2434577541

Committed 07 Apr 2026 01:24PM UTC coverage: 75.855% (+0.02%) from 75.834%

Build # 2434577541

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push

gitlab-ci

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web-flow

Commit Message

Merge pull request #1932 from vpodzime/5.0.x-renovate_mender-artifact

[5.0.x] ci: Add renovate CI job for updating mender-artifact version

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79.6

/src/mender-update/deployments/deployments.cpp

// Copyright 2023 Northern.tech AS
//
//    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 <mender-update/deployments.hpp>

#include <algorithm>
#include <sstream>
#include <string>

#include <api/api.hpp>
#include <api/client.hpp>
#include <common/common.hpp>
#include <common/error.hpp>
#include <common/events.hpp>
#include <common/expected.hpp>
#include <common/http.hpp>
#include <common/io.hpp>
#include <common/json.hpp>
#include <common/log.hpp>
#include <common/optional.hpp>
#include <common/path.hpp>
#include <mender-update/context.hpp>

namespace mender {
namespace update {
namespace deployments {

using namespace std;

namespace api = mender::api;
namespace common = mender::common;
namespace context = mender::update::context;
namespace error = mender::common::error;
namespace events = mender::common::events;
namespace expected = mender::common::expected;
namespace http = mender::common::http;
namespace io = mender::common::io;
namespace json = mender::common::json;
namespace log = mender::common::log;
namespace path = mender::common::path;

using ExpectedOffset = expected::expected<ifstream::off_type, error::Error>;

const DeploymentsErrorCategoryClass DeploymentsErrorCategory;

const char *DeploymentsErrorCategoryClass::name() const noexcept {
        return "DeploymentsErrorCategory";
}

string DeploymentsErrorCategoryClass::message(int code) const {
        switch (code) {
        case NoError:
                return "Success";
        case InvalidDataError:
                return "Invalid data error";
        case BadResponseError:
                return "Bad response error";
        case DeploymentAbortedError:
                return "Deployment was aborted on the server";
        case TooManyRequestsError:
                return "Too many requests";
        case RequestBodyTooLargeError:
                return "Request body too large";
        }
        assert(false);
        return "Unknown";
}

error::Error MakeError(DeploymentsErrorCode code, const string &msg) {
        return error::Error(error_condition(code, DeploymentsErrorCategory), msg);
}

static const string check_updates_v1_uri = "/api/devices/v1/deployments/device/deployments/next";
static const string check_updates_v2_uri = "/api/devices/v2/deployments/device/deployments/next";

error::Error DeploymentClient::CheckNewDeployments(
        context::MenderContext &ctx, api::Client &client, CheckUpdatesAPIResponseHandler api_handler) {
        auto ex_dev_type = ctx.GetDeviceType();
        if (!ex_dev_type) {
                return ex_dev_type.error();
        }
        string device_type = ex_dev_type.value();

        auto ex_provides = ctx.LoadProvides();
        if (!ex_provides) {
                return ex_provides.error();
        }
        auto provides = ex_provides.value();
        if (provides.find("artifact_name") == provides.end()) {
                return MakeError(InvalidDataError, "Missing artifact name data");
        }

        stringstream ss;
        ss << R"({"device_provides":{)";
        ss << R"("device_type":")";
        ss << json::EscapeString(device_type);

        for (const auto &kv : provides) {
                ss << "\",\"" + json::EscapeString(kv.first) + "\":\"";
                ss << json::EscapeString(kv.second);
        }

        ss << R"("}})";

        string v2_payload = ss.str();
        log::Debug("deployments/next v2 payload " + v2_payload);
        http::BodyGenerator payload_gen = [v2_payload]() {
                return make_shared<io::StringReader>(v2_payload);
        };

        auto v2_req = make_shared<api::APIRequest>();
        v2_req->SetPath(check_updates_v2_uri);
        v2_req->SetMethod(http::Method::POST);
        v2_req->SetHeader("Content-Type", "application/json");
        v2_req->SetHeader("Content-Length", to_string(v2_payload.size()));
        v2_req->SetHeader("Accept", "application/json");
        v2_req->SetBodyGenerator(payload_gen);

