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foundationdb/fdbcli/TenantCommands.actor.cpp

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/*
* TenantCommands.actor.cpp
*
* This source file is part of the FoundationDB open source project
*
* Copyright 2013-2022 Apple Inc. and the FoundationDB project authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "fdbcli/fdbcli.actor.h"
#include "fdbclient/FDBOptions.g.h"
#include "fdbclient/IClientApi.h"
#include "fdbclient/Knobs.h"
#include "fdbclient/ManagementAPI.actor.h"
#include "fdbclient/Schemas.h"
#include "flow/Arena.h"
#include "flow/FastRef.h"
#include "flow/ThreadHelper.actor.h"
#include "flow/actorcompiler.h" // This must be the last #include.
namespace fdb_cli {
const KeyRangeRef tenantSpecialKeyRange(LiteralStringRef("\xff\xff/management/tenant_map/"),
LiteralStringRef("\xff\xff/management/tenant_map0"));
// createtenant command
ACTOR Future<bool> createTenantCommandActor(Reference<IDatabase> db, std::vector<StringRef> tokens) {
if (tokens.size() != 2) {
printUsage(tokens[0]);
return false;
}
state Key tenantNameKey = fdb_cli::tenantSpecialKeyRange.begin.withSuffix(tokens[1]);
state Reference<ITransaction> tr = db->createTransaction();
state bool doneExistenceCheck = false;
loop {
tr->setOption(FDBTransactionOptions::SPECIAL_KEY_SPACE_ENABLE_WRITES);
try {
if (!doneExistenceCheck) {
// Hold the reference to the standalone's memory
state ThreadFuture<Optional<Value>> existingTenantFuture = tr->get(tenantNameKey);
Optional<Value> existingTenant = wait(safeThreadFutureToFuture(existingTenantFuture));
if (existingTenant.present()) {
throw tenant_already_exists();
}
doneExistenceCheck = true;
}
tr->set(tenantNameKey, ValueRef());
wait(safeThreadFutureToFuture(tr->commit()));
break;
} catch (Error& e) {
state Error err(e);
if (e.code() == error_code_special_keys_api_failure) {
std::string errorMsgStr = wait(fdb_cli::getSpecialKeysFailureErrorMessage(tr));
fprintf(stderr, "ERROR: %s\n", errorMsgStr.c_str());
return false;
}
wait(safeThreadFutureToFuture(tr->onError(err)));
}
}
printf("The tenant `%s' has been created\n", printable(tokens[1]).c_str());
return true;
}
CommandFactory createTenantFactory("createtenant",
CommandHelp("createtenant <TENANT_NAME>",
"creates a new tenant in the cluster",
"Creates a new tenant in the cluster with the specified name."));
// deletetenant command
ACTOR Future<bool> deleteTenantCommandActor(Reference<IDatabase> db, std::vector<StringRef> tokens) {
if (tokens.size() != 2) {
printUsage(tokens[0]);
return false;
}
state Key tenantNameKey = fdb_cli::tenantSpecialKeyRange.begin.withSuffix(tokens[1]);
state Reference<ITransaction> tr = db->createTransaction();
state bool doneExistenceCheck = false;
loop {
tr->setOption(FDBTransactionOptions::SPECIAL_KEY_SPACE_ENABLE_WRITES);
try {
if (!doneExistenceCheck) {
// Hold the reference to the standalone's memory
state ThreadFuture<Optional<Value>> existingTenantFuture = tr->get(tenantNameKey);
Optional<Value> existingTenant = wait(safeThreadFutureToFuture(existingTenantFuture));
if (!existingTenant.present()) {
throw tenant_not_found();
}
doneExistenceCheck = true;
}
tr->clear(tenantNameKey);
wait(safeThreadFutureToFuture(tr->commit()));
break;
} catch (Error& e) {
state Error err(e);
if (e.code() == error_code_special_keys_api_failure) {
std::string errorMsgStr = wait(fdb_cli::getSpecialKeysFailureErrorMessage(tr));
fprintf(stderr, "ERROR: %s\n", errorMsgStr.c_str());
return false;
}
wait(safeThreadFutureToFuture(tr->onError(err)));
}
}
printf("The tenant `%s' has been deleted\n", printable(tokens[1]).c_str());
return true;
}
CommandFactory deleteTenantFactory(
"deletetenant",
CommandHelp(
"deletetenant <TENANT_NAME>",
"deletes a tenant from the cluster",
