 changed files with 127 additions and 0 deletions
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67
src/ssb.c
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@@ -133,6 +133,15 @@ typedef struct _tf_ssb_message_added_callback_node_t
tf_ssb_message_added_callback_node_t* next;
} tf_ssb_message_added_callback_node_t;
typedef struct _tf_ssb_blob_stored_callback_node_t tf_ssb_blob_stored_callback_node_t;
typedef struct _tf_ssb_blob_stored_callback_node_t
{
tf_ssb_blob_stored_callback_t* callback;
tf_ssb_callback_cleanup_t* cleanup;
void* user_data;
tf_ssb_blob_stored_callback_node_t* next;
} tf_ssb_blob_stored_callback_node_t;
typedef struct _tf_ssb_blob_want_added_callback_node_t tf_ssb_blob_want_added_callback_node_t;
typedef struct _tf_ssb_blob_want_added_callback_node_t
{
@@ -235,6 +244,9 @@ typedef struct _tf_ssb_t
tf_ssb_message_added_callback_node_t* message_added;
int message_added_count;
tf_ssb_blob_stored_callback_node_t* blob_stored;
int blob_stored_count;
tf_ssb_blob_want_added_callback_node_t* blob_want_added;
int blob_want_added_count;
@@ -2741,6 +2753,17 @@ void tf_ssb_destroy(tf_ssb_t* ssb)
}
tf_free(node);
}
while (ssb->blob_stored)
{
tf_ssb_blob_stored_callback_node_t* node = ssb->blob_stored;
ssb->blob_stored = node->next;
ssb->blob_stored_count--;
if (node->cleanup)
{
node->cleanup(ssb, node->user_data);
}
tf_free(node);
}
while (ssb->blob_want_added)
{
tf_ssb_blob_want_added_callback_node_t* node = ssb->blob_want_added;
@@ -3960,9 +3983,53 @@ void tf_ssb_remove_message_added_callback(tf_ssb_t* ssb, tf_ssb_message_added_ca
}
}
void tf_ssb_add_blob_stored_callback(tf_ssb_t* ssb, tf_ssb_blob_stored_callback_t* callback, void (*cleanup)(tf_ssb_t* ssb, void* user_data), void* user_data)
{
tf_ssb_blob_stored_callback_node_t* node = tf_malloc(sizeof(tf_ssb_blob_stored_callback_node_t));
*node = (tf_ssb_blob_stored_callback_node_t) {
.callback = callback,
.cleanup = cleanup,
.user_data = user_data,
.next = ssb->blob_stored,
};
ssb->blob_stored = node;
ssb->blob_stored_count++;
}
void tf_ssb_remove_blob_stored_callback(tf_ssb_t* ssb, tf_ssb_blob_stored_callback_t* callback, void* user_data)
{
tf_ssb_blob_stored_callback_node_t** it = &ssb->blob_stored;
while (*it)
{
if ((*it)->callback == callback && (*it)->user_data == user_data)
{
tf_ssb_blob_stored_callback_node_t* node = *it;
*it = node->next;
ssb->blob_stored_count--;
if (node->cleanup)
{
node->cleanup(ssb, node->user_data);
}
tf_free(node);
}
else
{
it = &(*it)->next;
}
}
}
void tf_ssb_notify_blob_stored(tf_ssb_t* ssb, const char* id)
{
tf_ssb_blob_stored_callback_node_t* next = NULL;
ssb->blobs_stored++;
for (tf_ssb_blob_stored_callback_node_t* node = ssb->blob_stored; node; node = next)
{
next = node->next;
tf_trace_begin(ssb->trace, "blob stored callback");
node->callback(ssb, id, node->user_data);
tf_trace_end(ssb->trace);
}
}
void tf_ssb_notify_message_added(tf_ssb_t* ssb, const char* author, int32_t sequence, const char* id, JSValue message_keys)