        string v1_args = "artifact_name=" + http::URLEncode(provides["artifact_name"])
                                         + "&device_type=" + http::URLEncode(device_type);
        auto v1_req = make_shared<api::APIRequest>();
        v1_req->SetPath(check_updates_v1_uri + "?" + v1_args);
        v1_req->SetMethod(http::Method::GET);
        v1_req->SetHeader("Accept", "application/json");

        auto received_body = make_shared<vector<uint8_t>>();
        auto handle_data = [received_body, api_handler](unsigned status) {
                if (status == http::StatusOK) {
                        auto ex_j = json::Load(common::StringFromByteVector(*received_body));
                        if (ex_j) {
                                CheckUpdatesAPIResponse response {optional<json::Json> {ex_j.value()}};
                                api_handler(response);
                        } else {
                                api_handler(expected::unexpected(ex_j.error()));
                        }
                } else if (status == http::StatusNoContent) {
                        api_handler(CheckUpdatesAPIResponse {nullopt});
                } else {
                        log::Warning(
                                "DeploymentClient::CheckNewDeployments - received unhandled http response: "
                                + to_string(status));
                        api_handler(expected::unexpected(MakeError(
                                DeploymentAbortedError, "received unhandled HTTP response: " + to_string(status))));
                }
        };

        http::ResponseHandler header_handler =
                [received_body, api_handler](http::ExpectedIncomingResponsePtr exp_resp) {
                        if (!exp_resp) {
                                log::Error("Request to check new deployments failed: " + exp_resp.error().message);
                                CheckUpdatesAPIResponse response = expected::unexpected(exp_resp.error());
                                api_handler(response);
                                return;
                        }

                        auto resp = exp_resp.value();
                        received_body->clear();
                        auto body_writer = make_shared<io::ByteWriter>(received_body);
                        body_writer->SetUnlimited(true);
                        resp->SetBodyWriter(body_writer);
                };

        http::ResponseHandler v1_body_handler =
                [received_body, api_handler, handle_data](http::ExpectedIncomingResponsePtr exp_resp) {
                        if (!exp_resp) {
                                log::Error("Request to check new deployments failed: " + exp_resp.error().message);
                                CheckUpdatesAPIResponse response = expected::unexpected(exp_resp.error());
                                api_handler(response);
                                return;
                        }
                        auto resp = exp_resp.value();
                        auto status = resp->GetStatusCode();
                        if ((status == http::StatusOK) || (status == http::StatusNoContent)) {
                                handle_data(status);
                        } else {
                                auto ex_err_msg = api::ErrorMsgFromErrorResponse(*received_body);
                                string err_str;
                                if (ex_err_msg) {
                                        err_str = ex_err_msg.value();
                                } else {
                                        err_str = resp->GetStatusMessage();
                                }
                                api_handler(expected::unexpected(MakeError(
                                        BadResponseError,
                                        "Got unexpected response " + to_string(status) + ": " + err_str)));
                        }
                };

        http::ResponseHandler v2_body_handler = [received_body,
                                                                                         v1_req,
                                                                                         header_handler,
                                                                                         v1_body_handler,
                                                                                         api_handler,
                                                                                         handle_data,
                                                                                         &client](http::ExpectedIncomingResponsePtr exp_resp) {
                if (!exp_resp) {
                        log::Error("Request to check new deployments failed: " + exp_resp.error().message);
                        CheckUpdatesAPIResponse response = expected::unexpected(exp_resp.error());
                        api_handler(response);
                        return;
                }
                auto resp = exp_resp.value();
                auto status = resp->GetStatusCode();
                if ((status == http::StatusOK) || (status == http::StatusNoContent)) {
                        handle_data(status);
                } else if (status == http::StatusNotFound) {
                        log::Debug(
                                "POST request to v2 version of the deployments API failed, falling back to v1 version and GET");
                        auto err = client.AsyncCall(v1_req, header_handler, v1_body_handler);
                        if (err != error::NoError) {
                                api_handler(expected::unexpected(err.WithContext("While calling v1 endpoint")));
                        }
                } else {
                        auto ex_err_msg = api::ErrorMsgFromErrorResponse(*received_body);
                        string err_str;
                        if (ex_err_msg) {
                                err_str = ex_err_msg.value();
                        } else {
                                err_str = resp->GetStatusMessage();
                        }
                        api_handler(expected::unexpected(MakeError(
                                BadResponseError,
                                "Got unexpected response " + to_string(status) + ": " + err_str)));
                }
        };

