feat(lander): support DELETE requests

include/lander.h

@@ -4,7 +4,7 @@
 #include "http_loop.h"
 #include "lsm/store.h"
 
-extern http_route lander_routes[4];
+extern http_route lander_routes[5];
 
 typedef struct lander_gctx {
   const char *data_dir;
@@ -57,4 +57,6 @@ bool lander_get_entry_lsm(event_loop_conn *conn);
 
 bool lander_post_redirect_body_to_attr(event_loop_conn *conn);
 
+bool lander_remove_entry(event_loop_conn *conn);
+
 #endif

lsm/src/store/lsm_store_disk_write.c

@@ -151,6 +151,8 @@ lsm_error lsm_entry_disk_remove(lsm_entry_handle *handle) {
     return res;
   }
 
+  fflush(store->idx.f);
+
   // Remove data file if present
   if (entry->data_len > 0) {
     if (handle->f != NULL) {

src/lander/lander.c

@@ -19,6 +19,14 @@ http_route lander_routes[] = {
         .steps_res = {http_loop_step_write_header, lander_stream_body_to_client,
                       NULL},
     },
+    {
+        .type = http_route_regex,
+        .method = http_delete,
+        .path = "^/([^/]+)$",
+        .steps = {http_loop_step_auth, lander_remove_entry, NULL},
+        .steps_res = {http_loop_step_write_header, http_loop_step_write_body,
+                      NULL},
+    },
     {
         .type = http_route_regex,
         .method = http_post,

src/lander/lander_delete.c

@@ -0,0 +1,29 @@
+#include "lander.h"
+
+bool lander_remove_entry(event_loop_conn *conn) {
+  http_loop_ctx *ctx = conn->ctx;
+  lander_ctx *c_ctx = ctx->c;
+  http_loop_gctx *gctx = ctx->g;
+  lander_gctx *c_gctx = gctx->c;
+
+  const char *key_s = &ctx->req.path[ctx->req.regex_groups[1].rm_so];
+  int key_len = ctx->req.regex_groups[1].rm_eo - ctx->req.regex_groups[1].rm_so;
+
+  lsm_str *key;
+  lsm_str_init_copy_n(&key, (char *)key_s, key_len);
+
+  switch (lsm_store_open_write(&c_ctx->entry, c_gctx->store, key)) {
+  case lsm_error_ok:
+    break;
+  case lsm_error_not_found:
+    ctx->res.status = http_not_found;
+    return true;
+  default:
+    ctx->res.status = http_internal_server_error;
+    return true;
+  }
+
+  lsm_entry_remove(c_ctx->entry);
+
+  return true;
+}