"Deletes a tenant from the cluster. Deletion will be allowed only if the specified tenant contains no data."));
// listtenants command
ACTOR Future<bool> listTenantsCommandActor(Reference<IDatabase> db, std::vector<StringRef> tokens) {
if (tokens.size() > 4) {
printUsage(tokens[0]);
return false;
}
StringRef beginTenant = ""_sr;
StringRef endTenant = "\xff\xff"_sr;
state int limit = 100;
if (tokens.size() >= 2) {
beginTenant = tokens[1];
}
if (tokens.size() >= 3) {
endTenant = tokens[2];
if (endTenant <= beginTenant) {
fprintf(stderr, "ERROR: end must be larger than begin");
return false;
}
}
if (tokens.size() == 4) {
int n = 0;
if (sscanf(tokens[3].toString().c_str(), "%d%n", &limit, &n) != 1 || n != tokens[3].size()) {
fprintf(stderr, "ERROR: invalid limit %s\n", tokens[3].toString().c_str());
return false;
}
}
state Key beginTenantKey = fdb_cli::tenantSpecialKeyRange.begin.withSuffix(beginTenant);
state Key endTenantKey = fdb_cli::tenantSpecialKeyRange.begin.withSuffix(endTenant);
state Reference<ITransaction> tr = db->createTransaction();
loop {
try {
// Hold the reference to the standalone's memory
state ThreadFuture<RangeResult> kvsFuture =
tr->getRange(firstGreaterOrEqual(beginTenantKey), firstGreaterOrEqual(endTenantKey), limit);
RangeResult tenants = wait(safeThreadFutureToFuture(kvsFuture));
if (tenants.empty()) {
if (tokens.size() == 1) {
printf("The cluster has no tenants\n");
} else {
printf("The cluster has no tenants in the specified range\n");
}
}
int index = 0;
for (auto tenant : tenants) {
printf(" %d. %s\n",
++index,
printable(tenant.key.removePrefix(fdb_cli::tenantSpecialKeyRange.begin)).c_str());
}
return true;
} catch (Error& e) {
state Error err(e);
if (e.code() == error_code_special_keys_api_failure) {
std::string errorMsgStr = wait(fdb_cli::getSpecialKeysFailureErrorMessage(tr));
fprintf(stderr, "ERROR: %s\n", errorMsgStr.c_str());
return false;
}
wait(safeThreadFutureToFuture(tr->onError(err)));
}
}
}
CommandFactory listTenantsFactory(
"listtenants",
CommandHelp("listtenants [BEGIN] [END] [LIMIT]",
"print a list of tenants in the cluster",
"Print a list of tenants in the cluster. Only tenants in the range [BEGIN] - [END] will be printed. "
"The number of tenants to print can be specified using the [LIMIT] parameter, which defaults to 100."));
// gettenant command
ACTOR Future<bool> getTenantCommandActor(Reference<IDatabase> db, std::vector<StringRef> tokens) {
if (tokens.size() != 2) {
printUsage(tokens[0]);
return false;
}
state Key tenantNameKey = fdb_cli::tenantSpecialKeyRange.begin.withSuffix(tokens[1]);
state Reference<ITransaction> tr = db->createTransaction();
loop {
try {
// Hold the reference to the standalone's memory
state ThreadFuture<Optional<Value>> tenantFuture = tr->get(tenantNameKey);
Optional<Value> tenant = wait(safeThreadFutureToFuture(tenantFuture));
if (!tenant.present()) {
throw tenant_not_found();
}
json_spirit::mValue jsonObject;
json_spirit::read_string(tenant.get().toString(), jsonObject);
JSONDoc doc(jsonObject);
int64_t id;
std::string prefix;
doc.get("id", id);
doc.get("prefix", prefix);
printf(" id: %" PRId64 "\n", id);
printf(" prefix: %s\n", printable(prefix).c_str());
return true;
} catch (Error& e) {
state Error err(e);
if (e.code() == error_code_special_keys_api_failure) {
std::string errorMsgStr = wait(fdb_cli::getSpecialKeysFailureErrorMessage(tr));
fprintf(stderr, "ERROR: %s\n", errorMsgStr.c_str());
return false;
}
wait(safeThreadFutureToFuture(tr->onError(err)));
}
}
}
CommandFactory getTenantFactory("gettenant",
CommandHelp("gettenant <TENANT_NAME>",
"prints the metadata for a tenant",
"Prints the metadata for a tenant."));
} // namespace fdb_cli
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