        return client.AsyncCall(v2_req, header_handler, v2_body_handler);
}

static const string deployment_status_strings[static_cast<int>(DeploymentStatus::End_) + 1] = {
        "installing",
        "pause_before_installing",
        "downloading",
        "pause_before_rebooting",
        "rebooting",
        "pause_before_committing",
        "success",
        "failure",
        "already-installed"};

static const string deployments_uri_prefix = "/api/devices/v1/deployments/device/deployments";
static const string status_uri_suffix = "/status";

string DeploymentStatusString(DeploymentStatus status) {
        return deployment_status_strings[static_cast<int>(status)];
}

error::Error DeploymentClient::PushStatus(
        const string &deployment_id,
        DeploymentStatus status,
        const string &substate,
        api::Client &client,
        StatusAPIResponseHandler api_handler) {
        // Cannot push a status update without a deployment ID
        AssertOrReturnError(deployment_id != "");
        string payload = R"({"status":")" + DeploymentStatusString(status) + "\"";
        if (substate != "") {
                payload += R"(,"substate":")" + json::EscapeString(substate) + "\"}";
        } else {
                payload += "}";
        }
        http::BodyGenerator payload_gen = [payload]() {
                return make_shared<io::StringReader>(payload);
        };

        auto req = make_shared<api::APIRequest>();
        req->SetPath(http::JoinUrl(deployments_uri_prefix, deployment_id, status_uri_suffix));
        req->SetMethod(http::Method::PUT);
        req->SetHeader("Content-Type", "application/json");
        req->SetHeader("Content-Length", to_string(payload.size()));
        req->SetHeader("Accept", "application/json");
        req->SetBodyGenerator(payload_gen);

        auto received_body = make_shared<vector<uint8_t>>();
        return client.AsyncCall(
                req,
                [received_body, api_handler](http::ExpectedIncomingResponsePtr exp_resp) {
                        if (!exp_resp) {
                                log::Error("Request to push status data failed: " + exp_resp.error().message);
                                api_handler(exp_resp.error());
                                return;
                        }

                        auto body_writer = make_shared<io::ByteWriter>(received_body);
                        auto resp = exp_resp.value();
                        auto content_length = resp->GetHeader("Content-Length");
                        if (!content_length) {
                                log::Debug(
                                        "Failed to get content length from the deployment status API response headers: "
                                        + content_length.error().String());
                                body_writer->SetUnlimited(true);
                        } else {
                                auto ex_len = common::StringTo<size_t>(content_length.value());
                                if (!ex_len) {
                                        log::Error(
                                                "Failed to convert the content length from the deployment status API response headers to an integer: "
                                                + ex_len.error().String());
                                        body_writer->SetUnlimited(true);
                                } else {
                                        received_body->resize(ex_len.value());
                                }
                        }
                        resp->SetBodyWriter(body_writer);
                },
                [received_body, api_handler](http::ExpectedIncomingResponsePtr exp_resp) {
                        if (!exp_resp) {
                                log::Error("Request to push status data failed: " + exp_resp.error().message);
                                api_handler(exp_resp.error());
                                return;
                        }

                        auto resp = exp_resp.value();
                        auto status = resp->GetStatusCode();
                        if (status == http::StatusNoContent) {
                                api_handler(error::NoError);
                        } else if (status == http::StatusConflict) {
                                api_handler(
                                        MakeError(DeploymentAbortedError, "Could not send status update to server"));
                        } else {
                                auto ex_err_msg = api::ErrorMsgFromErrorResponse(*received_body);
                                string err_str;
                                if (ex_err_msg) {
                                        err_str = ex_err_msg.value();
                                } else {
                                        err_str = resp->GetStatusMessage();
                                }
                                api_handler(MakeError(
                                        BadResponseError,
                                        "Got unexpected response " + to_string(status)
                                                + " from status API: " + err_str));
                        }
                });
}

using mender::common::expected::ExpectedSize;

static ExpectedSize GetLogFileDataSize(const string &path) {
        auto ex_istr = io::OpenIfstream(path);
        if (!ex_istr) {
                return expected::unexpected(ex_istr.error());
        }
        auto istr = std::move(ex_istr.value());

        // We want the size of the actual data without a potential trailing
        // comma. So let's seek one byte before the end of file, check if the last
        // byte is a comma and return the appropriate number.
        istr.seekg(-1, ios_base::end);
        int c = istr.get();
        if (c == ',') {
                return istr.tellg() - static_cast<ifstream::off_type>(1);
        } else {
                return istr.tellg();
        }
}

// Find the beginning of the next log message JSON after offset
static ExpectedOffset FindNextMsgAfter(const string &path, ifstream::off_type offset) {
        auto ex_is = io::OpenIfstream(path);
        if (!ex_is) {
                return expected::unexpected(ex_is.error());
        }
        auto is = std::move(ex_is.value());
        is.seekg(offset);
        int io_errno = errno;
        if (!is) {
                return expected::unexpected(error::Error(
                        generic_category().default_error_condition(io_errno),
                        "Failed to seek to truncated logs offset in '" + path + "'"));
        }

        // Now that we have seeked to the starting offset, we need to find the next
        // boundary between JSON log entries.
        const string pattern = R"(},{"timestamp")";
        string buf(1024, '\0');
        while (is.read(buf.data(), 1024)) {
                // make sure we don't work with some stale data from the previous read()
                buf.resize(is.gcount());

                // XXX: This is not perfect as it can fail to find the next boundary if
                //      it's split between the end of the current buffer contents and
                //      the start of the next chunk read from the file. However, with a
                //      1K buffer, this is very unlikely to happen and even if it does
                //      happen, the logs will just be trimmed a bit more than
                //      necessary. For the sake of incomparably simpler code that is
                //      easy to test.
                auto pos = buf.find(pattern);
                if (pos != string::npos) {
                        offset += pos + 2; // skip "},"
                        break;
                }
                offset += buf.size();
        }
        io_errno = errno;
        if (!is && !is.eof()) {
                return expected::unexpected(error::Error(
                        generic_category().default_error_condition(io_errno),
                        "Failed to read logs from '" + path + "'"));
        }

        // In case we read the whole rest of the file not finding the next JSON log
        // entry, there must be something really wrong with the log and it should be
        // fully skipped. The user will still get the information that the log was
        // truncated and they will still have the full log on the device.
        return offset;
}

const vector<uint8_t> JsonLogMessagesReader::header_ = {
        '{', '"', 'm', 'e', 's', 's', 'a', 'g', 'e', 's', '"', ':', '['};
const vector<uint8_t> JsonLogMessagesReader::closing_ = {']', '}'};
const string JsonLogMessagesReader::default_tstamp_ = "1970-01-01T00:00:00.000000000Z";
const string JsonLogMessagesReader::bad_data_msg_tmpl_ =
        R"d({"timestamp": "1970-01-01T00:00:00.000000000Z", "level": "ERROR", "message": "(THE ORIGINAL LOGS CONTAINED INVALID ENTRIES)"},)d";
const string JsonLogMessagesReader::too_much_data_msg_tmpl_ =
        R"d({"timestamp": "1970-01-01T00:00:00.000000000Z", "level": "WARNING", "message": "(THE ORIGINAL LOGS WERE TOO BIG, THIS LOG IS TRUNCATED. The full log can be found on the device)"},)d";

JsonLogMessagesReader::~JsonLogMessagesReader() {
        reader_.reset();
        if (!sanitized_fpath_.empty() && path::FileExists(sanitized_fpath_)) {
                auto del_err = path::FileDelete(sanitized_fpath_);
                if (del_err != error::NoError) {
                        log::Error("Failed to delete auxiliary logs file: " + del_err.String());
                }
        }
        sanitized_fpath_.erase();
}

static error::Error DoSanitizeLogs(
        const string &orig_path, const string &new_path, bool &all_valid, string &first_tstamp) {
        auto ex_ifs = io::OpenIfstream(orig_path);
        if (!ex_ifs) {
                return ex_ifs.error();
        }
        auto ex_ofs = io::OpenOfstream(new_path);
        if (!ex_ofs) {
                return ex_ofs.error();
        }
        auto &ifs = ex_ifs.value();
        auto &ofs = ex_ofs.value();

        string last_known_tstamp = first_tstamp;
        const string tstamp_prefix_data = R"d({"timestamp": ")d";
        const string corrupt_msg_suffix_data =
                R"d(", "level": "ERROR", "message": "(CORRUPTED LOG DATA)"},)d";

        string line;
        first_tstamp.erase();
        all_valid = true;
        error::Error err;
        while (!ifs.eof()) {
                getline(ifs, line);
                if (!ifs.eof() && !ifs) {
                        int io_errno = errno;
                        return error::Error(
                                generic_category().default_error_condition(io_errno),
                                "Failed to get line from deployment logs file '" + orig_path
                                        + "': " + strerror(io_errno));
                }
                if (line.empty()) {
                        // skip empty lines
                        continue;
                }
                auto ex_json = json::Load(line);
                if (ex_json) {
                        // valid JSON log line, just replace the newline after it with a comma and save the
                        // timestamp for later
                        auto ex_tstamp = ex_json.value().Get("timestamp").and_then(json::ToString);
                        if (ex_tstamp) {
                                if (first_tstamp.empty()) {
                                        first_tstamp = ex_tstamp.value();
                                }
                                last_known_tstamp = std::move(ex_tstamp.value());
                        }
                        line.append(1, ',');
                        err = io::WriteStringIntoOfstream(ofs, line);
                        if (err != error::NoError) {
                                return err.WithContext("Failed to write pre-processed deployment logs data");
                        }
                } else {
                        all_valid = false;
                        if (first_tstamp.empty()) {
                                // If we still don't have the first valid tstamp, we need to
                                // save the last known one (potentially pre-set) as the first
                                // one.
                                first_tstamp = last_known_tstamp;
                        }
                        err = io::WriteStringIntoOfstream(
                                ofs, tstamp_prefix_data + last_known_tstamp + corrupt_msg_suffix_data);
                        if (err != error::NoError) {
                                return err.WithContext("Failed to write pre-processed deployment logs data");
                        }
                }
        }
        return error::NoError;
}

static void ReplaceTimestampInMsgData(
        vector<uint8_t> &msg_data, string &timestamp, size_t default_tstamp_size) {
        auto msg_data_tstamp_start = msg_data.begin() + 15; // len(R"({"timestamp": ")")

        // The actual timestamp from logs can potentially have a different
        // (likely lower) time resolution and thus length than our default.
        const auto timestamp_size = timestamp.size();
        if (timestamp_size > default_tstamp_size) {
                // In case the time resolution is higher and the timestamp
                // longer (unlikely to happen)
                if (timestamp[timestamp_size - 1] == 'Z') {
                        timestamp[default_tstamp_size - 1] = 'Z';
                }
                timestamp.resize(default_tstamp_size);
        }
        copy_n(timestamp.cbegin(), timestamp.size(), msg_data_tstamp_start);
        if (timestamp.size() < default_tstamp_size) {
                // Add a closing '"' right after the timestamp and fill in the
                // rest of the space in the template with spaces that have no
                // effect in JSON.
                msg_data_tstamp_start[timestamp.size()] = '"';
                for (auto it = msg_data_tstamp_start + timestamp.size() + 1;
                         it < msg_data_tstamp_start + default_tstamp_size + 1;
                         it++) {
                        *it = ' ';
                }
        }
}

error::Error JsonLogMessagesReader::SanitizeLogs() {
        if (!sanitized_fpath_.empty()) {
                return error::NoError;
        }

        string prep_fpath = log_fpath_ + ".sanitized";
        string first_tstamp = default_tstamp_;
        auto err = DoSanitizeLogs(log_fpath_, prep_fpath, clean_logs_, first_tstamp);
        if (err != error::NoError) {
                if (path::FileExists(prep_fpath)) {
                        auto del_err = path::FileDelete(prep_fpath);
                        if (del_err != error::NoError) {
                                log::Error("Failed to delete auxiliary logs file: " + del_err.String());
                        }
                }
        } else {
                sanitized_fpath_ = std::move(prep_fpath);
                reader_ = make_unique<io::FileReader>(sanitized_fpath_);
                auto ex_sz = GetLogFileDataSize(sanitized_fpath_);
                if (!ex_sz) {
                        return ex_sz.error().WithContext("Failed to determine deployment logs size");
                }

                raw_data_size_ = ex_sz.value();
                if (raw_data_size_ > maximum_log_size_) {
                        large_logs_ = true;
                        // Make sure we end up with less data than the limit with all the
                        // potential extra messages added in JsonLogMessagesReader::Read()
                        // below.
                        auto ex_off = FindNextMsgAfter(
                                sanitized_fpath_,
                                (raw_data_size_ + too_much_data_msg_tmpl_.size() + bad_data_msg_tmpl_.size()
                                 - maximum_log_size_));
                        if (!ex_off) {
                                return ex_off.error().WithContext(
                                        "Failed to determine start offset in too large deployment logs");
                        }
                        reader_ = make_unique<io::FileReader>(sanitized_fpath_, ex_off.value());
                        raw_data_size_ -= ex_off.value();
                }
                rem_raw_data_size_ = raw_data_size_;
                if (!clean_logs_) {
                        ReplaceTimestampInMsgData(bad_data_msg_, first_tstamp, default_tstamp_.size());
                }
                if (large_logs_) {
                        ReplaceTimestampInMsgData(too_much_data_msg_, first_tstamp, default_tstamp_.size());
                }
        }
        return err;
}

error::Error JsonLogMessagesReader::Rewind() {
        AssertOrReturnError(!sanitized_fpath_.empty());
        header_rem_ = header_.size();
        closing_rem_ = closing_.size();
        bad_data_msg_rem_ = bad_data_msg_.size();
        too_much_data_msg_rem_ = too_much_data_msg_.size();

        // release/close the file first so that the FileDelete() below can actually
        // delete it and free space up
        reader_.reset();
        auto del_err = path::FileDelete(sanitized_fpath_);
        if (del_err != error::NoError) {
                log::Error("Failed to delete auxiliary logs file: " + del_err.String());
        }
        sanitized_fpath_.erase();
        return SanitizeLogs();
}

int64_t JsonLogMessagesReader::TotalDataSize() {
        assert(!sanitized_fpath_.empty());

        auto ret = raw_data_size_ + header_.size() + closing_.size();
        if (!clean_logs_) {
                ret += bad_data_msg_.size();
        }
        if (large_logs_) {
                ret += too_much_data_msg_.size();
        }
        return ret;
}

ExpectedSize JsonLogMessagesReader::Read(
        vector<uint8_t>::iterator start, vector<uint8_t>::iterator end) {
        AssertOrReturnUnexpected(!sanitized_fpath_.empty());

        if (header_rem_ > 0) {
                io::Vsize target_size = end - start;
                auto copy_end = copy_n(
                        header_.begin() + (header_.size() - header_rem_), min(header_rem_, target_size), start);
                auto n_copied = copy_end - start;
                header_rem_ -= n_copied;
                return static_cast<size_t>(n_copied);
        } else if (large_logs_ && (too_much_data_msg_rem_ > 0)) {
                io::Vsize target_size = end - start;
                auto copy_end = copy_n(
                        too_much_data_msg_.begin() + (too_much_data_msg_.size() - too_much_data_msg_rem_),
                        min(too_much_data_msg_rem_, target_size),
                        start);
                auto n_copied = copy_end - start;
                too_much_data_msg_rem_ -= n_copied;
                return static_cast<size_t>(n_copied);
        } else if (!clean_logs_ && (bad_data_msg_rem_ > 0)) {
                io::Vsize target_size = end - start;
                auto copy_end = copy_n(
                        bad_data_msg_.begin() + (bad_data_msg_.size() - bad_data_msg_rem_),
                        min(bad_data_msg_rem_, target_size),
                        start);
                auto n_copied = copy_end - start;
                bad_data_msg_rem_ -= n_copied;
                return static_cast<size_t>(n_copied);
        } else if (rem_raw_data_size_ > 0) {
                if (end - start > rem_raw_data_size_) {
                        end = start + static_cast<size_t>(rem_raw_data_size_);
                }
                auto ex_sz = reader_->Read(start, end);
                if (!ex_sz) {
                        return ex_sz;
                }
                auto n_read = ex_sz.value();
                rem_raw_data_size_ -= n_read;

                // We control how much we read from the file so we should never read
                // 0 bytes (meaning EOF reached). If we do, it means the file is
                // smaller than what we were told.
                assert(n_read > 0);
                if (n_read == 0) {
                        return expected::unexpected(
                                MakeError(InvalidDataError, "Unexpected EOF when reading logs file"));
                }
                return n_read;
        } else if (closing_rem_ > 0) {
                io::Vsize target_size = end - start;
                auto copy_end = copy_n(
                        closing_.begin() + (closing_.size() - closing_rem_),
                        min(closing_rem_, target_size),
                        start);
                auto n_copied = copy_end - start;
                closing_rem_ -= n_copied;
                return static_cast<size_t>(copy_end - start);
        } else {
                return 0;
        }
};

static const string logs_uri_suffix = "/log";

error::Error DeploymentClient::PushLogs(
        const string &deployment_id,
        const string &log_file_path,
        api::Client &client,
        LogsAPIResponseHandler api_handler) {
        auto logs_reader = make_shared<JsonLogMessagesReader>(log_file_path);
        auto err = logs_reader->SanitizeLogs();
        if (err != error::NoError) {
                return err;
        }

        auto req = make_shared<api::APIRequest>();
        req->SetPath(http::JoinUrl(deployments_uri_prefix, deployment_id, logs_uri_suffix));
        req->SetMethod(http::Method::PUT);
        req->SetHeader("Content-Type", "application/json");
        req->SetHeader("Content-Length", to_string(logs_reader->TotalDataSize()));
        req->SetHeader("Accept", "application/json");
        req->SetBodyGenerator([logs_reader]() {
                logs_reader->Rewind();
                return logs_reader;
        });

        auto received_body = make_shared<vector<uint8_t>>();
        return client.AsyncCall(
                req,
                [received_body, api_handler](http::ExpectedIncomingResponsePtr exp_resp) {
                        if (!exp_resp) {
                                log::Error("Request to push logs data failed: " + exp_resp.error().message);
                                api_handler(exp_resp.error());
                                return;
                        }

                        auto body_writer = make_shared<io::ByteWriter>(received_body);
                        auto resp = exp_resp.value();
                        auto content_length = resp->GetHeader("Content-Length");
                        if (!content_length) {
                                log::Debug(
                                        "Failed to get content length from the deployment log API response headers: "
                                        + content_length.error().String());
                                body_writer->SetUnlimited(true);
                        } else {
                                auto ex_len = common::StringTo<size_t>(content_length.value());
                                if (!ex_len) {
                                        log::Error(
                                                "Failed to convert the content length from the deployment log API response headers to an integer: "
                                                + ex_len.error().String());
                                        body_writer->SetUnlimited(true);
                                } else {
                                        received_body->resize(ex_len.value());
                                }
                        }
                        resp->SetBodyWriter(body_writer);
                },
                [received_body, api_handler](http::ExpectedIncomingResponsePtr exp_resp) {
                        if (!exp_resp) {
                                log::Error("Request to push logs data failed: " + exp_resp.error().message);
                                api_handler(exp_resp.error());
                                return;
                        }

                        auto resp = exp_resp.value();
                        auto status = resp->GetStatusCode();

                        if (status == http::StatusNoContent) {
                                api_handler(error::NoError);
                        } else if (status == http::StatusRequestBodyTooLarge) {
                                // Don't retry if the request body is too large
                                api_handler(MakeError(
                                        RequestBodyTooLargeError,
                                        "Could not send logs to server: request body too large"));
                        } else {
                                auto ex_err_msg = api::ErrorMsgFromErrorResponse(*received_body);
                                string err_str;
                                if (ex_err_msg) {
                                        err_str = ex_err_msg.value();
                                } else {
                                        err_str = resp->GetStatusMessage();
                                }
                                api_handler(MakeError(
                                        BadResponseError,
                                        "Got unexpected response " + to_string(status) + " from logs API: " + err_str));
                        }
                });
}
} // namespace deployments
} // namespace update
} // namespace mender

mendersoftware / mender / 2434577541

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